Which term refers to the condition of sensitivity to light?

• A. Photophobia
• B. Nyctalopia
• C. Hemeralopia
• D. Scotoma

Answer: (A)

The term that refers to the condition of sensitivity to light is "photophobia." This term is derived from the Greek words "photo," meaning light, and "phobia," meaning fear or aversion. Individuals who experience photophobia often find bright lights uncomfortable and may squint or seek darker environments to alleviate discomfort. This sensitivity can occur in various conditions, such as migraines, certain eye diseases, or neurological disorders.

The other terms listed have distinct meanings: "nyctalopia" refers to difficulty seeing in low light or darkness, often associated with night blindness; "hemeralopia" is the inability to see well in bright light; and "scotoma" describes an area of partial or complete loss of vision surrounded by a field of normal vision. Understanding these differences highlights why photophobia is specifically defined as a sensitivity or aversion to light.