Which of the following is contrast sensitivity testing cha?
Contrast sensitivity is affected by various factors like age, refractive errors, glaucoma, amblyopia, diabetes, optic nerve diseases and lenticular changes. Fuher, contrast sensitivity may be impaired even in the presence of normal visual acuity. Reference : A K KHURANA COMPREHENSIVE OPHTHALMOLOGY, Edition4 ,page-17
Pellirobsons
Snellen type cha
Regan cha
All of the above
Anatomy, Development and clinical examination