The ability of the eye to focus and maintain a clear image as objects are moved closer. The ciliary muscles of the eye contract and the zonules relax, causing the flexible crystalline lens to "round up" and increase its optical power.
When a person ages and begins to lose accommodation, it is referred to as presbyopia .
The EyeCyclopedia is a collection of eye care terminology created by
practicing optometrists and ophthalmologists. The information provided is not intended
to be a substitute for regular medical care or to diagnose or treat
any medical condition, and should be used only as a supplemental source of information.
Please consult your doctor if you have any questions or concerns about your eye health.