Refraction of eye is affected by all except:
Removal of vitreous
Lens thickened
Optic atrophy
Axial length changed
Optic atrophy does not have any effect on the refractive status of eye. Most Impoant factor is axial length (Q) for myopia* Other impoant factors that determine the refractive power Keratometry means curvature of cornea Lens- thickness , position and sclerosis as the lens has highest refractive index* Remember 1 D change in axial length cause almost 2.5 D change in refractive error* 1 D change in corneal curvature cause 6 D change in refractive error*
Optics and Errors of Refraction