In which of the following, retina is not affected?(LQ)
|D||Consecutive optic atrophy|
1. Optic atrophy is the condition of disc when the optic nerve is degenerated.
2. Optic atrophy is of two types: Primary atrophy and secondary atrophy.
3. Primary optic atrophy: It is due to disease of second visual neuron proximal to the disc. No evidence of local inflammation.
4. Clinical Features of Primary optic atrophy:
a. The disc is chalky white.
b. Stippling of the lamina cribrosa is seen, edges are sharply defined and surrounding retina looks normal.
c. Tabes dorsalit is the classical cause of primary atrophy.