The Impact of Severe COVID-19 on Corneal Endothelial Cells-Analysis of the In Vivo Noncontact Specular Microscopy.

Purpose: This study aimed to investigate the effects of severe COVID-19 infection on the corneal endothelium via in vivo specular microscopy.

Methods: This was an observational, prospective, and controlled study including 56 eyes of 56 severe COVID-19 patients, compared to after-recovery and 56 eyes of 56 age- and gender-matched healthy controls.

Results: Endothelial cell density was lower in the active disease period compared to healthy controls ( = .

Assessment of the impact of N95 respirators or surgical masks use on the retinal microvasculature.

Purpose: To determine the possible impact of wearing N95 respirator or surgical masks on retinal vessel diameters and choroidal thickness in healthy healthcare workers.

Methods: Diameters of peripapillary retinal arteries and veins and choroidal thickness values at the foveal center and at 1000 μm distances from the foveal center in both nasal and temporal directions were measured before mask wearing using a spectral-domain optical coherence tomography. After four hours (h) of N95 or surgical mask wearing vessel diameter and choroidal thickness measurements were repeated.

Change in retinal vessel diameter and choroidal thickness in patients with severe COVID-19: Change In Retinal Parameters In Patients With Severe COVID-19.

Purpose: To compare the differences in retinal vascular structure and choroidal thickness between the active disease and post-recovery periods in COVID-19 patients and healthy controls.

Material And Methods: This prospective, cross-sectional study included 30 eyes from 30 patients with severe COVID-19 and 30 eyes of 30 sex-matched healthy controls. Central macular thickness (CMT), subfoveal choroidal thickness (CT) and retinal vascular changes of patients were measured after positive polymerase chain reaction (PCR) (where the patient had COVID-19-related symptoms) and then three months after two negative PCRs.

Posterior ocular structural and vascular alterations in severe COVID-19 patients.

Purpose: This study aimed to evaluate posterior ocular structural and vascular changes in severe coronavirus disease 2019 (COVID-19) patients.

Methods: This was an observational, prospective, and controlled study including 106 eyes of 53 severe COVID-19 patients, compared to after recovery and 106 eyes of 53 age- and gender-matched healthy controls. All subjects were previously healthy adults and were assessed using spectral domain optical coherence tomography (SD-OCT) and ImageJ software.

Comparison of the Thickness of the Fiber Layer of the Retinal Nerves in Spectral Domain Optical Coherence Tomography in Normal Eyes Older Than 40 Years.

Purpose: To compare measurements of the thickness of the retinal nerve fibre layer (RNFL) and assess the agreement between three different devices for spectral domain optical coherence tomography.

Material And Methods: The RNFL thickness of both eyes of 23 normal subjects older than 40 years was measured using Canon HS100, Topcon Maestro, and NIDEK RS-3000 devices. Both eyes of each subject were scanned in random order.

Severe COVID-19 and Retina: Are There Any Retinal Manifestations?

Purpose: To investigate whether there are retinal lesions associated with severe COVID-19.

Methods: We studied 232 symptomatic subjects aged 18 - 65 years who had severe COVID-19 and had received treatment. The evaluations included ophthalmological examinations, optical coherence tomography (OCT), imaging modalities with near infrared reflectance (NIR), fundus autofluorescence (FAF), and fundus photography (FP).

Corneal Parameters in Patients with Multiple Sclerosis: A Pilot Study.

Objective: To evaluate the corneal topographic parameter values measured with the Pentacam Scheimpflug system in patients with multiple sclerosis (MS).

Methods: A total of 108 eyes of 62 MS patients were studied. In addition to a complete examination of anterior and posterior segments, all patients were scanned using the Pentacam Scheimpflug camera.

Susceptibility of severe COVID-19 patients to rhino-orbital mucormycosis fungal infection in different clinical manifestations.

Purpose: To present the different clinical manifestations of rhino-orbital mucormycosis (ROM) co-infection in severe COVID-19 patients.

Study Design: Prospective observational clinical study METHODS: Among 32,814 patients hospitalized with the diagnosis of COVID-19 between March 2020 and December 2020 in our center, eleven microbiologically confirmed ROM co-infection cases in severe COVID-19 patients were evaluated.

Results: There were nine men and two women with a mean age of 73.

The Impacts of Face Mask Use on Standard Automated Perimetry Results in Glaucoma Patients.

Purpose: The coronavirus disease 2019 (COVID-19) spread rapidly worldwide, causing a severe outbreak. Because the disease is easily transmitted, face masks are a vital tool to slow the spread. The aim of this study is to investigate the impacts of face mask use on standard automated perimetry (SAP) results in glaucoma patients.

Ozurdex completely located inside a crystallized lens - Results of 14 months.

Purpose: To report the therapeutic efficacy and results of an accidentally injected intralenticular sustained-release dexamethasone implant (Ozurdex) in a patient with macular edema secondary to central retinal vein occlusion at 14 months after injection.

Observations: We present a 70-year-old female patient with central retinal vein occlusion who underwent an Ozurdex injection. Patient discontinued from the treatment period during the 14-month and there was no ophthalmologic examination of the patient.