الفهرس 
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Abstract
Summary
Dry eye is described as a multifactorial disorder of the tear film that occurs due to excessive tear evaporation or tears insufficiency, and so leads to ocular discomfort sensation and ocular tissue damage with time. Many studies reported that Age, gender, and weather are considered as important factors that influence the prevalence of dry eye. Dry eye is associated with some ocular and systemic diseases, also its symptoms are aggravated by topical and systemic drugs. It has a high prevalence over the past few years due to overusing contact lens, computers and a greater number of laser surgeries.
Cataract surgery is another factor that contributes to increasing dry eye prevalence. Many studies discussed how cataract surgeries and their incision can influence on the incidence of dry eye postoperatively. The microscopic light exposure is a contributory factor that affects the tear film stability and developing dry eye after the surgery as reported by some studies.
The aim of this study was to assess the incidence of dry eye disease after uncomplicated phacoemulsification surgery at patients with no pre-existed dry eye.This hospital-based cross-sectional study was conducted to assess the incidence of dry eye at 50 eyes of 50 patients who underwent uncomplicated phacoemulsification surgery, with age more than 40 years old. It is measured by dry eye tests ST1, TBUT, and OSDI questionnaire.
This study showed that 22% of the patients who underwent uncomplicated phacoemulsification surgery suffered from dry eye with significant results at 1st week post-operative that improved over time. Also, it showed a significant association between microscopic light
exposure time(during surgery) and increasing the incidence of dry eye postoperatively.