Cataracts: It is caused by a cloudly and milky white lens in the eye. Keratoconus: It is caused if collagen holding the cornea in place becomes weak. Diabetic Retinopathy: It occurs as a result of prolonged high blood sugar. Macular Degeneration: It is the leading cause of blindness that may result if the macula damages. Refractive Errors: If the eye lens naturally gets aged, then this condition may develop. Glaucoma: If the eye’s optic nerve damages, then this condition develops. Presbyopia: If you have lost your ability to see close objects clearly, then it means you are suffering from Presbyopia. Floaters: If you are over the age of 50, then you may suffer from Floaters. Dry Eyes: It is caused if tear glands cannot make enough tears. Tearing: If your eyes are sensitive to light, then they can produce tears.