Myopia generally occurs in the young and patient experiences difficulty in seeing objects at a distance. This is because of the parallel rays transmitted by the objects, focusing in front of the retina. This may be due to the change in the curvature of the refracting surface of the eye or due to abnormal refractivity of the media of the eye

Normally after the use of spectacles with concave lens of appropriate curvature, the patient is relieved of the trouble. In one type of myopia, the morbidity continues to increase in adult life. This is called “Progressive myopia” and the patient goes on changing his lens for higher numbers. In Ayurveda this condition in known as ‘ drishti dosha’.

In Ayurveda, person suffering from chronic cold and constipation are considered to be more prone to get myopia. Nervous debility is also considered to give rise to this trouble.