Vision specialists reveal why eyesight tends to worsen more rapidly after age 40.

A Harvard-trained vision researcher discovered a silent internal process that may be linked to blurry vision, excessive glare, and reading difficulties — even in people who previously had sharp eyesight.

After more than two decades studying eye health, researchers began noticing a surprising pattern. While some people maintain visual acuity well into their third age, others experience gradual changes that standard eye exams rarely explain.

A brief presentation now details what they discovered.

Understand why your eyesight feels like it's slipping faster than it should