his conclusions are : aphakic eyes perceive ultraviolet light , the optic disc is perceived as a point rather than a space the size of the disc , a certain minimal similarity of light intensity on the two retinas is necessary for fusion of images , reduction telescopes can be made by a combination of contact lenses and trifocals which balance the image size in unilateral aphakia , the visual angle of cataract glasses may be only 56 degrees but is perceived as 90 degrees with a 22 degrees blind sector , a patient can observe the progress of his own cataract by looking through a pinhole , and the optimal prescription for contact lenses in aphakia is with acute vision provided at 75 cm . rather than at 5 or 6 m .
C0015392
eyes
C0035298
retinas