In presbyopia, the lens thickens and loses its flexibility, and the
eye cannot focus on a near object. Light entering the eye is focused (focal
point) behind the retina instead of on the retina. This causes blurred vision.
ByHealthwise Staff Primary Medical ReviewerKathleen Romito, MD - Family Medicine Specialist Medical ReviewerChristopher J. Rudnisky, MD, MPH, FRCSC - Ophthalmology