Presbyopia is a condition where the
eye exhibits a progressively diminished ability to focus on near objects with age. Presbyopia’s exact mechanisms are not known with certainty; the research evidence most strongly supports a loss of elasticity of the
crystalline lens, although changes in the lens’s curvature from continual growth and loss of power of the
ciliary muscles (the muscles that bend and straighten the lens) have also been postulated as its cause. Like gray hair and wrinkles, presbyopia is a symptom caused by the natural course of
ageing. The first signs of presbyopia – eyestrain, difficulty seeing in dim light, problems focusing on small objects and/or fine print – are usually first noticed between the ages of 40 and 50.
Only with a comprehensive eye exams can we determine the best corrective lenses. Drugstore glasses make the assumption that both eyes are equal in power and that you do not have astigmatism.
