Consecutive optic atrophy occurs:(AIIMS May 2012)
|A||Following trauma to the optic nerve|
|B||In retinitis pigmentosa|
1. Consecutive optic atrophy: occurs secondary to retinal disease.
1. Retinitis. pigmentosa.
2. Retinal detachment
3. High myopia
5. Occlusion of the central retinal artery or vein
Primary or simple atrophy: In such case, disc is chalky white.
a. The stippling of the lamina cribrosa is seen.
b. Edges are sharply defined and surrounding retina is normal.
1st optic atrophy → chalky white disc
2nd optic atrophy – dirty grey white disc