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Signs and Symptoms of astigmatism:
Astigmatism prevents the eye from forming a sharp focus, so astigmatism is usually associated with some blur at both distance and near. Headaches , eye discomfort, and a tendency to avoid reading and other prolonged close work are also often associated with astigmatism.
Cataracts can swell and cause a secondary glaucoma and permanent, irreversible damage to the optic nerve. When the advance of a cataract causes your lens-corrected vision to interfere with your normal life, or if the cataract reaches a point at which secondary damage is imminent, an ophthalmic surgeon can remove the lens of the affected eye and replace it with an artificial lens. These artificial lenses are called implants, and they are highly successful in restoring useful vision. When your optometrist diagnoses a cataract form, he will tell you about it and either refer you to an ophthalmic surgeon or recommend re-evaluation at a later time so that the growth of the cataract can be measured and monitored.