AMBV 1 0.0 / 5 ? OtheroptometryUniversityNone Created by: maryamb2702Created on: 09-11-21 21:25 advantages of 2 eyes spare eye, binocular summation, larger field of view, stereopsis 1 of 18 what is stereopsis ability to perceive depth using binocular vision 2 of 18 what is binocular summation increase in our visual ability when using two eyes as our brain receives more information when both eyes are working together 3 of 18 what is fusion ability to form one single image from two different retinal images (binocular single vision) 4 of 18 what happens when object in fusion are differrent? supression, confusion or rivalry 5 of 18 what is supression in terms of fusion this occurs to eliminate one image to prevent any confusionq 6 of 18 what is confusion in terms of fusion one image is presented on top of the other image (superimposed) 7 of 18 what is binocular rivalry in terms of fusion alternating supression of the two eyes so there is an alternating perception of the two images (flick between seeing the two images, they compete) 8 of 18 what is sensory fusion ability to appreciate two images as one. they must be similar in size, brightness and sharpness 9 of 18 what is motor fusion the ability to align the eyes so that sensory fusion can take place. extra ocular muscles need to be functioning well 10 of 18 what are the corresponding retinal points the points that receive light rays from objects points stimulated on the retina that give rise to the same visual direction. 11 of 18 diplopia two non corresponding points can result in double vision. the foveas are looking at two different objects 12 of 18 what is disparity difference in image location seen by the left and right eyes. used to extract information about depth. 13 of 18 what is important for stereopsis? overlap of visual fields, disparity detection, coordinated and conjugate(married) eye movements 14 of 18 what is a manifest deviation? misalignment of visual axis leading to strabismus, squints and tropias no occlusion deviation is present 15 of 18 what is a latent deviation? a phoria only exposed by breaking binocular vision 16 of 18 what does concomitant mean? a tropia/ phoria that is constant regardless of gaze or whichever eye is fixating 17 of 18 what does incomitant mean? a tropia/phoria that changes in size depending on direction of gaze and which eye is fixating 18 of 18
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