The eye in systemic disease Flashcards
1
Q
Describe the pathogenesis of diabetic retinopathy
A
2
Q
what is proliferative retinopathy?
A
In this condition very small blood vessels grow from the surface of the retina.
The retina is the film at the back of your eye , and the tiny blood vessels are capillaries. These growing blood vessels are very delicate and bleed easily. Without laser treatment, the bleeding causes scar tissue that starts to shrink and pull the retina off, and the eye becomes blind. Laser treatment prevents blindness, but often some vision is lost.
3
Q
what do diabetic patients lose vision from?
A
- •retinal oedema affecting the fovea
- vitreous haemorrhage
- scarring/ tractional retinal detachment
4
Q
what are the signs of non-proliferative retinopathy?
A
- microaneurysms / dot + blot haemorrhages
- hard exudate
- cotton wool patches
- abnormalities of venous calibre
- Intra-retinal microvascular abnormailities
5
Q
What does this picture show?
A
proliferative retinopathy
6
Q
what are the features of hypertensive retinopathy?
A
- Attenuated blood vessels-copper or silver wiring
- cotton wool spots
- hard exudates
- retinal haemorrhage
- optic disc oedema
7
Q
A
