Hyperglycemia has a toxic effect on almost all cells in the body. Ocular complications due to hyperglycemia can occur in the cornea and retina. Retinal microvascular disorders in patients with type II DM are called diabetic retinopathy. Type II diabetes mellitus has a significant influence on the morphological, metabolic, physiological, and clinical aspects of the cornea that can be evaluated by measuring central corneal thickness (CCT) using Anterior Segment -Optical Coherence Tomography (AS-OCT). Morphological changes occur in corneal epithelium, epithelial basement membrane and basement, stromal and endothelial membrane complexes. CCT changes as changes in the retina of type II DM patients are chronic processes that lead to changes in the structure and biomechanics of the cornea and retina. Method: The subjects of this study consisted of 36 eyes of type II DM patients divided into 4 diabetic retinopathy groups (mild, moderate, severe NPDR and PDR) with GDS> 200mg / dl then CCT values were measured using thick (33.3%); thin (13.9%); ; very thick CCT (8.3%). There is no statistically significant relationship between the degree of CCT and severity of diabetic retinopathy. Conclusion: The CCT value of DM type II sufferers in the PDR group was higher than in the NPDR group, where there was an increase in CCT value along with an increase in severity of diabetic retinopathy, but the results were statistically not significant. CCT examination is expected to be one of the evaluations to evaluate the progression of hyperglycemic in type II DM against ocular disorders, especially cornea.