This study investigate the change of the corneal endothelial cells in patients with type 2 diabetes after phacoemulsification with intraocular lens implantation.

The investigators do the clinical prospective study including 30 patients with type 2 diabetes and 30 control patients without diabetes scheduled to undergo cataract surgery. The corneal endothelial cell density, variation in endothelial cell size (CV), percentage of hexagonal cells, and central corneal thickness(CCT) were recorded at baseline and at 3 months postoperatively.Then, the investigators compared the two sets of data. At last observing the change of the corneal endothelial cells in patients with type 2 diabetes after phacoemulsification with intraocular lens implantation.

Inclusion Criteria:

the experimental group:

1. Clinical diagnosis of cataract
2. Type 2 diabetes mellitus
3. The recent blood glucose control was stable
4. The glycosylated hemoglobin < 8%

The control group:

1. Clinical diagnosis of cataract
2. No history of type 2 diabetes

Exclusion Criteria:

1. Corneal lesions
2. Anterior inflammation
3. Ocular trauma or surgical history
4. Glaucoma
5. Corneal endothelial cell density < 1500 / mm squared

Among the 60 patients enrolled in this study, the experimental group was 77.5 ±9.2 years old, and the control age was 76.3±8.7 years, with no statistical difference (P = 0.87). All patients were treated for 3 months.