In which of the following, retina is not affected?
Correct Answer: Primary optic-atrophy
Description: Retina is not involved in primary optic atrophy. Optic atrophy is the condition of disc when the optic nerve is degenerated. Optic atrophy is of two types: Primary atrophy and secondary atrophy. Primary optic atrophy: It is due to disease or poisoning of second visual neurons proximal to the disc evidence of local inflammation. Clinical Features of Primary optic atrophy: The disc is grey or white. Stippling of the lamina cribrosa is seen, edges are sharply defined and surrounding retina looks normal. Tabes is the classical cause of primary atrophy. Secondary optic atrophy follows any injury or direct pressure, affecting the visual fibre in any pa of their course from the lamina cribrosa to the geniculate body. In consecutive optic atrophy retina is involved. causes like retinitis pigmentosa myopia central retinal aery occlusion
Category:
Ophthalmology
Get More
Subject Mock Tests
Practice with over 200,000 questions from various medical subjects and improve your knowledge.
Attempt a mock test nowMock Exam
Take an exam with 100 random questions selected from all subjects to test your knowledge.
Coming SoonGet More
Subject Mock Tests
Try practicing mock tests with over 200,000 questions from various medical subjects.
Attempt a mock test now