a 10-yr-old partially sighted , one-eyed patient with 10/200 distance acuity and no experience in using an optical aid was able to read successfully by using a 10 x selsi telescope with a + 3.50 d reading cap , an easel to hold in material upright and free his hands to hold the telescope and write , and a high-intensity desk lamp to provide adequate retinal illiumination through a congenital cataract .
C0015392
eyed
C0035298
retinal