Please let me know if there is any difference between diabetic retinopathy and hypertensive retinopathy?

Yes, big difference. Aside from being caused by 2 separate diseases, eye manifestations are distinct as well. Hypertensive eye changes occur from chronic affect of high pressure on the small arterioles in eye tissues, may lead to vascular occlusion. Diabetic eye disease affects the smaller capillary vessels, causing leakage and/or blockage of blood. If advanced, diabetic disease may require laser treatment or surgery.

Related Questions

How can eye specialists determine the difference between diabetic and hypertensive retinopathy?

Exam and testing. Dilated fundus exam--diabetic and hypertensive retinopathy typically have different appearances, however they can appear similar with bleeding and ischemic areas of the retina. Areas requiring treatment to save vision (other than improving the underlying disease) can be found using imaging and angiogram diagnostic tests. Read more...
See below. Though they can sometimes look similar, an eye doctor (especially a retina specialist), can tell the difference by doing a dilated retinal exam sometimes also with ancillary testing like Fluorescein angiography and optical coherence tomography. Read more...