No abstract

Purpose The aim of this study was to investigate the ocular findings observed in patients with COVID‐19 caused by SARS‐CoV‐2 and to present the relationship between ocular involvement and systemic findings and laboratory results. Material and Methods This cross‐sectional study was carried out between 1 May and 30 June 2020. The study included 359 patients diagnosed with COVID‐19 and assessed by clinical evaluation, nasopharyngeal polymerase chain reaction, and lung computed tomography. Results One hundred and ninety‐seven (54.9%) of the patients were male and 162 (45.1%) were female. The mean age of the patients was 58.5 years (20–91). Two hundred and ninety‐four (81.9%) patients were treated in the inpatient clinic and 65 (18.1%) patients were treated in the intensive care unit. Various ocular diseases were observed in 16 (4.5%) of the patients. While the rate of ocular disease was 12/294 (4.1%) in patients followed up in the inpatient clinic, this rate was 4/65 (6.2%) in intensive care patients. There was no systemic problem in one patient, in whom conjunctival hyperemia was the first and only reason for admission to the hospital. Four patients followed up in the inpatient clinic had conjunctivitis at the time of admission, and conjunctivitis occurred in three patients during hospitalization. Subconjunctival hemorrhage occurred in five patients and vitreous hemorrhage in one patient. Conclusion Ocular diseases are uncommon in COVID‐19 patients but may occur during the first period of the disease or during follow‐up. Ocular diseases may be the initial or only sign of COVID‐19 infection. This article is protected by copyright. All rights reserved.

Uncorrected IOP, corrected IOP, CCT, and CV values decreased after HD, whereas the anterior chamber morphometry values remained similar between the measurements performed before and after HD.

The maximum K value, most topometric indices, and ectasia display indices were repeatable and reliable in normal eyes and keratoconic eyes.

In pediatric patients with keratoconus, cone location and the baseline thinnest corneal thickness seem to affect the success rate of CXL treatment after 2-year follow-up.

Objectives: To evaluate the longitudinal tomographic changes and to compare the discriminatory potential of a novel progression display between progressive and nonprogressive keratoconic eyes. Methods: Retrospective evaluation was made of 81 eyes of 81 patients with keratoconus who had undergone Scheimpflug measurements at least twice with an interval of 12 months or longer between each measurement. The progressive group was defined as 36 eyes, which showed progression according to the definition of the global consensus on keratoconus and ectatic diseases when 2 of the 3 criteria were met, and the other 45 eyes were considered the nonprogressive group. The main outcome measures from progression display were “A” for anterior radius of curvature, “B” for posterior radius of curvature, “C” for thinnest pachymetry, “D” for distance visual acuity; Kmax; Q-value front and back; index of surface variance (ISV), vertical asymmetry, height asymmetry, and height decentration; overall deviation of normality (final D); average pachymetric progression index; and maximum Ambrósio relational thickness. Results: The rate of change per year of A, B, C, thinnest pachymetry, Kmax, final D, and ISV was significantly different between groups (P≤0.01 for all values). It was determined that yearly change rates greater than 0.12 for A, 0.14 for B, 10.04 μm for thinnest pachymetry, 0.68 D for Kmax, 0.15 for final D, and 2.11 for ISV might indicate progression in keratoconus management. Conclusions: Belin progression display parameters may be useful in discriminating progressive from nonprogressive keratoconic eyes.

Objective. To investigate the biomechanical characteristics of the cornea in patients with mitral valve prolapse (MVP) and the prevalence of keratoconus (KC) in MVP. Materials and Methods. Fifty-two patients with MVP, 39 patients with KC, and 45 control individuals were recruited in this study. All the participants underwent ophthalmologic examination, corneal analysis with the Sirius system (CSO), and the corneal biomechanical evaluation with Reichert ocular response analyzer (ORA). Results. KC was found in six eyes of four patients (5.7%) and suspect KC in eight eyes of five patients (7.7%) in the MVP group. KC was found in one eye of one patient (1.1%) in the control group (P = 0.035). A significant difference occurred in the mean CH and CRF between the MVP and control groups (P = 0.006 and P = 0.009, resp.). All corneal biomechanical and topographical parameters except IOPcc were significantly different between the KC-MVP groups (P < 0.05). Conclusions. KC prevalence is higher than control individuals in MVP patients and the biomechanical properties of the cornea are altered in patients with MVP. These findings should be considered when the MVP patients are evaluated before refractive surgery.

Our results reveal that fasting during Ramadan does not profoundly affect corneal biomechanics and IOP values in healthy volunteers without ocular diseases such as glaucoma. When planning corneal refractive surgery and determining IOP, the ORA measurements can be done safely during a Ramadan fast. Moreover, ORA may be a better alternative for patients that refuse IOP measurement via GAT for examining the accuracy of IOP during fasting. Further studies are needed to better understand the role of these parameters on corneal disease and glaucoma during fasting.