Gradual Loss Of Vision

Question 1

What is retinitis pigmentosa?

Answer 1

A clinically and genetically diverse group of inherited diffuse retinal degenerative diseases intially predominantly affecting the rod photoreceptors

Question 2

What is the classic trilogy of Retinitis Pigmentosa?

Answer 2

1) Bone-spicule pigmentary retinopathy
2) Arteriolar narrowing
3) Waxy pale disc

Question 3

Define blindness.

Answer 3

Blindness is visual acuity of less than 3/60 or a corresponding visual field loss to less than 10 degrees around central fixation, in the better eye with the best possible correction.

Question 4

What is visual impairment?

Answer 4

Refers to a visual acuity worse than 6/18 in the better eye.

Question 5

What are some ocular causes of gradual loss of vision?

Answer 5

1) Refractive Error
2) Media Opacities
3) Retinal disorders
4) Optic Nerve head damage

Question 6

Non-ocular causes of gradual loss of vision are usually?

Answer 6

Neurologic and visual pathways disorders

Question 7

Primary Optic Atrophy occurs:

Answer 7

without an antecedent swelling of the optic nerve head

Question 8

Examples of reversible causes of gradual loss of vision include:

Answer 8

1) Refractive Error
2) Corneal Blindness
3) Cataract
4) Diabetic Macular Edema