Retinitis pigmentosa Flashcards
1
Q
What is Retinitis pigmentosa?
A
It is a group of inherited conditions that that lead to progressive deterioration of photoreceptors and retinal pigment epithelium structureand function
2
Q
What are the symptoms of retinis pigmentosa?
A
- bilateral and symmetrical
- Night blindess
- Decreased VF leading to clumsiness
3
Q
What are the signs on fundoscopy regarding retinitis pigmentosa?
A
- irregular retinal pigment clumping which is first noticed mid-peripherally then centrally and peripherally
- The retinal pigment epithelial atrophy produces depigmentation between the areas of pigment clumping
- Retinal aterioles narrow due to optic atrophy
- pale optic disc eventually because of loss of nerve fibres
5.
4
Q
How do we diagnose retinis pigmentosa?
A
With a ERG-Electroretinogram
5
Q
What is ARMD(Age related Macular Degeneration?)
A
It is the most common untreatable cause of blindness in people above 60
6
Q
What are the risk factors for ARMD?
A
- Above 60 yrs
- Family Hx
- Environmental factors
- genes involved in inflammation
5.
7
Q
What is the classification of ARMD?
A
DRY or atrophic type-avascular degenerative changes
Wet or exudative type-subretinal neovascularisation
8
Q
What are the symptoms of
A
