May kidney failure affect the eyes of a patient with diabetes mellitus 2?!

Not necessarily: Diabetes can certainly affect the eye causing diabetic retinopathy. If someone has renal failure due to diabetes it is very likely they also have retinopathy. Kidney failure may affect blood pressure, which may have an affect on the eyes. It is very important to control blood sugar and blood pressure when diabetic to minimize chance of complications/diabetic retinopathy.

Not directly, but..: Diabetes mellitus of either type is a serious disease that if not properly controlled, damages the blood vessels of the body. It commonly affects the eyes (and can blind a person), heart, kidneys, brain, and legs/feet. If a patient has kidney failure due to dm2, then it's likely that the diabetes has also affected the eyes. The diabetes must be controlled to stop the damage- c endocrinologist.