That is one eye is made best for distance and one eye is left slightly nearsighted for reading. In all these procedures, some patients experience glare or halos around lights at night. An optometrist last name is followed by O.D., and he is trained to examine the eye in detail and prescribe glasses and in some states, some eye drops for medical problems. An Optician sells glasses. . . An ophthalmologist is an M.D., or an osteopath and is trained to treat the patient for glasses, medical problems and performs eye surgery.
Cataracts are when the lens of the eye becomes hazy.
It is a normal aging process in all patients. Most patients have some degree of cataract at age 60. The average age for cataract extraction is 72. However, it occurs in patients even in their 20's. In all patients there is a lost of elasticity of the lens of the eye that starts about age 7 and goes to age 70 which makes it difficult to read without glasses after about age 40.