Why Sharp Sight A Deaf?

Research shows that those who have limitations in hearing (hearing impaired) proved to have sharper eyesight than those with normal berpendengaran.

Scientists in Britain found that retinas in people born deaf, or hearing loss at an early age, having a different visual organ development than their normal hearing.

This development turned out to give their peripheral vision (peripheral vision) is better, and make them get a better look while increasing vigilance against threats endangering themselves.

Researchers from the University of Sheffield said, nerve cells in the retina of the eyes of people with hearing impairment are scattered in different patterns than normal hearing.


This enables them to prioritize what appears on the far peripheral vision to be close to their ears. Peripheral vision is a view or vision that is able to recognize the situation around. This capability is often referred to as broad of vision, being able to see things that are far away from the focal point of vision.

Although previous research has shown the link between deaf and increased peripheral vision, experts argue that this phenomenon involves the brain called the visual cortex, not because of the retina.

In research that was initiated on behalf of the Royal National Institute for Deaf People, scientists Sheffield using coherence tomography to scan the retina of the volunteers. In addition to examining the retina, the researchers also measured the field of vision in both eyes compared with the results of volunteers to scan the retina.

As published in the journal PLoS ONE, researchers noted a significant relationship between changes in the distribution of the retina in people with hearing impairment and its influence on the widening of their peripheral vision.