How can you tell the difference between hypertensive and diabetic retinopathy?
Diabetic retinopathy is caused by high blood sugar. Hypertensive retinopathy is caused by high blood pressure. Both conditions are diagnosed by an eye doctor. Treatment options may include surgery, laser treatments, or eye injections.
What is Bonnet sign in hypertensive retinopathy?
The following are signs of hypertensive retinopathy. AV Crossing Changes. Salus’s sign: Deflection of retinal vein as it crosses the arteriole. Gunn’s sign: Tapering of the retinal vein on either side of the AV crossing. Bonnet’s sign: Banking of the retinal vein distal to the AV crossing.
Are flame hemorrhages seen in hypertensive retinopathy?
Hypertensive retinopathy is characterized by generalized and focal arteriolar narrowing, flame- and blot-shaped retinal hemorrhages, arteriovenous nicking, optic disc swelling, and cotton-wool spots.
Is there AV nicking in diabetic retinopathy?
Diabetic retinopathy can present with similar findings and should be on the differential, especially in a patient with known diabetes. However, it usually lacks classic signs of AV nicking and arteriolar narrowing.
How do you classify diabetic retinopathy?
Diabetic retinopathy falls into two main classes: nonproliferative and proliferative. The word “proliferative” refers to whether or not there is neovascularization (abnormal blood vessel growth) in the retinaEarly disease without neovascularization is called nonproliferative diabetic retinopathy (NPDR).
What does AV nicking indicate?
Retinal arteriovenous nicking (AV nicking) is the phenomenon where the venule is compressed or decreases in its caliber at both sides of an arteriovenous crossing. Recent research suggests that retinal AVN is associated with hypertension and cardiovascular diseases such as stroke.
What is cotton-wool spots?
Cotton-wool spots (CWSs) are common retinal manifestations of many diseases including diabetes mellitus, systemic hypertension, and acquired immunodeficiency syndrome. Clinically they appear as whitish, fluffy patches on the retina and eventually fade with time.
What is Kimmelstiel-Wilson lesion?
This is nodular glomerulosclerosis (the Kimmelstiel-Wilson lesion) of diabetes mellitus. Nodules of pink hyaline material form in regions of glomerular capillary loops in the glomerulus. This is due to a marked increase in mesangial matrix from damage as a result of non-enzymatic glycosylation of proteins.
Does diabetes cause cotton-wool spots?
Diabetes is the most common cause of cotton-wool spots. The presence of more than eight cotton-wool spots has been associated with a higher risk of the more severe form of diabetic retinopathy known as proliferative diabetic retinopathy.
What is AV nicking in hypertensive retinopathy?
Arteriovenous nicking describes narrowing of a venule as an arteriole crosses over it. Increased arteriolar light reflex refers to an increased light reflex from the central portion of the retinal arteriolar surface (Figures 1 and 2).
What is AV nicking in hypertension?
What is glaucomatous cupping?
Glaucoma is caused by high pressure in the eye damaging the optic nerve, which results in loss of individual nerve cells. This causes a subsequent increase in the size of the cup, also called cupping.
Which ACE inhibitor is best for diabetic nephropathy?
Captopril is the only FDA-approved ACE inhibitor for diabetic nephropathy although other ACE inhibitors may be as effective. Several studies demonstrated that lisinopril is effective in the reducing urinary albumin excretion in diabetes[2].
What is the difference between hypertensive and diabetic retinopathy?
While both cause damage to the retina, they have different causes. 1 Hypertensive retinopathy is caused by hypertension (high blood pressure), while diabetic retinopathy is caused by diabetes (high blood sugar). In this article, you will learn about how symptoms for each condition are different.
What is hypertensive retinopathy and how is it treated?
Hypertensive retinopathy is a condition in which there are changes in the retina due to high blood pressure. In a normal eye, the retinal arteries are able to hold their own shape even if there are changes in systemic blood pressure. However when this pressure exceeds 140/110 mmHg, they are unable to control it.
What is the role of retinal hyperperfusion in diabetic retinopathy?
Role of retinal hyperperfusion in diabetic retinopathy. Retinal hyperperfusion is a key source of injury in diabetic retinopathy associated with shearing damage to capillaries. Increased retinal blood flow is found with conditions that worsen diabetic retinopathy; these include hypertension, hyperglycaemia, pregnancy, and autonomic neuropathy.
Are hypertensive retinopathy signs associated with cholesterol and blood pressure?
New population-based studies show that hypertensive retinopathy signs are strongly associated with blood pressure, but inconsistently associated with cholesterol and other risk factors of atherosclerosis.