Introduction

Dry eye syndrome, compromises visual quality and may lead to suboptimal refractive outcomes after cataract or corneal refractive surgery.Phacoemulsification significantly alters the tear break-up time, corneal fluorescein staining, tear film pattern and the height of tear meniscus. Some patients with normal tear film may experience dry eyepostphaco. The dry eye syndrome can reduce the accuracy of measurements for cataract surgery and may eventually lead to inaccurate IOL calculations. Cataract patients with concomitant DED merit special consideration to prevent worsening existing symptoms and making asymptomatic disease symptomatic. In addition, patients with DED must be properly informed of the risks of dry eye associated with cataract surgery-namely, visual fluctuations and blur. These side effects can cause patients' dissatisfaction postoperatively, especially those who receive multifocal IOLs. It may cause inaccurate axis and magnitude of astigmatism.
AIM OF THE WORK
The aim of this study is comparing dry eye disease symptoms and signs in post cataract surgery patients with and without pre-existing dry eye disease