Gradual peripheral vision loss, eye pain, blurred vision, or seeing colored halos around light sources can be signs of glaucoma.

Frequent squinting when looking far, leaning close to books, tilting the head while observing, or complaining of eye strain are potential signs a child may have vision problems.

An increased waistline, easy fatigue, poor sleep, aches, and forgetfulness may appear after age 40, but not all changes are due to aging.

Blurry vision and difficulty seeing at night after age 50 can sometimes be early signs of eye conditions requiring timely treatment, not just age-related changes.