When a person first experiences presbyopia, the symptoms may become exaggerated if he or she is overly tired, in dim light or has consumed alcohol. Some medications may initiate and increase the symptoms of presbyopia at an earlier age. When the glare from oncoming headlights when driving at night becomes bothersome, a developing cataract may be the cause. Cataracts can disperse light entering the eye to make headlights appear surrounded by a halo or with rays of light extending from the center. Sometimes the cataract will scatter light so that the image of the headlights appears double.
Cataracts are a normal development in the aging eye.
Having cataracts ordinarily does not require surgery until it has reached a stage where it significantly interferes with a person's visual tasks. Other causes of glare include glaucoma and certain abnormalities that affect the clarity of the structures within the eye through which light passes. An examination by an eye doctor can determine these abnormalities. I sometimes see spots floating in front of my vision. Floaters are caused by the condensation of vitreous fibers or sometimes blood cells that occur when the vitreous separates from the retina.