PURPOSE: To determine the prevalence of dry eye disease (DED) in a tertiary ophthalmic outpatient hospital based clinic in southern Egypt. METHODS: A cross-sectional observational hospital-based study of 3128 subjects was conducted at the Ophthalmology out-patient clinic of the Sohag University Hospital, Egypt, between January 2011 and August 2013. The participants comprised adult ophthalmic outpatients aged 18 years or older. ... Read more

PURPOSE: To evaluate the efficacy and safety of LASIK in thick corneas ≥ 600µm. METHODS: 96 eyes were followed after LASIK for postoperative UCVA, CDVA and SE. RESULTS: 42 myopic eyes and 54 hyperopic eyes were included. The postoperative SE at 6 month follow-up was -0.45 ±0.6 in myopes and +0.7 ±1.01 in hyperopes. In myopes, 95.8% achieved UCVA≥20/20 and ... Read more

Abstract The study aimed to determine mean central corneal thickness (CCT) in a southern Egyptian population according to gender and age using ultrasonic pachymetry and to compare these CCT measurements to different populations. A prospective, observational, consecutive case series of 4,368 nonglaucomatous subjects (emmetropes and myopes) aged 16–70 years was carried out from August 2010 to March 2013 at the ... Read more

Purpose: To assess the visual outcome and refractive error following wavefront-optimized (WFO) laser in situ keratomileusis (LASIK) retreatment after previous wavefront-guided (WFG) LASIK in myopic patients. Methods: A retrospective analysis of 19 eyes (14 patients) following WFO LASIK retreatment after previous WFG LASIK that did not give desired refractive results was conducted. The primary LASIK procedures were performed using the ... Read more

PURPOSE: To evaluate the relationship between the thinnest point of the cornea and the refractive state, keratometry readings, age, sex and ocular side. METHODS: Medical records of 1035 subjects who underwent preoperative examination at our laser refractive center ( Sohag city, Egypt) were retroscpectively reviewed from January 2010 to December 2010. Patients' age, sex, central corneal thickness (CCT), refractive status ... Read more

PURPOSE: We compared Scheimpflug anterior segment changes between 3 piece and aspheric 1-piece intraocular lens (IOLs) after uneventful phacoemulsification and implantation and assessed the impact of these changes on the postoperative intraocular pressure and refraction stability. METHODS: This prospective randomized comparative study included 76 phacoemulsification-treated eyes with senile cataracts. The eyes were randomized into 2 equal groups according to the ... Read more

Purpose: To evaluate the effect of excess meibum on tear evaporation rate in patients with and without dry eye. Methods: Eleven healthy subjects and 16 patients with dry eye were tested. The dry eye group was divided into 2 subgroups: classic keratoconjunctivitis sicca (KCS) with clear and easily expressed meibum and KCS with meibomian gland dysfunction (MGD) with turbid secretions ... Read more

Purpose: To evaluate the efficacy, predictability, safety, and intraoperative and postoperative complications of laser in situ keratomileusis (LASIK) retreatment in myopic eyes using wavefront-guided ablation with iris registration (IR). Methods: Retrospective analysis was used to evaluate wavefront-guided retreatment with IR in a consecutive cohort of 77 eyes (57 patients) after LASIK. The eyes were divided into two groups: no previous ... Read more

Objective: To evaluate the safety and efficacy of excimer laser refractive surgery in correcting refractive error in eyes that have undergone previous penetrating keratoplasty (PK). Methods: Twenty-three keratorefractive procedures on 16 eyes from 16 consecutive subjects were evaluated between 2002 and 2008. Each patient presented a previous history of a PK with subsequent postoperative myopia and astigmatism. Keratometric value, manifest ... Read more

Purpose: To investigate the association among central corneal thickness, peripheral corneal thickness (PCT), and wavefront aberrations in the anterior cornea, posterior cornea and the whole eye in myopia. Methods: Sixty-four eyes of 64 myopic subjects were evaluated with a Pentacam rotating Scheimpflug camera (Oculus, Inc., WA) corneal topographer for: (1) wavefront aberrations from the anterior and posterior corneal surface, (2) ... Read more