الفهرس 
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Abstract
Summary
Phcoemulsification affects central corneal thickness as there is a significant corneal edema after phaco which resolve gradually but delay in recovery of corneal edema after phaco in diabetic group more than non diabetic group.
Our study included 20 patients ,10 patients of non diabetic group 7 cases (70.0 %) were male and 3 cases (30.0%) were female and 10 diabetic without retinopathy group 6 casses (60.0%) were male and 4 cases (40.0%) were female.
Their age ranged from 18 to 60 years, with mean age of 56.50 +/-2.22 years in non diabetic group, 55.70 +/-3.13 years in diabetic without retinopathy group.
In non diabetic group ,the mean average of CCT is 500.80 +/-23.73μm before phaco, 508.90 +/-28.33μm after 0ne week after phaco and 501.10 +/-24.33μm after one month after phaco.
In diabetic without retinopathy group, the mean average of CCT is 508.50 +/-6.75μm before phaco ,535.20 +/-16.98μm after one week after phaco and 527.60 +/-16.63μm after one month after phaco.
Several studies have revealed a significant change in central corneal thickness after phacoemulsification.
The recovery of corneal edema after phaco may be delayed in the cornea of diabetic patients, as the corneal thickness will not have returned to the preoperative level 1 month after surgery.
In our study, we also found a significant change in CCT after phaco in both diabetic and non diabetic groups .The significant increase in CCT after phaco due to corneal edema which recover gradually.
We also noticed that eyes of patients with diabetes mellitus showed delay in the postoperative recovery of corneal edema compared with non diabetic eyes as we noticed CCT after one month after phaco .
patients with diabetes have significantly more endothelial damage so more corneal edema in comparison to nondiabetic controls with similar nuclear grading and phaco energy used. This warrants a more careful use of phaco energy in patient with diabetes.