Central Corneal Opacity Research Articles

Cross-cultural adaptation of the 5-Question Stigma Indicators in trachoma-affected communities, Ethiopia.

Stigma is common in people affected with Neglected Tropical Diseases (NTDs). However, no validated tools are available to assess and monitor stigma in trachoma-affected communities. We tested the cross-cultural equivalence of the 5-question stigma indicator-affected persons (5-QSI-AP) scale in persons with trachomatous trichiasis (TT), the blinding stage of trachoma, and the 5-question stigma indicator-community stigma (5-QSI-CS) scale in person without TT, in Amhara region, Ethiopia. Conceptual, item, semantic, and operational equivalence were assessed through exploratory qualitative methods; measurement equivalence was assessed quantitatively through internal consistency, construct validity, and reproducibility. A total of 390 people participated: 181 were persons with TT, 182 persons without TT, 19 mental health, trachoma, social science, and linguistics experts, and eight interviewers. Items included in both scales were adequately relevant and important to explore stigma in the target culture. Concern about others knowing that they have TT, shame, avoidance by others, and problems getting married or in their marriage were among the issues persons with TT faced in this study community. The 5-QSI-AP had a Cronbach's α of 0.57 for internal consistency and showed adequate discriminant validity where persons with central corneal opacity from TT had higher mean stigma scores than their counterparts. The 5-QSI-CS had a Cronbach's α of 0.70 for internal consistency and a correlation of r = 0.23 with the Social Distance Scale (SDS) for convergent validity. The test-retest reliability analysis between the initial and repeat measures produced an intraclass correlation coefficient of 0.60 and 0.53 for the 5-QSI-AP and 5-QSI-CS respectively, and no evidence of systematic bias in mean stigma scores. The 5-QSI scales have satisfactory cultural validity to assess and monitor stigma in this trachoma-affected Amharic-speaking study population. With further cross-cultural validation, these brief and easy to administer scales would offer the possibility to rapidly measure and monitor stigma associated with NTDs.

Autologous Contralateral and Ipsilateral Rotational Penetrating Keratoplasty - A Case Series and Mini-Review.

Corneal stromal opacities can severely impact visual acuity if they are located in the visual axis. Homologous penetrating keratoplasty (HPK) is usually the preferred surgical option in such clinical circumstances. However, autologous penetrating keratoplasty (APK) could be an immunologically safer alternative. The purpose of this study was to report the surgical technique, indications, and (dis)advantages of ipsilateral rotational and contralateral APK, as well as pre- and postoperative clinical findings of four patients who underwent contralateral APK. In ipsilateral rotational APK, eccentric trephination places the central corneal opacity at the excision edge, whereafter the corneal button is rotated to clear the visual axis. Contralateral APK is suitable for more specific clinical situations with corneal opacity in a functionally much better eye. Clear cornea of the (almost) blind eye suffering from a noncorneal pathology is transplanted to the potentially better seeing eye suffering from a corneal pathology, followed by HPK in the (almost) blind donor eye. After 18 months, potentially better-seeing eyes improved from logMAR 1.3 to 0.6 in visual acuity, with most HPK-treated weaker eyes matching preoperative levels. Considering ipsilateral rotational and contralateral APK before moving on straight towards HPK is crucial in select cases. Autologous contralateral keratoplasty should be preferred for patients with (1) corneal scars in a potentially better seeing eye and (2) a clear cornea in an (almost) blind eye, especially in cases of high risk for graft rejection.

Clinical Features and Visual Outcome of Infectious Keratitis Associated with Orthokeratology Lens in Korean Pediatric Patients.

To investigate the clinical features and visual outcome of infectious keratitis associated with orthokeratology (Ortho-K) lens in Korean pediatric patients. We retrospectively reviewed medical records of patients diagnosed with Ortho-K lens-related infectious keratitis from June 2005 to April 2020 at a tertiary referral hospital. Patients' demographics, clinical features, microbiological evaluation, and treatment methods were assessed, and factors related to final visual outcomes were analyzed. The study included 26 eyes from 26 patients (19 female and 7 male patients; mean age, 11.9 years), with an average Ortho-K lens wear duration of 33.7 ± 21.2 months. The highest number of cases occurred in summer (11 of 26 cases, 42.3%). Central or paracentral corneal lesions were observed in 25 cases (96.2%), with a mean corneal epithelial defect size of 5.13 mm2. Pseudomonas aeruginosa was the most commonly isolated organism (n = 5), followed by Serratia marcescens (n = 4). All patients responded to medical treatment without needing surgical intervention. 72% of cases achieved favorable visual outcomes (Snellen best-corrected visual acuity [BCVA] >6 / 12), while 8% experienced severe visual impairment (Snellen BCVA ≤6 / 60) due to residual central corneal opacities. Multivariable analysis showed that non-summer seasons (p = 0.043), duration from symptom onset to presentation (p = 0.040), and corneal epithelial defect size (p = 0.002) were significantly associated with final logarithm of the minimum angle of resolution BCVA. Failed autorefraction at presentation due to an Ortho-K-related infectious keratitis lesion was a significant predictor of poor final visual outcome (Snellen BCVA ≤6 / 12; odds ratio, 38.995; p = 0.030). Ortho-K lens-related infectious keratitis can lead to permanent corneal opacities and potentially devastating visual outcomes in children. Delayed time to presentation, large corneal lesions, failure of autorefraction, and non-summer seasons were associated with poorer outcomes. Proper education and early detection would be key to safe use of orthokeratology lenses in pediatric patients.

Poor visual outcome and associated factors among patients underwent cataract surgery at Debre Markos and Felege Hiwot comprehensive specialized hospitals, Northwest Ethiopia, 2023

ObjectiveThis study aimed to determine the proportion of poor visual outcome and associated factors among adult patients who underwent cataract surgery at Debre Markos and Felege Hiwot Comprehensive Specialized Hospitals in northwestern Ethiopia in 2023.MethodsA hospital based cross-sectional study was conducted on 418 adult patients who had undergone cataract surgery from June 07 to August 07, 2023. Patients were recruited using systematic random sampling with an interval of 2. A pre-tested semi-structured questionnaire, medical record review, and ophthalmologic examination were used to collect data. The collected data was entered into Epi-info version 7 and exported to SPSS version 25 software for analysis. Binary logistic regression was used to determine the factors associated with poor visual outcomes of cataract surgery. Variables with a p-value of less than 0.05 in the multivariable binary logistic regression were considered statistically significant.ResultsA total of 408 study participants with a median age of 65 years and a response rate of 97.6% took part. The proportion of poor visual outcomes of cataract surgery from 4 weeks to one year was 25.7% (95%CI: 21.6%, 30.3%). Factors responsible for poor visual outcomes of cataract surgery were intraocular lens implantation without a posterior chamber (AOR = 2.91, 95%CI:1.46,5.80), per-existing central corneal opacity (AOR = 3.83, 95%CI:1.52,9.69), pseudoexfoliation (AOR = 3.91,95%CI:1.39,11.88), age-related macular degeneration(AOR = 3.75, 95%CI:1.22, 11.88), glaucoma (AOR = 3.11, 95%CI:1.06,9.17) and striate keratopathy(AOR = 3.4, 95%CI: 1.11, 10.88).ConclusionIn this study, the proportion of poor visual outcomes of cataract surgery is higher than the World Health Organization recommendation. The study found that implantation of an intraocular lens without a posterior chamber, pre-existing central corneal opacity, pre-existing age-related macular degeneration, pre-existing glaucoma, pseudoexfoliation, and striate keratopathy were significantly associated with poor visual outcomes of cataract surgery. We recommend that ophthalmologists and cataract surgeons prioritize the reduction of surgical complications and pre-existing ocular co-morbidities to enhance post-operative visual acuity. Improving pre-operative assessment and refining surgical techniques like phacoemulsification will aid in achieving this goal.

Clinical Results of Prosthetic Eye Wear in Patients with Congenital Microphthalmos

Purpose: To report the long-term clinical outcomes of non-surgical treatment involving prosthetic eye wear in patients diagnosed with congenital microphthalmos.Methods: A retrospective review of the medical records of 20 patients was conducted. In total, 21 eyes were diagnosed with congenital microphthalmos between May 2008 and December 2022 at Seoul St. Mary’s Hospital in Korea.Results: This study included 20 patients (12 males and 8 females) with an average age of 4 months at diagnosis. The observed ophthalmic anomalies included two cases of congenital cataract, one of posterior embryotoxon, one of corneo-iris strand, four of iris coloboma, five of central corneal opacity, one of Peter's anomaly, and one of retrobulbar cyst. Accompanying systemic abnormalities were noted, such as lateral ventricle atrophy, corpus callosum atrophy, patent ductus arteriosus, atrial septal defect, and developmental language disorder. Genetic anomalies included anti SS-A/Ro antibody positivity, a 1:100 titer of anti-nuclear antibody, and a PAX6 mutation identified through next-generation sequencing. No specific family histories or pregnancy-related factors were noted. The average follow-up duration was 5.94 years (range: 1 month to 18 years), the average corneal diameter was 4.6 mm, the average axial length was 17.44 mm, the average age for first artificial eye trial was 5.96 years (range: 7 months to 19 years), and the average interval for artificial eye replacement was 22 months (range: 4 months to 5 years and 8 months).Conclusions: Twenty patients with congenital microphthalmos underwent gradual expansion of their prosthetic eyes by regular replacement and size increase without severe complications. This approach led to aesthetically and emotionally positive outcomes for the patients.

Anterior Segment Dysgenesis in A Child, A Rare Case Report: What Should We Do?

Introduction : Anterior segment dysgenesis affects a various range of ocular structure, including: cornea, iris, ciliary body, anterior chamber, and lens associated with approximate 50% of glaucoma
 Case Illustration : A 20 month-old boy presented with bilateral corneal opacity. VA was 6/480 on both eye. Examination revealed bilateral central corneal opacity with keratolenticular adhesions, anterior lens dislocation and opacification, aniridia, and posterior segment were difficult to evaluate. The IOP were 17.3 mmHg and 14.6 mmHg in the right and left eye respectively. The aforementioned feature contributed to the diagnosis of Type II Peters Anomaly (PA). Lens aspiration combined with adhesiolysis on the LE was performed. Patient was given topical antibiotic, corticosteroid, and anti- glaucoma medication post-operatively. Postoperative course showed no complication and the corneal opacity diminished
 Discussion : Lens aspiration in combination with adhesiolysis was performed because the presence of cataract interfered the visual axis and increased the risk of corneal decompensation due to keratolenticular adhesions. We considered to perform the surgery on the LE first because the corneal opacity was milder than the RE. Glaucoma is an almost ineluctable issue and medical therapy are necessary. Further evaluation was required to determine if a similar procedure is needed for the fellow eye and whether the IOL implantation was going to enhance the visual prognosis in the future
 Conclusion : The keratolenticular adhesions and corneal opacity in type II PA make the surgical approach more challenging. Cautious manipulation can prevent further corneal decompensation. In addition, parents should receive extensive counseling regarding the complications and prognosis

General Treatment and Ophthalmic Management of Peters' Anomaly.

Peters' anomaly (PA) is a manifestation of complex disorders in the development of the anterior segment of the eye. The most recognizable feature of the disease is a doughnut-shaped central corneal opacity and adhesions between the opacity and underlying iris. Glaucoma is observed in 30-70% of patients, with up to 50% of the patients showing concomitant vision-threatening disorders. Up to 60% of patients have systemic abnormalities or developmental delays. Being a rare malformation, PA is one of the most common congenital indications for corneal transplantation in infants. Penetrating keratoplasty is used as the primary method of treatment in cases with corneal opacification of a degree that forbids visual development in both eyes. The heterogeneity of co-occurring ophthalmic and systemic malformations in the spectrum of PA determines the wide range of success, defined by various endpoints: graft clarity or visual acuity. Although surgical advancement has made corneal grafting possible in younger children, it has a higher graft failure rate and worse visual prognosis than adult keratoplasty. Optical sector iridectomy, pupil dilation, or cornea rotation can alternatively be performed. Satisfying results of pediatric keratoprosthesis in particular cases of PA have been described. Postoperative treatment of PA aims to maintain a clear optical pathway and prevent amblyopia. This article therefore aims at reporting the ophthalmic treatment and need for multidisciplinary management of PA, including pharmacological and surgical treatment.

Topical Losartan Decreases Myofibroblast Generation But Not Corneal Opacity After Surface Blast-Simulating Irregular PTK in Rabbits.

To evaluate the efficacy of topical losartan after blast injury-simulating irregular phototherapeutic keratectomy (PTK) in rabbits. Twelve NZW rabbits underwent 100 pulse 6.5mm diameter PTK over a metal screen to generate severe surface irregularity and inhibit epithelial basement membrane regeneration. Corneas were treated with 0.8mg/mL losartan in balanced salt solution (BSS) or BSS 50 µL six times per day for six weeks after PTK. All corneas had slit lamp photography, with and without 1% fluorescein at two, four, and six weeks after PTK, and were analyzed using immunohistochemistry for the myofibroblast marker α-smooth muscle actin (α-SMA), keratocyte marker keratocan, mesenchymal cell marker vimentin, transforming growth factor (TGF)-β1, and collagen type IV. Topical 0.8mg/mL losartan six times a day significantly decreased anterior stromal α-SMA intensity units compared to BSS at six weeks after anterior stromal irregularity-inducing screened PTK (P = 0.009). Central corneal opacity, however, was not significantly different between the two groups. Keratocan, vimentin, TGF-β1, or collagen type IV levels in the anterior stroma were not significantly different between the two groups. Topical losartan effectively decreased myofibroblast generation after surface blast simulation irregular PTK. However, these results suggest initial masking-smoothing PTK, along with adjuvant topical losartan therapy, may be needed to decrease corneal stromal opacity after traumatic injuries that produce severe surface irregularity. Topical losartan decreased scar-producing stromal myofibroblasts after irregular PTK over a metal screen but early smoothing of irregularity would also likely be needed to significantly decrease corneal opacity.

Selective Endothelialectomy in Peters Anomaly: A Novel Surgical Technique and Its Clinical Outcomes in Children.

This study describes the surgical outcomes of selective endothelialectomy in Peters anomaly (SEPA), a relatively new technique to manage Peters anomaly (PA). This study included 34 eyes of 28 children who had a visually significant posterior corneal defect due to PA and underwent SEPA between 2012 and 2019. A selective endothelialectomy from the posterior corneal defect was performed while preserving Descemet membrane. The primary outcome measure was the resolution of corneal opacification. The secondary outcome measures were functional vision, complications, and risk factors for failure. At a mean postoperative follow-up of 0.96 ± 0.20 years, 29 eyes (85.3%) maintained a successful outcome. Mean preoperative and postoperative best-corrected visual acuities were 2.55 ± 0.13 and 1.78 ± 0.13 ( P < 0.0001), respectively. Ambulatory functional visual improvement was seen in 97%, and 23% attained vision ranging between 20/190 and 20/50. Corneal opacification failed to clear in 5 eyes (15%). Risk factors associated with surgical failure were female sex ( P = 0.006), disease severity ( P < 0.0001), glaucoma ( P = 0.001), and additional interventions after SEPA ( P = 0.002). In multivariate analysis, only disease severity (ie, a type 2 PA) was a significant risk factor for the failure of SEPA. There were no sight-threatening complications. SEPA is a safe and effective technique in select cases of posterior corneal defect due to PA. SEPA could be a potential surgical alternative to pediatric keratoplasty or optical iridectomy in children with central corneal opacification smaller than 7 mm due to PA.

Central Toxic Keratopathy after Small Incision Lenticule Extraction.

Small incision lenticule extraction (SMILE) is a corneal refractive surgical procedure based on flapless extraction of the intrastromal lenticule created by a femtosecond laser. Central toxic keratopathy is a rare, non-inflammatory complication of flap laser surgery using the femtosecond laser. This disorder is typically characterized by the triad of noninflammatory central corneal opacification, striae, and loss of stromal bed tissue, and it results in a hyperopic shift that causes a reduction in vision quality and it is not among the complications we are familiar with after the SMILE. Because of the growing number of refractive surgical procedures worldwide there may be an increasing incidence of this disorder. A differentiation from an inflammatory or infectious etiology and appropriate treatment is necessary for recovery. In this case report, we report a case of central toxic keratopathy in a 25 years old male patient after SMILE laser surgery.

Selective endothelial removal: A case series of a phase I/II surgical trial with long-term follow up.

Peters anomaly is a congenital condition which results in a central corneal opacity from birth. Selective Endothelial Removal (SER) is a novel surgical technique and a form of regenerative therapy, which encourages clearance of the central corneal opacity by the patient’s own corneal endothelial cells, and it may potentially be beneficial for the treatment of Peters anomaly. We have performed a phase I/II surgical trial, evaluating the safety of SER in four eyes (three patients) with Peters Anomaly. These patients underwent SER at between 9 and 39 months of age, each demonstrating clearance of central corneal opacities and improvements in vision post-operatively. No complications occurred in any of these eyes, at a minimal post-operative follow-up duration of 48 months. We conclude that SER for Peters anomaly is a safe surgical procedure. While encouraging efficacy outcomes have been observed, these findings should be further evaluated in a larger scale Phase II/III surgical trial.

First evidence of SOX2 mutations in Peters' anomaly: Lessons from molecular screening of 95 patients.

Peters' anomaly (PA) is a rare anterior segment dysgenesis characterized by central corneal opacity and irido-lenticulo-corneal adhesions. Several genes are involved in syndromic or isolated PA (B3GLCT, PAX6, PITX3, FOXE3, CYP1B1). Some copy number variations (CNVs) have also been occasionally reported. Despite this genetic heterogeneity, most of patients remain without genetic diagnosis. We retrieved a cohort of 95 individuals with PA and performed genotyping using a combination of comparative genomic hybridization, whole genome, exome and targeted sequencing of 119 genes associated with ocular development anomalies. Causative genetic defects involving 12 genes and CNVs were identified for 1/3 of patients. Unsurprisingly, B3GLCT and PAX6 were the most frequently implicated genes, respectively in syndromic and isolated PA. Unexpectedly, the third gene involved in our cohort was SOX2, the major gene of micro-anophthalmia. Four unrelated patients with PA (isolated or with microphthalmia) were carrying pathogenic variants in this gene that was never associated with PA before. Here we described the largest cohort of PA patients ever reported. The genetic bases of PA are still to be explored as genetic diagnosis was unavailable for 2/3 of patients. Nevertheless, we showed here for the first time the involvement of SOX2 in PA, offering new evidence for its role in corneal transparency and anterior segment development.

One-step thermokeratoplasty for pain alleviating and pre-treatment of severe acute corneal hydrops in keratoconus.

To observe the efficacy of simplified one-step thermokeratoplasty for the treatment of severe acute corneal hydrops in keratoconus. In this retrospective, noncomparative clinical study, 10 patients (10 eyes) with acute hydrops in keratoconus were treated with simplified one-step thermokeratoplasty. Pain, changes in the corneal curvature, thickness, and size and morphology of the Descemet membrane breaks were detected before and after surgery. Eight patients were successfully treated using modified deep anterior lamellar keratoplasty (DALK). Graft transparency, visual acuity, and immunological rejection were evaluated for 6 to 12mo. Pain and corneal oedema were promptly alleviated, and the intrastromal ruptures diminished within 3 to 6wk after thermokeratoplasty. At 3 to 6wk after corneal oedema was faded, Descemet membrane breaks and intrastromal ruptures were healed. Two patients did not undergo subsequent corneal transplantation after thermokeratoplasty. Eight patients underwent DALK successfully and safely after thermokeratoplasty, without corneal perforation. Central corneal opacity faded or disappeared within 6mo. The mean best-corrected visual acuity was increased to 20/30 at 12 mo after DALK. No one was observed with any immune rejection. One-step thermokeratoplasty can successfully and efficiently accelerate the absorption of prominent corneal oedema in severe acute hydrops patients. This simple procedure with no complications can be performed in the emergency department by residents. This method can improve the safety of DALK and obtain good postoperative vision. Long-term management of acute corneal hydrops using simplified one-step thermokeratoplasty seems promising.

Schnyder Crystalline Corneal Dystrophy: A Case Report

Schnyder crystalline corneal dystrophy (SCCD) is a rare hereditary corneal pathology, the clinical forms of which can be varied. It is classically characterized by the presence of central corneal disc or ring opacities, with or without the presence of crystals, and sometimes the association with a peripheral corneal arch or the limbic belt of Vogt. Its pathogenesis is linked to an abnormality in lipid metabolism with accumulation of lipids (phospholipids or cholesterol) in the cornea. We report the case of a 30-year-old patient, with no particular history, presenting a progressive decrease in visual acuity linked to central corneal opacities, in disc form following an accumulation of iridescent crystals in the central portion of the stroma, with a peripheral lipid arc all evolving for 15 years, and we describe its aspects in anterior segment optical coherence tomography and in vivo confocal microscopy. The purpose of our case is to recall the clinical and biological characteristics of Schnyder crystalline corneal dystrophy, and to underline the risk of occurrence of diffuse vascular damage secondary to a lipid disorder favoring cardiovascular accidents. Ophthalmologists should be aware of the ocular and general signs of Schnyder's dystrophy in order to preserve functional visual and vital cardiovascular prognosis.

Peter's anomaly-A homeotic gene disorder.

Peter's anomaly is a rare form of congenital anterior segment dysgenesis of the eye. Varying degrees of central corneal opacity and lenticulo-corneal or irido-corneal synechiae are the key hallmarks. The association of Peter's anomaly along with short stature, rhizomelia, broad short hands or brachydactyly, with facial dysmorphism, cleft lip, cleft palate, genitourinary and cardiovascular anomalies is a distinct and is often termed Peter's plus syndrome. Early detection is imperative to prevent sensory deprivation amblyopia. Glaucoma can be present at initial diagnosis or at any stage later, but treatment can be difficult. For the dense leukoma, corneal graft may be needed but visual prognosis is poor. Research focussing on gene editing and regenerative medicine using native corneal endothelial cells is ongoing.

Surgical management of ophthalmic abnormalities in Peters plus syndrome: case report

AbstractPurposeTo report a case of a patient with Peters plus syndrome (PPS) who underwent combined synechiolysis, penetrating keratoplasty, and trabeculectomy.MethodsA four‐year‐old female with bilateral central opacified cornea was referred to our department for corneal transplantation. Slit‐lamp examination demonstrated horizontal nystagmus, bilateral central corneal opacity and iridocorneal adhesion without lenticular involvement, which is characteristic of type I Peters anomaly. Intraocular pressure was 22 mmHg in the right eye and 26 mmHg in the left eye. Posterior segment ultrasonography showed no vitreous or retinal abnormalities. General and systemic examination revealed short stature and developmental delay without any other abnormality. The diagnosis of PPS was clinically made. The patient underwent combined synechiolysis, penetrating keratoplasty, and trabeculectomy of her left eye that was more affected.ResultsSix months postoperatively, corneal graft was clear with normal depth anterior chamber and normal intraocular pressure. For the right eye, the patient was put on antiglaucomatous eye drops while waiting for corneal transplantationConclusionsGlaucoma was proven to be a significant risk factor for graft failure and rejection after penetrating keratoplasty for Peters anomaly(1). In this case, combined surgeries were performed to allow better visual outcome and intraocular pressure control.Bibliography1. Dolezal KA, Besirli CG, Mian SI, Sugar A, Moroi SE, Bohnsack BL. Glaucoma and Cornea Surgery Outcomes in Peters Anomaly. Am J Ophthalmol 2019;208: 367–375.

A Clinical Case of Two-Stage Visual-Functional Rehabilitation of a Patient with Postinfectious Central Corneal Opacity in Combination with Mixed Astigmatism Using Laser Keratorefractive Surgery

Introduction: to evaluate the clinical and functional results of two-stage treatment in a patient with post-infectious Central corneal opacity combined with mixed astigmatism.Patient and methods. Patient N., 19 years old with postinfectious (postherpetic) Central corneal opacity, mixed astigmatism was examined and operated using two-stage corneal laser treatment. To determine the possibility of surgical treatment of the patient, a complex of General ophthalmology was performed (checking visual acuity near and far in natural conditions and in conditions of drug-induced mydriasis, IOP measurement, autorefractometry, examination of visual fields, A- and Bscanning, ophthalmoscopy with examination of the Central and peripheral areas of the fundus), as well as special (keratopography and Scheimpflug camera examination, optical coherence tomography (OCT) of the anterior segment of the eye with analysis of the epithelial map, quantitative assessment (Schirmer test-1) and qualitative (tear film rupture time) lachrymal products, assessment of the epithelium state when stained with vital dyes and infrared meibography) research methods. To determine the activity of herpetic infection, PCR diagnostics were performed. The follow-up period was 2 years.Results and discussion. To achieve high visual-functional rehabilitation while preserving the native lens, a two-stage treatment algorithm was developed using technologies of laser corneal refractive surgery. At the first stage, in order to regularize the ocular surface and eliminate Central corneal opacity, an inverted topographically oriented PRK was performed; at the second stage, residual refractive errors were corrected using topographically oriented FemtoLASIK technology.Conclusion. According to the results of a literature search and analysis of Internet resources, there were no previously recorded and published works using a similar two-stage method. Therefore, the described clinical case justifies the relevance and novelty of the goal and has an evidence-based Foundation for the use of a two-stage laser keratorefractive treatment system in the ophthalmological practice of visual and functional rehabilitation of patients with Central corneal opacity in combination with mixed astigmatism or hypermetropic refraction. The two-year postoperative follow-up period showed stable and high visual-functional results with no recurrence of the inflammatory process.

Term Newborn with Corneal Opacity.

Term Newborn with Corneal Opacity.

Phenotypic Spectrum of Peters Anomaly: Implications for Management.

The aim of this study was to characterize the wide phenotypic spectrum of Peters anomaly and to suggest a management algorithm based on disease phenotype. The charts of all children diagnosed with Peters anomaly between January 2000 and December 2013 were reviewed retrospectively. Anterior segment color photographs, anterior segment optical coherence tomography, and ultrasound biomicroscopy images were used to phenotype disease severity and to guide management. Disease severity was categorized to Peters anomaly type I and II according to lens involvement. Peters anomaly type I and II were further categorized from mild to severe disease according to the size and location of corneal opacity. Associated systemic findings were also documented. Eighty eyes of 54 patients with Peters anomaly were identified, of which 28 (51.9%) had unilateral disease. Peters anomaly type I was present in 40 patients (57 eyes, 71.2%) and Peters anomaly type II in 14 patients (23 eyes, 28.8%). Nine eyes (11.3%) had phenotypic features that required observation only, 24 eyes (30%) were amenable to pupillary dilation, 43 eyes (53.8%) with large, dense central opacity required penetrating keratoplasty, and 4 eyes (5.0%) had no intervention because of very poor prognostic features. Associated systemic abnormalities occurred frequently in Peters anomaly (n = 20, 37.0%), with congenital heart defect being the most common morbidity (n = 10, 18.5%). Peters anomaly presents with a variable phenotype ranging from minimal peripheral corneal opacity to extensive iris and lens adhesions with dense central corneal opacity detrimental to vision. Management can be standardized and guided by an algorithm based on phenotypic severity. Systemic abnormalities should be ruled out, regardless of the severity of Peters anomaly.

Corneal Remodeling in Peters Anomaly

A 14-day-old girl presented with bilateral opaque corneas and raised intraocular pressure (Fig A). Ultrasound biomicroscopy showed a well-defined central defect in the Descemet membrane and posterior corneal stroma (Fig B, arrows), with cystic intrastromal fluid clefts (Fig B, stars). Her diagnosis was Peters anomaly with glaucoma, and she underwent bilateral combined trabeculotomy with trabeculectomy. After 4 months follow-up, there was a significant improvement in peripheral cornea clarity, with persistent central corneal opacity (Fig C).