Translate Here

Search By Google

Search This Blog

Share This With Your Friends

Wednesday, January 26, 2011

OPTIC ATROPHY

This refers to irreversible degeneration of the optic disc which develops remarkable pallor with reduction in number of capillaries below 7 against the normal 10 or more,
and the loss of substance of nerve head.
primary optic atrophy denotes occurrence of atrophy without previous opthalmoscopic evidence of papilledema/papillitis. It follows involvement of neurons proximal to the disk. Disk margins are well defined.

Secondary optic atrophy denotes occurrence of atrophy with previous evidence of papilledema/papillitis. It involves the choked disk. Disk margins are poorly defined.

Etiologic factors include intracranial tumors and traumatic, infalmmatory, vascular, and degenerative disorders. At times, progressive optic atrophy is hereditary.

No comments:

Post a Comment

If it is helpfull to Please Like This

Google+ Badge