Secondary Glaucoma Research Articles

Visual outcome of cataract surgery in paediatric uveitis

1. To analyse the visual outcome in patients of paediatric uveitis who underwent cataract surgery; 2. To analyse the post-operative complications of cataract surgery in paediatric uveitis.Retrospective observational study was done on patients of uveitis who underwent cataract surgery. Patients who were under 18 years and co-operative for examination were included.They underwent Phacoaspiration with posterior chamber IOL implantation by a single surgeon after 3 months of activity free interval, BCVA(in Log MAR) in every follow up, anterior segment examination using slit lamp and posterior segment examination using IDO, post-operative complications and Intra ocular pressure was recorded using Noncontact tonometer.Uveitis was classified using the SUN classification of uveitis. Use of corticosteroids, biologics and immunosuppressive drug were collected at each visit. Total of 18 subjects diagnosed with cataract as a complication of uveitis & undergone cataract surgery were studied (6 were females, 12 were males) 9 had anterior uveitis, 1had intermediate uveitis and 5 had pan uveitis. JRA (66.7%) was the most common cause identified. Improvement in vision from baseline was observed post-surgery at the end of first, third and 6th month which was statistically significant (P- Value <0.05). Average duration of disease before they underwent surgery was 18 months. Most common post op complication was posterior capsular opacification (50 %), others include secondary glaucoma (38.9), exudative retinal detachment (5.6%) and Vitritis (22.2%)Unlike adult uveitic patients, the surgical management of paediatric uveitic cataract is both challenging and controversial, and the surgery itself has been associated with poor visual outcomes. However, our study had shown that with implantation of IOL, good immunosuppressants and control of the disease can give these children a good visual outcome.

Clinical study on the efficacy and safety of glaucoma drainage implants in the treatment of different types of glaucoma

Objective: To evaluate the efficacy and safety of glaucoma drainage implants(XEN-45 Gel Stent) for glaucoma treatment. Methods: A prospective study was conducted to continuously collect the clinical data of patients who were diagnosed with glaucoma and underwent XEN-45 Gel Stent implantation in the Ophthalmology Department of Peking University People's Hospital from January 2022 to August 2023. The visual acuity, intraocular pressure, number of glaucoma medications, and success rate of the patients were analyzed before and after surgery at 1 day, 1 week, 1 month, 3 months, 6 months, 12 months, and 18 months. The differences in intraocular pressure and number of glaucoma medications among primary open-angle glaucoma, primary angle closure glaucoma, secondary glaucoma, and different implantation methods of XEN-45 Gel Stent among patients with primary open-angle glaucoma were compared. The intraoperative and postoperative complications were observed, and the risk factors for needling and surgical complete success were analyzed. Results: A total of 48 eyes from 48 patients were included in this study, comprising 27 males and 21 females, with a mean age of (54.4±18.0) years and the disease duration was 36.0(7.3, 81.0) months.There were 28 cases of primary open-angle glaucoma, 4 cases of primary angle closure glaucoma, and 16 cases of secondary glaucoma.The follow-up period was 8.0 (3.0, 12.0) months. At 12 months after surgery, the intraocular pressure decreased from 20.5 (17.0, 26.0) mmHg to (13.5±3.3) mmHg (P<0.05), and the number of glaucoma medications decreased from 3.0 (3.0, 4.0) to 0.0 (0.0, 0.0) (P<0.05). The complete success rate and qualified success rate were 73.9% (17/23) and 91.3% (21/23), respectively. The most common postoperative complications were shallow anterior chamber in 6 cases (12.5%), hypotony in 3 cases (6.3%), and blocked stent in 3 cases (6.3%). The most common postoperative treatment was needling in 27 cases (56.3%). There was no significant difference in intraocular pressure among different types of glaucoma. In the comparison of postoperative effects of different surgical implantation methods for primary open-angle glaucoma, there were no statistically significant differences in intraocular pressure and the number of glaucoma medications at other follow-up time points except 1 month after surgery (P<0.05). Univariate logistic regression analysis did not find any risk factors associated with needling and surgical complete success. Conclusions: XEN-45 Gel Stent implantation is an effective and safe surgical option for different types of glaucoma patients in China, which can significantly reduce intraocular pressure and the use of glaucoma medications and has a high success rate. However, some patients may need needling or other treatments after surgery.

Clinical value of cognitive behavioral nursing model to patients with congenital glaucoma.

There have been studies on the use of cognitive behavioral nursing intervention (CBNI) but the main subjects were patients with secondary glaucoma and there are fewer studies on the care of congenital glaucoma. To explore the clinical value of cognitive behavioral nursing model in patients with congenital glaucoma. One hundred and fifty-three postoperative patients with congenital glaucoma treated in our hospital between January 2021 and December 2022 were prospectively selected for the study and randomly divided into a control group (n= 77) and an observation group (n= 76). The control group was given routine nursing, and the observation group was given cognitive behavioral nursing mode on the basis of the control group. Anxiety self-assessment scale (SAS), depression self-assessment scale (SDS), Connor-Davidson toughness scale, and treatment adherence evaluation scale were used to evaluate the psychological state, mental toughness, treatment adherence, treatment effect and nursing care satisfaction in the two groups before and after 2 weeks of intervention. The efficacy of the treatment was also assessed by determining the visual acuity (VA), intraocular pressure (IOP), and mean defective (MD) value of the visual field of the two groups of patients. After nursing, the SDS score (46.33 ± 6.16 versus 53.21 ± 5.94) and SAS score (44.41 ± 5.6 versus 52.82 ± 6.31) in the observation group were lower than those in the control group (P< 0.05). The scores of optimism (11.55 ± 1.90 versus 8.20 ± 1.95), self-improvement (22.05 ± 3.60 versus 17.60 ± 4.30), tenacity (37.45 ± 3.10 versus 28.90 ± 4.55) and total score (71.35 ± 8.00 versus 56.85 ± 8.50) in the observation group were higher than those in the control group (P< 0.05). After care, the VA of the observation group (0.95 ± 0.22) was greater than that of the control group (0.84 ± 0.16), and the IOP (14.25 ± 0.58 versus 15.89 ± 0.67) and the MD (5.42 ± 0.46 versus 6.68 ± 0.49) of the observation group were less than that of the control group. The difference between the two groups was statistically significant (P< 0.05). The compliance (96.05% versus 85.71%) and nursing satisfaction (96.10% versus 85.71%) of the observation group were higher than those of the control group (P< 0.05). Cognitive-behavioural nursing care for glaucoma patients can improve patients' mental toughness, improve visual acuity, reduce intraocular pressure and mean visual field defect values, and have a positive effect on enhancing patients' treatment adherence and nursing satisfaction.

Glaucoma (Eye Disease) and its Associated Diagnosis and Treatment Process: A Schematic Concise Review

A class of eye conditions known as glaucoma can result in blindness and visual loss by harming the optic nerve, a nerve located at the back of the eye. You might not notice the symptoms at first because they can appear so slowly. A thorough dilated eye exam is the only way to determine if you have glaucoma. While there is no known cure for glaucoma, vision protection and damage can frequently be stopped with early intervention. Primary open-angle and angle-closure glaucoma, as well as secondary open and angle-closure glaucoma, are the four main types of adult glaucoma. Prescription eye drops are the most popular form of treatment for glaucoma. They function by reducing intraocular pressure and shielding your optic nerve from harm. Although these eye drops cannot reverse vision loss or treat glaucoma, they can prevent glaucoma from worsening. Prostaglandins are one type of prescription eye drop medication. By increasing the fluid's outflow from your eye, they aid in lowering intraocular pressure. Latanoprost (Xalatan), Travoprost (Travatan Z), Tafluprost (Zioptan), Bimatoprost (Lumigan), and Latanoprostene bunod (Vyzulta) are among the medications in this category. Alpha-adrenergic agonists, such as brimonidine (Altagan P) or Qoliana (Iopidine, apraclonidine) Beta-blockers such as Betimol, Istalol, Timoptic (timolol), and Betoptic (betaxolol) Inhibitors of carbonic anhydrases, such as Azopt (brinzolamide) and Trusopt (dorzolamide). In this review study, we discuss the aetiology, epidemiology, current management, and pathophysiology of glaucoma.

Mechanism and treatment of secondary glaucoma after corneal transplantation: a review.

Corneal transplantation is a common treatment for corneal diseases. Secondary glaucoma after corneal transplantation is the second leading cause of failure of keratoplasty. This article reviews the mechanism and treatment of secondary glaucoma after corneal transplantation.

Increased late-onset glaucoma risk following vitrectomy for macular pucker or hole.

The long-term risk of developing glaucoma after vitrectomy remains uncertain. This retrospective population-based cohort study aimed to explore this risk following vitrectomy for macular pucker or hole. Utilizing Taiwan's National Health Insurance Research Database (NHIRD), we included patients who were older than 18 years and had undergone vitrectomy surgery between 2011 and 2019. Exclusions were made for patients with prior diagnoses of glaucoma, congenital or secondary glaucoma, as well as those who had received previous vitreoretinal treatments or had undergone multiple vitrectomies. After an average follow-up period of 51 and 53 months respectively for the vitrectomized and non-vitrectomized group, our results showed a relative risk of 1.71 for glaucoma development in the vitrectomized group. Higher adjusted hazard ratios were also observed for open-angle glaucoma and normal tension glaucoma. Increased risks were associated with male sex, obstructive sleep apnoea, and migraine. In the subgroup analysis, phakic eyes at baseline and those who had undergone cataract surgery post-vitrectomy were associated with a lower risk of glaucoma development during follow-up. Among all glaucoma events, pseudophakic status at baseline had the shortest interval to glaucoma development following vitrectomy. These findings underscore the potential relationship between vitrectomy and glaucoma onset, emphasizing the need for vigilant monitoring and early detection of glaucoma in post-vitrectomy patients.

Современные алгоритмы терапии диабетического макулярного отека (Обзор литературы. Часть II)

This review presents up-to-date information on officially approved intravitreal angiogenesis inhibitors, provides the comparative analysis of the data obtained during large-scale randomized trials on their efficacy and safety as well as possible schemes of their administration. Special attention is paid to the problem of refractory diabetic macular edema and alternative therapies, including the use of glucocorticoids, inhibition of Rho/ROCK signaling pathway. The dynamics of the central foveal thickness according to optical coherence tomography and best-corrected visual acuity are the main criteria for evaluating the diabetic macular edema therapy effectiveness. According to current data, intravitreal injection of angiogenesis inhibitors is a first-line treatment. In diabetic macular edema, the following drugs have been registered in Russia: ranibizumab, aflibercept, brolucizumab, faricimab. Laser retinal photocoagulation is used mainly for the non-central edema treatment. Intravitreal glucocorticoids are considered as an alternative therapy, but their use is limited by the presence of side effects in the form of secondary drug-induced ophthalmic hypertension and/or glaucoma and the development of cataracts. However, the suboptimal response to standard treatment and the development of refractory forms stimulate the development of novel drugs and delivery systems, as well as the use of several types of therapy that affect different points of the pathogenesis. The review emphasizes the need to further study the trigger points of the diabetic retinopathy pathogenesis and the development of diabetic macular edema in order to find novel drugs and individualize the treatment of each patient. Key words:diabetic retinopathy, diabetic macular edema, vascular endothelial growth factor, VEGF-therapy

Clinical characteristics of viral-associated Fuchs uveitis syndrome and Posner-Schlossman syndrome in a Chinese population.

To identify the types of viral infection in aqueous humor (AqH) among patients diagnosed as Fuchs uveitis syndrome (FUS) or Posner-Schlossman syndrome (PSS) and investigate their relevance to clinical manifestations and visual outcome. A total of 375 patients and 171 patients were diagnosed as FUS or PSS in our department. AqH and serum samples from 68 FUS patients and 16 PSS patients were obtained during eye surgery. The viral etiologies, clinical features, auxiliary tests and visual prognosis of patients with FUS or PSS who underwent AqH analysis were analysed and compared. Among 68 FUS patients, rubella virus (RV), cytomegalovirus (CMV), herpes simplex virus (HSV) and varicella-zoster virus were identified in 17, 11, 1 and 1 patients, respectively. Seven patients with CMV and 1 with HSV were identified in 16 PSS patients. In both FUS and PSS groups, virus-associated eyes had higher proportion of secondary glaucoma and worse visual prognosis as compared with non-virus-associated eyes (all P < 0.05). In FUS group, specifically, CMV infection manifested as more obvious anterior segment inflammation and lower corneal endothelial cell density (CECD). RV infection showed a higher percentage of vitritis. In PSS group, CMV-associated PSS had a lower retinal nerve fiber layer thickness and CECD, worse visual prognosis as compared with non-virus-associated PSS (all P < 0.05). Our study identified 4 types of viral infection in FUS and 2 types of viral infection in PSS. Virus-associated patients are usually associated with more obvious clinical signs and poor visual prognosis.

Extensive intraocular melanoma with secondary glaucoma in a 15-month-old Thoroughbred filly.

A 15-month-old, grey, Thoroughbred filly presented for investigation of a 6-week history of corneal oedema and blepharospasm on the right eye (OD). The filly was otherwise healthy. Following ophthalmic examination, glaucoma on the OD was diagnosed. A space occupying mass within the anterior chamber was documented on transpalpebral ultrasonographic examination. This mass obliterated most of the anterior intraocular structures on the peripheral nasal side (corneal endothelium and drainage angle), leading to secondary glaucoma. After systemic and topical treatment addressing secondary glaucoma, the corneal oedema reduced. The mass was visualised as an irregularly rounded brown structure associated with the iris on the peripheral nasal side of the anterior chamber. Given the filly's signalment, location and appearance of the mass, a tentative diagnosis of intraocular melanoma was made and enucleation was performed. Histopathological evaluation of the globe revealed solid sheets of heavily pigmented melanocytic cells, disrupting the normal ciliary body architecture and extending into the iris and subretinal. The cells were pleomorphic, polyhedral to round with occasional spindle-shaped cells, and contained moderate to large amounts of granular black-brown pigment (melanin). The iridal component expanded into the anterior chamber, with cells directly opposed to Descemet's membrane, with loss of the endothelium and expanding and occluding the filtration angle in this area. The lesion infiltrated locally into the edge of the sclera, but did not extend through the sclera, though occasional perivascular clusters of melanophages were observed within the scleral stroma adjacent to the optic nerve. Diagnosis of a uveal melanocytic neoplasm was confirmed, with characteristics similar to only one reported case . This is a unique case of a rapidly growing, invasive, uveal melanoma in a young horse. Intraocular melanoma should be considered as a differential diagnoses for glaucoma in grey horses, regardless of the age and absence of melanocytic skin lesions.

Long-term efficacy and safety of posterior endoscopic cyclophotocoagulation in refractory glaucoma: A 5-year follow-up study at a tertiary eye center

PurposeTo evaluate the long-term efficacy of endoscopic cyclophotocoagulation (ECP) via a pars plana approach in a large cohort of refractory glaucoma patients DesignSingle-center, retrospective, longitudinal, cohort study. MethodsThis study recruited patients who underwent ECP and consecutively visited and were followed up for at least 5 years at Beijing Tongren Eye Center, China from January 2013 to December 2017. All patients underwent a complete ophthalmic examination. Treatment success was defined as 6 mmHg ≤ IOP ≤ 21 mmHg with or without anti-glaucoma medications. ResultsA total of 121 eyes of 105 patients including 51 children and 54 adults were enrolled. The mean follow-up was 7.2 ± 1.3 years. The most common glaucoma diagnoses were secondary glaucoma (74 eyes, 61.1 %) and primary congenital glaucoma (19 eyes 15.7 %). The mean extent of the first ECP was 259 degrees. There was an overall decrease in IOP of 38.3 % from 33.3 ± 9.0 mmHg preoperatively to 20.5 ± 7.5 mmHg after surgery, which was statistically significant (P < 0.001). The success rate after 1 or more ECP surgery was 65.3 %. After adjusting for sex, number of prior TCP surgeries and the extent of ECP degree, the failure of ECP was associated with being children (as compared with adults; P = 0.028; OR = 2.549) and higher preoperative IOP (P = 0.001; OR = 1.084). ConclusionECP is an effective procedure for lowing IOP in refractory glaucoma, particularly in patients who are also candidates for vitreoretinal interventions. Hence, a collaborative approach between glaucoma and retinal specialists is of utmost importance in devising an optimal management strategy for glaucoma treatment.

Diabetes mellitus and glaucoma

Diabetes mellitus (DM) and glaucoma are two chronic disorders that independently affect the eye and are potential causes of vision impairment and blindness. DM, being a micro-vasculopathy and metabolic condition, affects the functioning of cells, including the retinal ganglion cells (RGC). The association between epidemiology of primary open-angle glaucoma is not well understood. The relationship between DM and secondary open-angle glaucoma is not thoroughly investigated. Neovascular glaucoma is an important complication of diabetic retinopathy, especially with proliferative type. DM also seems to influence the biomechanical properties of the cornea, and affect the measurement of intraocular pressure (IOP). Clinical control of DM has been related to the progression and surgical outcomes of glaucoma. IOP lowering drugs influence the blood glucose level; conversely, oral hypoglycemic agents and insulin affect IOP.

Neovascular glaucoma in diabetic retinopathy

Neovascular glaucoma (NVG) is sight threatening form of secondary glaucoma, characterised by development of new vessels over the iris and anterior chamber angle that can obstruct aqueous humour outflow and increase the intraocular pressure. The underlying pathogenesis is retinal ischemia of which Proliferative Diabetic Retinopathy (PDR) is the leading cause. Early diagnosis and aggressive treatment in time are crucial for halting the neovascularization drive and preserving vision. But even with aggressive treatment, NVG is refractory to routine management and is associated with poor visual prognosis. The review provides an overview of NVG secondary to diabetic retinopathy, including epidemiology, pathogenesis and management guidelines.

Surgical treatment of secondary glaucoma in comorbid pathology with subsequent penetrating keratoplasty (case study)

PURPOSE. To evaluate the effect of surgical treatment of secondary glaucoma with subsequent end-to-end keratoplasty in a patient with aphakia, operated retinal detachment and condition after intrastromal keratoplasty.METHODS. A patient with secondary refractory glaucoma against the background of aphakia, a biopolymer implant in the corneal stroma, an inflammatory reaction to multiple surgical interventions (formation of anterior synechiae), operated retinal detachment was examined in the S.N. Fedorov National Medical Research Center "MNTK "Eye Microsurgery" in Moscow. The following treatment was performed: implantation of Ahmed valve drainage and pene-trating keratoplasty with implant removal.RESULTS. On the second day after implantation of Ahmed valve drainage on the right eye, intraocular pressure was normal in palpatory examination, the drainage tube in the anterior chamber was in the correct position. Three months after the operation, there were no complaints, intraocular pressure was normal in palpatory examination, there was a decrease in corneal edema. Penetrating keratoplasty was performed four months after the implantation of Ahmed valve drainage. On the second day after the operation, hypotension was noted with palpatory measurement of intraocular pressure, which persisted for five days. At patient discharge, the graft was adapted, the sutures were consistent, normal pressure with palpatory examination. During the observation period of up to three months, visual acuity increased to 0.1.CONCLUSION. To prolong the hypotensive effect and minimize intra- and postoperative complications in order to achieve the highest possible visual functions before performing optical reconstructive surgery, it is advisable to perform an anti-glaucoma intervention. In secondary refractory glaucoma caused by various factors, the choice of surgical treatment is always individual and depends on the severity of anatomical changes, the experience and capabilities of the surgeon, and often requires multi-stage treatment with continuous observation.

Topographical features of the formation of outflow tracts with the use of spongy allo-drainages in glaucoma

PURPOSE. Improving the results of the operation and achieving its reliability in secondary glaucoma, including refractory glaucoma, can be done using a non-biodestructible allograft drainage with spongy structure fabricated by Alloplant® technology.METHODS. Experimental and morphological studies conducted in the Russian Eye and Plastic Surgery Center showed that the allogeneic spongy biomaterial used for anti-glaucoma sponge drainage surgery is gradually replaced by loose tissue with a porous structure, similar to trabecular, forming a new drainage system. During the operation, the proximal part of the drainage is inserted through the excised drainage zone in the anterior chamber angle (ACA). The distal part is tucked into the suprachoroidal space through a linear incision in the scleral bed.RESULTS. The newly created topography of the ACA after sponge drainage operation with the use of allogeneic biomaterial features not only the expansion of the ACA profile, but also the replacement of the excised part of the drainage zone with biomaterial after sinus trabeculectomy (STE) and elimination of retention of the intraocular fluid (IOF) outflow. Ultrasound biomicroscopy (UBM) performed at various times after antiglaucoma surgery showed that the microtubule system preserved. Optical coherence tomography (OCT) of the ACA demonstrates the location of the drainage in the long-term follow-up.CONCLUSION. Antiglaucoma operation with the use of allogeneic biomaterial with spongy structure promotes the formation of trabecula-like tissue in the ACA, eliminates retention of IOF outflow, and reduces the risk of scleroscleral and sclero-conjunctival adhesions.

Local resection via partial lamellar sclerouvectomy for ciliary body tumors — a case series

BackgroundCiliary body tumor is extremely rare and treatment is challenging. The aim of this study is to present our experience in treating this rare entity, especially large tumors with more than 5 clock hours of involvement, and to evaluate the surgical outcomes and complications of local resection via partial lamellar sclerouvectomy in four cases of ciliary body tumors in China.MethodsFour patients with ciliary body tumors underwent partial lamellar sclerouvectomy between October 2019 and April 2023 in Shanghai General Hospital, China. Tumor features, histopathologic findings, complications, visual acuity, and surgical outcomes were reviewed at a mean follow-up of 20.8 months.ResultsFour patients with a mean age of 31.8 years were included in this study. The histopathological diagnosis was adenoma of non-pigmented ciliary epithelium (ANPCE), schwannoma, and multiple ciliary body pigment epithelial cysts. The mean largest tumor base diameter was 6.00 mm (range: 2.00–10.00) and the mean tumor thickness was 3.50 mm (range: 2.00–5.00). Preoperative complications included cataract in 3 (75%) eyes, lens dislocation in 2 (50%), and secondary glaucoma in 1 (25%). Temporary ocular hypotonia was observed in one case and no other postoperative complications were observed. At a mean follow-up of 20.8 months, the best corrected visual acuity increased in 3 eyes and was stable in 1 eye. Tumor recurrence was absent in all eyes. All patients were alive at the end of follow-up.ConclusionsLocal tumor resection via PLSU is useful in the treatment of ciliary body tumors, including large tumors occupying more than five clock hours of pars plicata. Surgery-related complications were manageable with adequate preoperative assessment and careful operation during surgery.

Secondary Neovascular Glaucoma in the Course of Diabetes in a Kidney Transplant Recipient: Case Report and Review of the Literature

The increase in intraocular pressure during hemodialysis challenges nephrologists and ophthalmologists. It most often affects patients with previously diagnosed glaucoma and is particularly dangerous in the setting of diabetic retinopathy. Hypoperfusion and hypoxia of the retina may occur, leading to pathologic neovascularization in the retina and the anterior chamber angle. Changes in the filtration angle block the outflow of aqueous humor and cause secondary glaucoma. A special type of glaucoma is neovascular glaucoma, developing among others in patients with diabetic retinopathy. This study describes a patient with secondary neovascular glaucoma in whom a significant increase in intraocular pressure was observed during hemodialysis, not responding to the applied topical treatment. The patient experienced severe pain, and her cornea was constantly injured by paracentesis. Ultimately, secondary glaucoma led to a significant decrease in vision in both eyes. The patient was enrolled on a transplant waiting list and transplanted with priority. The patient experienced some urologic and infectious complications, although 7 months after transplantation, her creatinine concentration was 1.2 mg/dL, and the ocular disease was stabilized. The intraocular pressure decreased, but there were still values above the norm, which required periodic injections of anti-vascular endothelial growth factor into the vitreous chamber and 5-fluorouracil injections under the conjunctiva. Patients with diabetes and secondary neovascular glaucoma on dialysis constitute an extremely difficult therapeutic problem and require the involvement of several specialists. Successful kidney transplantation, besides ameliorating general clinical conditions, may increase the chance of successful ophthalmologic treatment.

Management of macula-on giant retinal tear detachments– outcome of pars-plana-vitrectomy with silicone oil versus gas tamponade

BackgroundTo compare the outcome of eyes with a macula-on giant retinal tear (GRT) detachment treated with pars-plana-vitrectomy (PPV) depending on the used endotamponade.MethodsAll consecutive cases with a macula-on GRT-associated rhegmatogenous retinal detachment (RRD) managed with PPV between 2007 and 2022 were retrospectively assessed depending on the selected endotamponade. By reviewing medical charts and surgical protocols the pre- and intraoperative parameters were analysed in detail. The number of vitreoretinal (VR) procedures needed for reattachment, the redetachment rate and the functional outcome were evaluated. Eyes treated with primary silicone oil (SO) tamponade were compared to eyes with primary gas tamponade. Cases with pre-existing conditions affecting outcome e.g. macula-off situation, history of trauma, status after complicated cataract surgery, former VR surgery or proliferative vitreoretinopathy grade C or higher were excluded.ResultsOverall, 51 eyes of 45 patients with a macula-on GRT detachment were treated with PPV and SO (n = 32; 63%) or gas (n = 19; 37%) endotamponade in the observed period. Eyes with primary SO tamponade underwent on average 2.3 (SD 0.8) VR procedures and had a redetachment rate of 13% (n = 4). Eyes with gas tamponade showed a higher redetachment rate of 32% (n = 6) with a mean number of 1.6 (SD 1.0) PPV procedures. Postoperative best-corrected visual acuity (BCVA) was significantly better in eyes with primary gas tamponade (mean logMAR BCVA 0.32; SD 0.30) compared to eyes with SO (mean logMAR BCVA 0.60; SD 0.42; p = 0.008).ConclusionsSurgical management of GRT-associated RRDs is complex. In clinical routine often SO is used as endotamponade. Because of known disadvantages (second procedure necessary for SO removal, unexplained SO-related visual loss, secondary glaucoma, SO emulsification) some VR surgeons prefer a gas tamponade. In our cohort, eyes with a gas compared to SO tamponade showed higher redetachment rates. However, the final postoperative BCVA was significantly better in eyes with gas compared to SO tamponade.Trial registrationThe trial protocol was approved by the local ethics committee on 25th of November 2022 (Ethikkommission der Universität Regensburg, Votum 22-3166-104).

Challenges of Secondary Glaucoma Management Following Congenital Cataract Surgery, Penetrating Keratoplasty and Vitreoretinal Surgery.

Glaucoma is one of the world's leading causes of irreversible vision loss. It is often asymptomatic until it reaches an advanced stage, which can have a significant impact on patients' daily lives. This paper describes the case of a 50-year-old female patient who presented with acute onset of ocular pain, photophobia, and loss of visual acuity in her right eye (RE). The patient's medical history includes congenital cataracts, surgical aphakia, nystagmus, strabismus, amblyopia, and secondary glaucoma. Ophthalmological examination showed BCVA RE-hand movement, left eye (LE)-0.08 with an intraocular pressure (IOP) of 30 mmHg in RE and 16 mmHg in LE. Biomicroscopic examination of RE showed corneal graft, epithelial and endothelial edema, endothelial precipitates, corneal neovascularization, aphakia, and Ahmed valve superotemporally. Despite maximal topical and systemic treatment, Ahmed valve, and trabeculectomy, secondary glaucoma in the right eye remained refractory. Reimplantation of an Ahmed valve was performed. This resulted in a favorable outcome with increased visual acuity and controlled intraocular pressure. The combination of aphakia, penetrating keratoplasty, and secondary glaucoma is a challenge for any surgeon. It is important that both the perioperative risks and the possible complications are carefully assessed in each patient, especially if associated pathology is present.

Proteomic characteristics of the aqueous humor in Uyghur patients with pseudoexfoliation syndrome and pseudoexfoliative glaucoma

Pseudoexfoliation syndrome (PEX) is characterized by the deposition of fibrous pseudoexfoliation material (PEXM) in the eye, and secondary glaucoma associated with this syndrome has a faster and more severe clinical course. The incidence of PEX and pseudoexfoliative glaucoma (PEXG) exhibits ethnic clustering; however, few proteomic studies related to PEX and PEXG have been conducted in Asian populations. Therefore, we aimed to conduct proteomic analysis on the aqueous humor (AH) obtained from Uyghur patients with cataracts, those with PEX and cataracts, and those with PEXG and cataracts to better understand the molecular mechanisms of the disease and identify its potential biomarkers. To this end, AH was collected from patients with cataracts (n = 10, control group), PEX with cataracts (n = 10, PEX group), and PEXG with cataracts (n = 10, PEXG group) during phacoemulsification. Label-free quantitative proteomic techniques combined with bioinformatics were used to identify and analyze differentially expressed proteins (DEPs) in the AH of PEX and PEXG groups. Then, independent AH samples (n = 12, each group) were collected to validate DEPs by enzyme-linked immunosorbent assay (ELISA). The PEX group exhibited 25 DEPs, while the PEXG group showed 44 DEPs, both compared to the control group. Subsequently, we found three newly identified proteins in both PEX and PEXG groups, wherein FRAS1-related extracellular matrix protein 2 (FREM2) and osteoclast-associated receptor (OSCAR) exhibited downregulation, whereas coagulation Factor IX (F9) displayed upregulation. Bioinformatics analysis suggested that extracellular matrix interactions, abnormal blood-derived proteins, and lysosomes were mainly involved in the process of PEX and PEXG, and the PPI network further revealed F9 may serve as a potential biomarker for both PEX and PEXG. In conclusion, this study provides new information for understanding the proteomics of AH in PEX and PEXG.

Outcomes after giant peripheral retinotomy and anterior flap retinectomy for rhegmatogenous retinal detachments with advanced proliferative vitreoretinopathy using small gauge vitrectomy.

To analyze the visual and anatomical outcomes for eyes with rhegmatogenous retinal detachment (RRD) and advanced proliferative vitreoretinopathy (PVR) undergoing giant peripheral retinotomy (GPR) using 25-gauge pars plana vitrectomy (PPV). In this retrospective multi-center study, patients with RRD with either anteroposterior or circumferential retinal shortening and advanced PVR requiring more than 90-degree GPR with/without relaxing retinotomy were included. Subjects of either gender, any age group, and with complete surgical notes were included. Outcome measures of the study included anatomical success (i.e. complete retinal re-attachment) at 6 months using survival analysis, visual outcomes, and post-operative complications. Forty-one eyes of 41 patients (33 males) with a mean age of 44.9 ± 21.4 years were included. At 6 months follow-up, anatomical success was seen in 29 eyes (70.7%) with a cumulative re-attachment rate of 66% (95% confidence interval = 48 = 79%). All re-detachments occurred at ≤6 months with a peak at 4-6 months (n = 9). Twenty-three eyes (56%) achieved ambulatory vision (5/200) or better. Direct perfluorocarbon liquid-silicone oil exchange was performed in 20 eyes. Intra-operative complications included persistent retinal folds (2 eyes), subretinal air (1 eye), and subretinal bleed (1 eye). Eleven eyes (26.8%) developed secondary glaucoma (2 eyes required a drainage device), and hypotony of ≤6 mmHg was noted in 3 eyes (7.3%). Corneal decompensation was noted in 8 eyes (19.5%), and 3 eyes (7.3%) underwent re-surgery for re-RRD. After GPR using small gauge PPV, two-thirds achieve anatomical success, and over half have ambulatory vision, but overall post-operative complications can occur in more than half of the eyes.