<prompt> By pinhole visual acuity is neutralized till:1 D2 D3D4D  <response>: Ans. c 3 DRef.: A.K. Khurana 6th ed. 578 By pinhole test visual acuity can be neutralized till 3 D. It cant accommodate more than that. It is a test to distinguish a refractive error from organic disease. A refractive error may, be corrected with glasses, whereas organic disease may signal the development of preventable blindness. If visual acuity is improved after pin hole test, the defect is refractive; if not, it is organic. Pinhole improves vision: refractive error, peripheral cataract Pinhole worsen vision: Macular diseases, central lens opacities Vision static with pinhole: Amblyopia 