What does photophobia indicate?

Photophobia refers to an abnormal sensitivity to light. Individuals who experience photophobia may feel discomfort or pain in bright light conditions, leading them to seek dim environments or wear sunglasses even indoors. This condition can be associated with various medical issues, such as migraines, eye infections, or certain neurological conditions.

In contrast, color blindness pertains specifically to the inability to distinguish between certain colors and does not involve sensitivity to light. Night blindness relates to difficulty seeing in low light or darkness, which is a different visual impairment entirely. Visual acuity loss indicates a decrease in the sharpness or clarity of vision, which is a separate issue from light sensitivity. Thus, photophobia is precisely characterized by its association with sensitivity to light.