Indra Prasad Sharma

optometry ophthalmology refraction astigmatism myopia eye test eye examination slitlamp health advocacy eye health internet mobile research market research hypothesis optic nerve head oct lid disorders anterior segment disease convergence accommodation squint horopter exotropia exophoria binocular vision eye disease management blepharitis cross cylinder power eye axis refinement subjective refraction jcc biomicroscope cornea hypermetropia