Distribution of angle lambda and pupil offset as measured by combined Placido Scheimpflug Topography.

Background: Angle lambda is the angle between the pupillary axis and the line of sight. It is important for accurate centration during anterior segment surgery. The purpose of this study is to identify the distribution of angle lambda and pupil center offset as measured by a combined placido disc Scheimpflug topography system.

Effect of facemasks on the tear film during the COVID-19 pandemic.

Purpose: To evaluate the effect of wearing facemasks on dry eye symptoms and on the tear film while comparing surgical face masks to N95 particulate respirators.

Methods: A prospective observational study was conducted at Ain Shams University Hospitals in the period from September 2020 to January 2021. Two hundred volunteers were recruited, and the daily number of hours spent by each participant wearing a facemask was recorded.

Trabeculectomy with OloGen versus Mitomycin C for the Treatment of Silicone Oil-Induced Glaucoma.

Aim: To compare the intraocular pressure-lowering effect and success rate of trabeculectomy with OloGen to that of trabeculectomy with mitomycin C (MMC) in cases of silicone oil-induced glaucoma.

Materials And Methods: Forty eyes of forty patients with elevated intraocular pressure (IOP) after vitrectomy and silicone oil injection (followed by silicone oil removal) were assigned to two groups. Group A included 20 cases who underwent trabeculectomy with OloGen, while group B cases contained 20 cases undergoing trabeculectomy with MMC.

Comparison Between Central Choroidal Thickness in Pregnant Diabetic Females and Pregnant Non-Diabetic Females.

Objective: To compare choroidal thickness in pregnant women with and without diabetes mellitus (DM).

Methods: Sixty pregnant females (60 eyes) were enrolled in this cross-sectional controlled study. They were divided into two groups: Group A (30 patients; 30 eyes) were pregestational diabetic pregnant females, while Group B (30 patients; 30 eyes) were non-diabetic pregnant females.

Repeatability and Interchangeability of Topometric, Anterior Chamber and Corneal Wavefront Data Between Two Scheimpflug Camera Devices.

Purpose: This study aims to assess the intra-operator repeatability and correlation of the Pentacam HR (device 1) and Sirius (device 2) in measuring anterior segment parameters and to evaluate the agreement of their readings and therefore their interchangeability in a clinical setting.

Methods: This is a prospective non-randomized study was conducted on the right eyes of 102 subjects coming to Eye World Hospital, Giza, Egypt. With each machine, four scans were taken by a single examiner.