الفهرس 
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Abstract
OCT has been established as a practical method for examining retinal architecture. With its noninvasive nature, has been proven to be an indispensable tool for diagnosing retinal pathologies including CME. Many studies have reported the frequency of CME and macular thickness changes determined by OCT following uneventful cataract surgeries . Moreover, this study evaluating the influence of risk factor of intraoperative complications such as rupture posterior capsule on the postoperative course of macular thickness.
Cataract surgery has been evolved tremendously over the past several decades, from large-incision intracapsular cataract extraction to small-incision extracapsular phacoemulsification. Despite surgical improvements, Cystoid macular edema (CME) remains an important cause limiting favorable visual outcomes following cataract surgery.
Although incidence of CME decreased within the small-incision phacoemulsification era, it has been reported that the incidence of CME (affecting visual outcome) after small-incision uneventful cataract surgery is between 0% and 9% .
Proposed causative factors for development of CME following cataract surgery includes surgical trauma (especially to the iris), postoperative inflammation, and tractional forces on macula .
The uncomplicated cataract surgery with intraocular lens implantation in-the-bag is not supposed to cause aforementioned factors. However, complicated cataract surgery (with posterior capsular tear) could be closely involved with proposed mechanisms, but little studies have evaluated macular thickness and volume determined by OCT following complicated cataract surgery.
We found that, macular thickness was significantly higher after cataract surgeries with posterior capsular tear than the uneventful surgeries and the frequency of CME was significantly higher after cataract surgeries with posterior capsular tear than the unevetiful surgeries as 6.9 % of the total studied cases developed macular thickening ( 5.6% for healthy, 9.1% for diabetics and the mean total 6.9%), this Number was significantly rise in complicated cataract to reach 42.4%. These higher numbers may be attributed to including of diabetic eyes and eyes which needed extra manipulations (incidence was 27.8% of complicated healthy, 50% of complicated diabetic, 80% of complicated group with AC IOL and the mean total complicated 42.4%).
We also found the postoperative macular thickening was non significantly higher in the uncomplicated diabetic group than uncomplicated healthy. However the postoperative macular thickening was significantly higher in the complicated diabetic group. Indicating that diabetes did not influence significantly the thickening of the macular regions after uncomplicated cataract surgery but it has a significant influence after complicated cataract surgery.