Common Eye Disorders Practice Test

Misalignment of the eyes such that the two eyes do not move together is called strabismus. This occurs when the eye muscles or the nerves that control them are not balanced, so the visual axes fail to align on the same target. As a result, the eyes may point in different directions, leading to diplopia or suppression of one eye to avoid double vision, especially in children where it can cause amblyopia if not addressed. The other conditions involve different problems: scleritis is inflammation of the sclera with eye pain and redness; hypertensive retinopathy refers to retinal changes due to high blood pressure; age-related macular degeneration affects central vision from degeneration of the macula. The defining feature here is the eyes not moving together, which is strabismus.