Research has shown that deaf people have better eyesight than those who can hear as their retina develop differently.
The retinal nerve cells of deaf people are distributed differently which gave them greater peripheral vision. This makes them prioritize what they can see at their furthest peripheral vision, close to their ears. Previously scientists thought that the visual cortex in the brain was responsible for better vision and not the retinas.
AdvertisementOcular coherence tomography (OCT) was used to scan the retinas of study participants. The research which was conducted at the University of Sheffield has been published in the journal PlosONE.