Depth Perception - American Academy of Ophthalmology

Depth perception is the ability to see things in three dimensions (including length, width and depth), and to judge how far away an object ... 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Foraccuratedepthperception,yougenerallyneedtohavebinocular(two-eyed)vision.Inaprocesscalledconvergence,ourtwoeyesseeanobjectfromslightlydifferentanglesandourbraincomparesandprocessesthetwosetsofinformationtoformasingleimage.Whenbotheyesseeclearlyandthebrainprocessesasingleimageeffectively,itiscalledstereopsis. Peoplewhorelyonvisionprimarilyinoneeye(calledmonocularvision)maystrugglewithdepthperception.However,somepeoplewhohavehadgoodvisioninoneeyeforalongperiodoftimemayfindtheyhaveacceptabledepthperception.Thisisbecausetheirbrainhasadjustedinvariouswaystomakeupforthelimitedvisualinputfromoneeye. Someconditionsthatcancausedepthperceptionproblemsinclude: Blurryvision,usuallyinoneeye Strabismus Amblyopia Nerveproblemsinoneeye Trauma tooneeye Ifyoususpectyouarehavingtroublewithyourdepthperception,talkwithyourophthalmologist. Readanoverviewofgeneraleyeanatomytolearnhowthepartsoftheeyeworktogether. 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