Retinitis Pigmentosa Flashcards
1
Q
What is retinitis pigmentosa?
A
Congenital inherited condition where there is degeneration of the rods and cones in the retina
2
Q
Cause of retinitis pigmentosa?
A
Genetic
Isolated retinitis pigmentosa
Others result in systemic diseases
3
Q
Which retinal cells degenerate more?
A
Rods more than cones
|
This leads to night blindness & decreased central & peripheral vision
4
Q
Presentation of retinitis pigmentosa?
A
Varies on underlying causes
- Night blindness (often 1st symptom)
- Peripheral vision lost before central vision
5
Q
Investigation of retinitis pigmentosa?
A
Fundoscopy: Will show- -Pigmentation -Associated narrowing or arterioles -Waxy/pale appearance of optic disc
6
Q
Associated systemic disease with retinitis pigmnetosa?
A
Usher’s syndrome
Bassen-Kornzwerg syndrome
Refsum’s disease
7
Q
What does Usher’s syndrome cause?
A
Hearing loss + retinitis pigmentosa
8
Q
General management of Retinitis Pigmentosa?
A
- Refer
- Genetic counselling
- Vision aids
- Driving limitations
- Informing DVLA
- Regular follow ups
9
Q
Possible management options to consider for retinitis pigmentosa?
A
- Vitamin antioxidant supplements
- Oral acetazolamide
- Topical dorzolamide
- Steroid injections
- Anti-VEGF injections
