What term describes the condition in which the lens of one or both eyes is missing?

What term describes the condition in which the lens of one or both eyes is missing?

• A. Aphakia
• B. Microphthalmia
• C. Anophthalmia
• D. Astigmatism

Answer: (A)

Aphakia is the absence of the eye's natural lens. Without the lens, the eye loses a key focusing structure, which can blur vision and affect depth perception. Aphakia can be present from birth or occur after surgery that removes the lens, such as cataract removal. By contrast, microphthalmia means the eyeball itself is abnormally small; anophthalmia means the eye globe is entirely missing; and astigmatism is a refractive error from an irregular cornea or lens shape, not from the lens being absent.

Aphakia is the absence of the eye's natural lens. Without the lens, the eye loses a key focusing structure, which can blur vision and affect depth perception. Aphakia can be present from birth or occur after surgery that removes the lens, such as cataract removal. By contrast, microphthalmia means the eyeball itself is abnormally small; anophthalmia means the eye globe is entirely missing; and astigmatism is a refractive error from an irregular cornea or lens shape, not from the lens being absent.