Lens & Retina Disorders

Question 1

Condition of no lens, either congenital or acquired.

Answer 1

Aphakia

Question 2

Progressive loss of transparency of the lens of the eye.

Answer 2

Cataract

Question 3

Group of disorders characterized by abnormal ICP due to obstruction of the outflow of the aqueous humor. Chronic or primary open-angle glaucoma is characterized by an open anterior chamber angle. Angle-closure or narrow-angle glaucoma is characterized by an abnormally narrow anterior chamber angle.

Answer 3

Glaucoma

Question 4

Impairment of color vision. Inability to distinguish between certain colors because of abnormalities of the photopigments produced in the retina. Also called color blindness.

Answer 4

Achromatopsia

Question 5

Progressive destruction of the macula lutea, resulting in a loss of central vision. This is the most common visual disorder after the age of 75.

Answer 5

Age-related macular degeneration (ARMD or AMD)

Question 6

Damage of the retina due to diabetes; the leading cause of blindness. Classified according to stages from mild, nonproliferation diabetic retinopathy (NPDR) to proliferative diabetic retinopathy (PDR).

Answer 6

Diabetic Retinopathy

Question 7

Loss of half the visual field (VF), often as the result of a cerebrovascular accident (CVA).

Answer 7

Hemianopsia

Question 8

Inability to see well in dim light. May be due to a vitamin A deficiency, retinitis pigmentosa, cataract, or choroidoretinitis.

Answer 8

Nyctalopia

Question 9

Separation of the retina from the choroid layer. May be due to trauma, inflammation of the interior of the eye, or aging. A hole in the retina allows fluid from the vitreous humor to leak between the two layers.

Answer 9

Retinal Tear, Retinal Detachment

Question 10

Hereditary, degenerative disease marked by nyctalopia and a progressive loss of the visual field (VF).

Answer 10

Retinitis pigmentosa

Question 11

Area of decreased vision in the visual field (VF). Commonly called a blind spot.

Answer 11

Scotoma