Routine Ophthalmologic Examination Research Articles

The effect of ocular dominance on choroidal structures

ABSTRACT This study aimed to compare the dominant and non-dominant eyes of healthy individuals in terms of CT and CVI values to assess the effect of ocular dominance on choroidal morphology. Three hundred eyes of 150 individuals were included in this study. All patients underwent routine ophthalmological examinations and hole-in-the-card tests to determine the dominant eye. EDI-OCT was used to obtain choroidal images. Choroidal thickness (CT) was measured at three points on the choroid including the subfoveal region (subfoveal choroidal thickness (SFCT)), 1500 μm nasal (NCT) and temporal (TCT) to the fovea. Choroidal vascularity index (CVI), total choroidal area (TCA), luminal area (LA), and stromal area (SA) were measured at fovea-centered choroidal area by image binarization via Image J software. While 93(%62) participants were right-eyed, 57(%38) participants were left-eyed. We could not detect any difference in SFCT, NCT, TCT, TCA, LA, SA, and CVI measurements between the dominant and the non-dominant eyes. (p > 0.05 for all). We could not detect any effect of ocular dominance on choroidal structures. These results also support the use of randomized ocular data regardless of which eye is dominant when investigating CVI and CT in scientific research.

Predicting visual outcomes in keratoprosthesis surgery with critical flicker fusion frequency, B-scan, visual electrophysiology and endoscopy

PurposeThis study evaluates the predictive power of the critical flicker fusion frequency (CFF) test for visual outcomes in keratoprosthesis (KPro) candidates, comparing its accuracy with B-scan ultrasound, flash visual evoked...

Importance of optical coherence tomography before cataract surgery

PurposeTo determine the importance of optical coherence tomography (OCT) in patients scheduled for cataract surgery who present with no pathologies in biomicroscopic fundus examination.DesignRetrospective study.MethodsIn this study, the routine ophthalmologic examination of patients who were recommended cataract surgery was performed.Occult retinal pathologies were evaluated using OCT in patients without any pathologies in biomicroscopic fundus examination.According to whether retinal pathologies were detected on OCT, the patients were divided into two groups: normal and abnormal OCT.The findings of patients with retinal pathologies on OCT and their distribution according to age were also evaluated.ResultsA total of 271 eyes from 271 patients were evaluated.The number of patients with retinal pathologies on OCT despite normal fundoscopic examination findings was 38(14.0%).Of these patients,15(39.4%) had an epiretinal membrane,10(26.3%) had age-related macular degeneration, eight(21%) had vitreomacular traction, two(5.2%) had a lamellar hole, and 1(2.6%) patient each had a full-thickness macular hole, an intraretinal cyst, and photoreceptor layer damage.The age distribution of the patients with retinal pathologies was as follows: two patients,<60 years; six patients,60–70 years;14 patients,70–80 years; and 16 patients,>80 years.The rate of patients aged > 70 years and above was 78.9%.There was no statistically significant difference between the normal and abnormal OCT groups in terms of age, gender, the presence of systemic diseases, visual acuity, central macular thickness, and cataract type or density(p > 0.05 for all).ConclusionIn one of seven patients evaluated, retinal pathologies were detected on OCT despite normal fundoscopic examination findings.OCT can be used to detect occult retinal pathologies that cannot be detected by biomicroscopic fundus examination before cataract surgery.

Cytomegalovirus Retinitis in the Modern Era of Solid Organ Transplantation

BackgroundCytomegalovirus retinitis (CMVR) is a well-described complication of CMV disease in immunocompromised hosts. While robust data exists for CMVR in patients with acquired immunodeficiency syndrome (AIDS), the incidence and risk factors for CMVR in solid organ transplant recipients (SOTR) with CMV viremia are less defined. MethodsWe performed a retrospective cohort study of SOTR who had CMV viremia and underwent routine ophthalmologic examination between 1/1/2018 and 3/16/2022. Univariate statistics were performed to evaluate risk factors for development of CMVR. ResultsOverall, 38 patients were included, primarily kidney (78.9%), heart (7.9%), and liver (7.9%) transplant recipients. Five patients (13.2%) developed CMVR during the study period. CMVR was diagnosed an average 281 days after index transplantation, 84 days from the most recent rejection episode, and 69 days from onset of viremia. Only 1 patient (20%) had symptoms at the time of CMVR diagnosis. CMVR was associated with preceding allograft rejection as well as transplanted organ type. ConclusionWhile CMV tissue disease more commonly manifests in other organs, CMVR occurred relatively frequently in this group of high-risk SOTR with CMV viremia. As most of the patients in our study did not have ocular symptoms at the time of diagnosis, routine ophthalmologic screening should be considered in SOTR with CMV viremia.

Epidemiology of childhood cataracts

Aims: The aim of the study was to investigate the epidemiologic characteristics of pediatric patients with cataracts and to make a statistical comparison. Methods: The study included 25 eyes of 19 children aged 16 years and younger who presented to Kırıkkale University, Faculty of Medicine, Department of Ophthalmology with visual complaints between April 2018 and November 2023. The information about the patients was obtained and recorded by scanning the patient files. The patient data included age, gender, cataract type, trauma history, medical history, family history, and surgical intervention. Results: In the study, 25 eyes of 19 children were examined. Eleven (57.9%) of the patients were girls, and eight (42.1%) were boys, with a mean age of 4.74±4.22 years (0.2-14). When all age groups were compared, there was no statistically significant difference between boys and girls in the incidence of childhood cataracts (p=0.532). Both eyes were affected in 5 children (26.3%), the right eye in 8 (42.1%), and the left eye in 6 (31.6%). Regarding etiology, 5 were idiopathic, 4 were genetic, 2 were metabolic syndrome, 2 were steroid-induced, and 6 were traumatic. Conclusion: Congenital cataracts are the most common type of cataract seen in early childhood. Routine ophthalmologic examinations for chronic drug use and raising awareness among families in cases of childhood trauma are important.

Alterations in Corneal Sensitivity, Staining and Biomechanics of Alopecia Areata Patients: Novel Findings in a Case-Control Study.

Background: A higher prevalence of ophthalmological alterations in systemic inflammatory diseases has been demonstrated. Objectives: Our objectives were to determine anterior segment findings and corneal properties in alopecia areata (AA). Methods: This is a case-control study. Severe AA patients (Severity of Alopecia Tool > 50%) and non-AA subjects underwent a general ophthalmological examination, a Pentacam and Corvis scheimpflug technology examination (Oculus Optikgeräte GmbH, Wetzlar, Germany). Visual acuity, refractive error, corneal aesthesiometry, and biomechanical and topographic variables were registered. Results: In total, 25 AA patients (50 eyes; 50.6 ± 8.1 years) and 29 controls (58 eyes; 49.4 ± 8.6 years) were included. AA patients had decreased corneal sensitivity, more corneal staining, and a more advanced cataract (p ≤ 0.004). The anterior topographic flat meridian, mean anterior keratometry, and maximum keratometric point were increased in AA (p ≤ 0.040), while pachymetry values were thinner (p ≤ 0.001). Keratoconus index and Belin/Ambrosio-enhanced ectasia total deviation display were increased (p ≤ 0.007). Two eyes with a topographic diagnosis of keratoconus and four eyes with subclinical keratoconus were detected in AA. Applanation lengths were smaller in AA (p ≤ 0.029). The Corvis Biomechanical Index was increased in AA (p = 0.022). Conclusions: AA patients have reduced corneal sensitivity and increased corneal staining. Topographic and biomechanical parameters are altered, and there could be a higher risk of keratoconus, thus possibly requiring routine ophthalmological examination.

An Eye for A Foot: Alarming Unawareness of Diabetic Retinopathy Among Diabetic Foot Patients.

This study aims to determine the awareness of diabetic retinopathy in patients hospitalized for diabetic foot ulcers, examine their clinical and demographic characteristics, and evaluate their treatment needs. In this prospective study, 62 consequent patients with diabetic foot ulcers who were hospitalized for further treatment in Diabetic Foot Department between June and August 2023 were subjected to ophthalmological examinations. Detailed anterior and posterior segment examinations were performed. Clinical and demographic characteristics and HbA1c levels were recorded. Thirty-nine patients (62.9%) were male and 23 (37.1%) were female. The mean age was 61 ± 11.4 years. The patients had diabetes mellitus (DM) for an average of 19.2 ± 9.6 years. The average HbA1c value of the patients was 9 ± 2.3%. Minor amputation was performed in 35 of 62 patients (56.5%) during treatment. Thirty-one patients (50%) were unaware of the risk of diabetic retinopathy. Of those "unaware" 31 patients, 26 (83.9%) had diabetic retinopathy. Diabetic retinopathy was detected in 57 patients (91.9%) and 3-month interval ophthalmological follow-up screening was recommended for 77 eyes. Eighty percent of the patients never had ophthalmological examination. Intravitreal (IV) injection was performed in 44 eyes, panretinal photocoagulation (PRP) in 2 eyes, and intravenous injection + PRP + vitreoretinal surgery in one eye. Diabetic foot ulcers and diabetic retinopathy are often accompanied by each other. Patients should be informed about this and strongly encouraged to undergo routine ophthalmological examinations, especially when they have advanced diabetic foot disease. Diabetic foot surgeons should keep in mind that a poor eye cannot detect diabetic foot problems.

Bone Marrow-derived Mesenchymal Stem Cell Therapy in Retinitis Pigmentosa.

To determine the effectiveness of bone marrow-derived mesenchymal stem cell therapy on visual acuity and visual field in patients with retinitis pigmentosa. Stem cell treatment in retinitis pigmentosa provides improvement in visual acuity and visual field. Forty-seven eyes of 27 patients diagnosed with retinitis pigmentosa were included in our study. Allogeneic bone marrow-derived mesenchymal stem cells were administered by deep subtenon injection. Complete routine ophthalmological examinations, optical coherence tomography (Zeiss, Cirrus HD-OCT) measurements, and visual field (Humphrey perimetry, 30-2) tests were performed on all patients before the treatment and on the 1st, 3rd, and 6th month after treatment. The best corrected visual acuities of the patients were determined by the Snellen chart and converted to logMAR. Visual evoked potential (VEP) and electroretinogram (ERG) examinations of the patients before the treatment and on the 6th month after the treatment were performed (Metrovision) data were compared. Visual acuities were 0.74 ± 0.49 logMAR before treatment and 0.61 ± 0.46 logMAR after treatment. Visual acuity had a statistically significant increase (p < 0.001). The visual field deviation was found to be -27.16 ± 5.77 dB before treatment and -26.59 ± 5.96 dB after treatment (p = 0.005). The ganglion cell layer was 46.26 ± 12.87 μm before treatment and 52.47 ± 12.26 μm after treatment (p = 0.003). There was a significant improvement in Pattern VEP 120º P100 amplitude compared to that before the treatment (4.43 ± 2.42 μV) and that after the treatment (5.09 ± 2.86 μV) (p = 0.013). ERG latency measurements were 18.33 ± 15.39 μV before treatment and 20.87 ± 18.64 μV after treatment for scotopic 0.01 (p = 0.02). ERG latency measurements for scotopic 3.0 were 20.75 ± 26.31 μV before treatment and 23.10 ± 28.60 μV after treatment (p = 0.014). Retinitis pigmentosa is a progressive, inherited disease that can result in severe vision loss. In retinitis pigmentosa, the application of bone marrow-derived mesenchymal stem cells by deep subtenon injection has positive effects on visual function. No systemic or ophthalmic side effects were detected in the patients during the 6-month follow-up period.

Prevalence of ocular toxicity induced by antimalarial drugs in patients with rheumatic diseases

Several studies have reported the possibility of ocular toxicity with the use of antimalarial drugs by patients with rheumatic diseases. Thus, the present study intended to investigate the prevalence of such toxicity in these patients and the feasibility of the regression of changes after medication discontinuation. The present retrospective study included the medical records of 598 patients with rheumatoid arthritis (RA), systemic lupus erythematosus (SLE), and mixed connective tissue disorders (MCTDs) who took chloroquine (CQ) or hydroxychloroquine (HCQ) and underwent routine ophthalmologic examinations. Moreover, if a patient had any ocular abnormality reported by the examining ophthalmologist, he/she was referred to another ophthalmologist to confirm the primary findings. Also, the patients with abnormal ocular findings who discontinued the drugs were re-examined 12 months after the drug discontinuation to evaluate the rate of regression of the ocular changes. According to our findings, 81 out of 598 patients (13.6%) had ocular toxicity in routine ophthalmologic examinations. However, ocular changes were ruled out in 49 (8.2%) patients using a second examination by another ophthalmologist. Therefore, retinopathy was confirmed in 32 out of 598 (5.4%) cases. Moreover, the patients with eye complications were significantly older than those without ocular toxicity (P = 0.03), while no significant relationship was found between ocular toxicity and other variables. Finally, of 32 patients with ocular toxicity, 12 patients were re-examined 12 months after the drug discontinuation, revealing normal findings in 7 (58%) patients, while 5 (42%) had irreversible ocular abnormalities. According to our findings, the prevalence of HCQ- and CQ-induced retinopathy was quite considerable in patients receiving these drugs. Therefore, despite the current controversies, we recommend that all patients receiving antimalarial drugs undergo screening for ocular toxicity.

Adverse reactions of cycloplegic and mydriatic eye drops in routine ophthalmologic examination of pediatric patients in Saudi Arabia: A retrospective study and survey of pediatric ophthalmologists.

The purpose of this study was to explore the side effects of using cycloplegic eye drops at ophthalmology clinics at King Saud Medical City (KSMC) in Riyadh, Saudi Arabia. Moreover, to have an insight into physicians' attitude towards the management of these side effects. A retrospective cross-sectional study where medical records of pediatric patients who attended ophthalmology clinics at KSMC. Subjects were selected after reviewing their files and based on their reaction to the ocular drops. In addition, the response of ophthalmologists was obtained through a questionnaire distributed through electronic channels. A total of 111 patients' medical records were included in this study. The most reported cycloplegic agents that caused side effects were cyclopentolate 1%, tropicamide 1%, and phenylephrine 2.5%. Fifty-three percentage of physicians reported that changing their way of administering cycloplegic drops in practice plays a role in reducing some side effects. The most reported side effects of using cycloplegic eye drops were facial flushing 68%, followed by fever 46%, and irritability 38% of cases. Few children who experienced side effects needed medical intervention. Side effects caused by cycloplegic agents are usually mild and rarely severe. There are some systemic side effects such as hallucinations, psychosis, or seizures. Proper parental counseling before administering cycloplegic agents and proper clinical management in case of severe side effects is crucial. Prophylactic measures to reduce the incidence of these side effects are advisable.

Usefulness Assessment of Automated Strabismus Angle Measurements Using Innovative Strabiscan Device.

The variability of the obtained results of manual tests assessing the angle of strabismus depends on the experience, skills, and training of the examiner. The authors hope that this new measuring device will provide a more sensitive and repeatable method for detecting small strabismus angles compared to the gold standard-PCT. The purpose of this article is to present an innovative strabismus angle demonstration device, called Strabiscan, to provide automated measurements of eye deviation and to compare the obtained results of these measurements to the traditional manual method. For patients with manifest strabismic disease (n = 30) and a group of healthy subjects (n = 30), a detailed history was taken and routine ophthalmologic examinations were performed, including best-corrected distance visual acuity, assessment of refractive error using an autorefractometer after cycloplegia, biomicroscopic evaluation of the anterior segment of the eye and evaluation of the eye fundus by indirect ophthalmoscopy. Subsequently, each patient and healthy subject was subjected to a prismatic cover-uncover test using a manual method, after which the presence of strabismus was detected and its angle assessed using a Strabiscan demonstration device. In the control group using the Strabiscan demonstration device, small-angle latent strabismus ≤ 3DP was diagnosed in 83% of patients, while >3DP was found in 13%. In contrast, using the prismatic cover-uncover test, latent strabismus ≤ 3DP was diagnosed in only 13% of patients, and latent strabismus with an angle > 3DP was found in 13% of patients. No statistically significant differences were noted in the measurements of strabismus angles made by the different methods. The Strabiscan demonstration device allows quick and accurate assessment of the strabismus angle. Compared to the prismatic cover-uncover test, it has a higher sensitivity for detecting low-angle latent strabismus. Measurements with the Strabiscan do not require the presence of additional assistants for the test.

The effect of strabismus surgery on psychosocial and functional quality of life

Aims: To evaluate the effect of strabismus surgery on psychosocial and functional quality of life. Methods: 50 adult strabismus patients who presented to our outpatient clinic with the complaint of strabismus in one eye were included in the study. Routine ophthalmologic examinations and strabismus controls were performed. With the diagnosis of monocular fixed eso/exotropia, unilateral horizontal muscle retraction and resection surgery were planned, and preoperative adult strabismus score (AS-20), Rosenberg self-esteem, body perception, and social appearance anxiety questionnaires were applied. A postoperative PD of 10 or less was considered success, and the questionnaires were repeated at the 2nd postoperative month. Results: The mean age of the patients was 21.54±3.95 (16-32) years. Twenty-two of the patients were female, and 28 were male. Pre-operative and post-operative strabismus AS-20 score, Rosenberg self-esteem, body perception, and social appearance anxiety scales showed statistically significant differences (p&lt;0.05, p&lt;0.001, p&lt;0.001, p&lt;0.001, p&lt;0.001). Conclusion: Strabismus is an important disease that can cause difficulties in social life both in childhood and adulthood. The aim of strabismus surgery is to restore normal facial appearance as well as functional correction. Our study results showed that successful strabismus surgery can improve the psychosocial and functional quality of life.

Reverse straatsma syndrome and lamellar cataract: a case report and review of the literature

Myelinated retinal nerve fiber (MRNF) is a developmental anomaly that is often detected during routine ophthalmological examination, but can be an ocular finding in a wide variety of diseases. An important example of this group is the Straatsma Syndrome. Straatsma Syndrome is an entity that presents with the triad of myopia, amblyopia, and MRNF. When this triad is accompanied by hyperopia instead of myopia, it is referred to as the Reverse Straatsma Syndrome. Here, we present a case of Reverse Straatsma Syndrome accompanied by lamellar congenital cataracts.

Genetic Characteristics and Clinical Manifestations of Foveal Hypoplasia in Familial Exudative Vitreoretinopathy

This study aimed to ascertain the occurrence of foveal hypoplasia (FH) in individuals diagnosed with familial exudative vitreoretinopathy (FEVR). Retrospective cohort study. In this study, FEVR families and sporadic cases were diagnosed at the Eye and ENT Hospital, Fudan University, between 2017 and 2023. All patients attended routine ophthalmologic examinations and genetic screenings. The classification of FH was determined using optical coherence tomography (OCT) scans. The FH condition was classified into 2 subgroups: group A (FH being limited to the inner layers) and group B (FH affecting the outer layers). A total of 102 eyes from 58 patients were suitable for analysis. Forty-nine mutations in LRP5, FZD4, NDP, TSPAN12, KIF11, CTNNB1, and ZNF408 were examined and detected, with 26 of them being novel. Forty-seven eyes (46.1%) revealed FH. The majority (53.2%) were due to the typical grade 1 FH. Patients with mutations in LRP5 and KIF11 were found to exhibit a higher prevalence of FH (P = .0088). Group B displayed the lowest visual acuity compared with group A (P = .048) and the group without FH (P < .001). The retinal arteriolar angle in group B was significantly smaller than in group A (P = .001) and those without FH (P < .001). This study offers a new diagnostic approach and expands the spectrum of FEVR mutations. LRP5 and KIF11 were found to be more susceptible to causing FH in patients with FEVR. FEVR eyes with FH exhibited both greater visual impairment and reduced retinal arteriolar angles. The assessment of foveal status in patients with FEVR should be valued.

Effect of Corneal Collagen Crosslinking with Riboflavin in Patients of Progressive Keratoconus: A Prospective Cohort Study

Introduction: Keratoconus is a non inflammatory disease characterised by progressive corneal thinning that results in a cone-like ectasia, irregular astigmatism, and decreased vision. Advanced disease can result in corneal scarring and blindness, necessitating penetrating keratoplasty. The only treatment believed to have the ability to stop or decrease the progression of keratoconus is Collagen Cross-Linking (CXL). Aim: To evaluate the efficacy of corneal collagen cross-linking with riboflavin (C3R) in patients with keratoconus by studying the outcomes in terms of Uncorrected Visual Acuity (UCVA), Best Corrected Visual Acuity (BCVA), manifest refraction, and corneal topography. Materials and Methods: A hospital-based prospective cohort study was conducted at the Regional Institute of Ophthalmology, Government Medical College, Thiruvananthapuram, Kerala, India from June 2017 to June 2018. Fifteen eyes of 12 patients who underwent corneal collagen cross-linking for progressive keratoconus were included. Routine ophthalmological examinations was done for all patients. Patients under the age of 35 years with progressive keratoconus, an average K value not exceeding 60 D, and who had not undergone any other surgical modalities of treatment were included in the study. Patients with scarred cornea or hydrops, active ocular infection, or pachymetry &lt;400 µm were excluded. Detailed informed consent was obtained from all patients before surgery. Preoperative UCVA, BCVA cylinder, Spherical Equivalent (SE), and topography values were obtained. All patients were followed-up at three and six months postoperative period to look for changes in UCVA, BCVA, manifest refraction, and corneal topography. Data were expressed as the mean±Standard Deviation (SD) pre- and postoperatively and analysed statistically using the paired t-test, with p&lt;0.05 considered statistically significant. Analysis was conducted using Statistical Package for Social Sciences (SPSS) version 16.0. Results: On follow-up at six months post-treatment, UCVA (log MAR) improved from 0.87±0.40 to 0.65±0.35 (p-value=0.001), and BCVA (log MAR) changed from 0.37±0.21 to 0.17±0.22 (p-value=0.001). K max decreased from 54.90±6.05 to 52.67±5.02 (p-value=0.001), and K min decreased from 48.14±4.24 to 45.93±4.07 (p-value=0.001). Astigmatism and SE also showed statistically significant improvement post-procedure (p-value 0.001 and 0.002, respectively). Astigmatism reduced from -3.50±1.58 to -2.90±1.37. SE reduced from -4.93±3.92 to -4.28±3.48. No significant complications were noted in any of the patients. Conclusion: The CXL is an effective procedure for stabilising the progression of keratoconus, thus reducing the burden of preventable blindness and the need for keratoplasty.

Characterisation of cataracts and other ophthalmic findings in various species of captive penguins.

The identification of ophthalmic diseases that affect vision and/or cause discomfort should be a priority in captive penguins to improve their overall health and quality of life. A routine ophthalmological examination was performed on 80 clinically normal penguins (160 eyes), and any lesions observed were recorded. Ocular lesions were frequent (56% of penguins), with cataracts being the most common (48.8% of penguins). Cortical cataracts (63% of eyes) and posterior subcapsular cataracts (27.4%) were the most commonly occurring. All maturation stages were found; incipient cataracts (52.1% of eyes with cataracts) were predominant, while Morgagnian cataracts (8.2%) were the least frequent. A correlation existed between lenticular changes and increasing age. Uveitis was present in 43.8% of eyes with cataracts, and ectropion uveae was the predominant clinical sign. Other ocular findings included blepharitis (3.8% of all eyes), corneal leukoma (5.6%) and posterior lens subluxation (7.5%). The small number of birds of some species prevented the comparison of ophthalmic findings between species. This study corroborates the high prevalence of ocular lesions in captive penguins. Cataracts were frequent and age related. Most cataracts were cortical, and the predominant maturation stage was incipient. Lens-induced uveitis was a common finding. Lowered intraocular pressure was related to cataract formation.

214. Routine Ophthalmologic Examination in Klebsiella pneumoniae Bacteremia Is Not Necessary: Incidence of and Risk Factors for Ocular Involvement

Abstract Background Klebsiella pneumoniae bacteremia can result in severe clinical manifestations including metastatic infection, which is not uncommon in Asia. However, there are limited data on the incidence and risk factors for ocular involvement in K. pneumoniae bacteremia. Methods We retrospectively reviewed the medical records of all patients with K. pneumoniae bacteremia who underwent ophthalmologic examination in a tertiary center in Seoul, Korea, from February 2012 to December 2020. Two retinal specialists reviewed the findings of the ophthalmologic examinations and classified them as endophthalmitis, chorioretinitis, and no ocular involvement. Results Of 689 patients, 56 (8.1%; 95% CI 6.2-10.4) had ocular involvement, and 9 (1.3%; 95% CI 0.6-2.5) were diagnosed with endophthalmitis. Of 47 patients with chorioretinitis, 45 (95.7%) improved with systemic antibiotic therapy alone. Community-onset bacteremia (100% vs 62.1% vs 57.4%, P=0.04), cryptogenic liver abscess (55.6% vs 11.8% vs 8.5%, P=0.003), and metastatic infection (66.7% vs 5.8% vs 10.6%, P &amp;lt; 0.001) were more common in endophthalmitis than in no ocular involvement or chorioretinitis. In multivariable analysis, cryptogenic liver abscess (aOR, 6.63; 95% CI, 1.44-35.20) and metastatic infection (aOR, 17.52; 95% CI, 3.69-96.93) were independent risk factors for endophthalmitis. Endophthalmitis was not associated with 30-day mortality.Table 1.Demographics, clinical characteristics and outcomes of patients with K. pneumoniae bacteremia according to degree of ocular involvement Data presents n (%) unless indicated otherwise. aNo significant difference (P&amp;gt;0.017) between any of the pairs in post hoc analysis. bWithin 1 month. cDefined as one of the following conditions: (i) daily receipt of immunosuppressants including corticosteroids, (ii) human immunodeficiency virus infection, (iii) solid organ or hematopoietic stem cell transplant recipients, (iv) receipt of chemotherapy for underlying malignancy during the previous 6 months, and (v) underlying immune deficiency disorder. dDose equivalent to ≥20mg/day of prednisone for two weeks or longer. eSignificantly different (P &amp;lt;0.017) between endophthalmitis and no ocular involvement. fSignificantly different (P &amp;lt;0.017) between endophthalmitis and chorioretinitis. gMetastatic infection other than ocular involvement. hSignificantly different (P &amp;lt;0.017) between chorioretinitis and no ocular involvement.Table 2.Risk factors for endophthalmitis in patients with K. pneumoniae bacteremiaaMetastatic infection other than ocular involvement.Table 3.Risk factors for 30-day mortality in patients with K. pneumoniae bacteremiaaThird-generation cephalosporin-resistant or carbapenem-resistant Conclusion Endophthalmitis is rare in Asian patients with K. pneumoniae bacteremia. Targeted ophthalmologic examination in those with cryptogenic liver abscess, multiple metastatic infections, or ocular symptoms may be more appropriate than routine examination of all patients. Disclosures All Authors: No reported disclosures

Early effects of cardiopulmonary bypass surgery on retinal nerve fiber layer and ganglion cell layer

PurposeTo determine the effects of cardiopulmonary bypass surgery on retinal nerve fiber layer, ganglion cell layer, and macula by optic coherens tomography (OCT). MethodSixty-six eyes of 33 patients aged between 44 and 74 who were indicated for cardiopulmonary bypass surgery in the cardiovascular surgery clinic were included in the study. Routine ophthalmologic examinations of all patients were performed before and 1 week after surgery. In addition, 3D(H) Macula+5 Line Cross 12 × 9 mm mod and Peripapilar 3D Disk 6 × 6 mm mod data were analyzed with OCT (Topcon, Triton Swept Source-OKT, Tokyo, Japan) device. Peripapillary total, superior, inferior retinal nerve fiber layer (RNFL), optic disc cavity volume, cup-to-disc ratio, macular ganglion cell layer (GCL), macular thickness were compared before and after surgery. ResultsAfter cardiopulmonary bypass surgery, thickening was detected in the total RNFL (p<0.001), superior RNFL (p = 0.01) and inferior RNFL (p<0.001) layers. There was no change in the values of GCL, macular thickness, optic disc cupping volume, cup-to-disc ratio after surgery (p>0.05).There was a positive correlation (r = 0.392 p<0.05) between the patients' blood oxygen (PO2) values during bypass surgery with their post-surgical GCL+ values, and a negative correlation between optic disc cup volumes (r=-0.349 p<0.05). ConclusionRNFL thickening has been detected in patients undergoing cardiopulmonary bypass surgery. This thickening may occur secondary to ischemic edema that occurs during surgery. Considering the late complications of ischemic edema in the RNFL, oxygen levels should be kept at an optimum level during surgery and long-term ophthalmologic follow-ups should be performed.

Evaluation of Choroidal and Retinal Features in Patients with Primary Vasculitis-An Original Optical Coherence Tomography and Optical Coherence Tomography Angiography Study.

Ocular manifestations have been described in the course of various types of vasculitis. However, there seems to be no routine ophthalmological examinations for patients suffering from those diseases. To ensure holistic care we aimed to investigate any retinal and choroidal abnormalities in patients suffering from primary vasculitis. The objective was to use non-invasive methods, which would not be time- and cost-consuming, yet would be helpful in routine tests. We conducted a prospective and observational study in 41 patients (78 eyes) with 5 types of primary vasculitis, including: Takayasu's arteritis; giant cell arteritis; Buerger's disease; granulomatosis with polyangiitis; and polyarteritis nodosa. A total of 44 healthy individuals were enrolled in the control group for comparison (88 eyes). With the use of optical coherence tomography, optical coherence tomography angiography, and MATLAB, the following parameters were assessed: choroidal thickness; vascularity index; area and perimeter of foveal avascular zone; and circularity index. The following parameters were lower in the study group compared to the control group: mean nasal and temporal CTs; mean central, temporal, and nasal CVI; and mean CI. In contrast, the results of mean central CT as well as the area and perimeter of FAZ were higher in the study group. The differences were statistically significant in the case of all parameters except for CI. Conducting routine ophthalmological examinations in patients diagnosed with vasculitis by assessment of the retina and choroid by measuring parameters like CT, CVI, area and perimeter of FAZ, and CI could be beneficial, as it may detect pathological changes before any ocular symptoms alarm the patients. CVI seems to be especially promising for choroidal evaluation, as it appears to be less influenced by various factors compared to CT.

Routine ophthalmologic examination in Klebsiella pneumoniae bacteremia is not necessary: incidence of and risk factors for ocular involvement.

Klebsiella pneumoniae bacteremia is known to present a virulent clinical course, including multiple metastatic infections, which is not uncommon in Asia. However, there are limited data on the incidence and risk factors for ocular involvement in K. pneumoniae bacteremia. We retrospectively reviewed the medical records of all patients with K. pneumoniae bacteremia who underwent ophthalmologic examination in a tertiary center in Seoul, Korea, from February 2012 to December 2020. Two retinal specialists reviewed the findings of the ophthalmologic examinations and classified them as endophthalmitis, chorioretinitis, and no ocular involvement. Of 689 patients, 56 [8.1%; 95% confidence interval (CI) 6.2-10.4] had ocular involvement, and 9 (1.3%; 95% CI 0.6-2.5) were diagnosed with endophthalmitis. Of 47 patients with chorioretinitis, 45 (95.7%) improved with systemic antibiotic therapy alone. Community-onset bacteremia (100% vs 62.1% vs 57.4%, P = 0.04), cryptogenic liver abscess (55.6% vs 11.8% vs 8.5%, P = 0.003), and metastatic infection (66.7% vs 5.8% vs 10.6%, P < 0.001) were more common in endophthalmitis than in no ocular involvement or chorioretinitis. In the multivariable analysis, cryptogenic liver abscess [adjusted odds ratio (aOR), 6.63; 95% CI 1.44-35.20] and metastatic infection (aOR, 17.52; 95% CI 3.69-96.93) were independent risk factors for endophthalmitis. Endophthalmitis was not associated with 30-day mortality. Endophthalmitis is rare in Asian patients with K. pneumoniae bacteremia. Targeted ophthalmologic examination in those with cryptogenic liver abscess, metastatic infection, or ocular symptoms may be more appropriate than routine examination of all patients.