Myopia or "nearsightedness" is that dioptric condition of the eye in which parallel rays of light from infinity come to a focus in front of the retina. When you are myopic, you are able to see clearly up close, but everything in the distance is blurred. Myopia is the result of an eyeball that is too long, or a cornea that is too steeply curved.

The inability to see distant objects clearly or the need to hold a book too close to the eye while reading are the usual complaints of myopic patients. Eyestrain and headache may also occur due to myopia. Sometimes the patient sees black spots floating before the eyes and occasionally flashes of light are also noticed.

The treatment of myopia comprises prescribing appropriate concave lenses and paying attention to ocular hygiene. The myopic patient is fitted with eyeglasses or contact lenses that compensate for the elongated shape of the eyeball, thus allowing the light to focus properly on the retina.