fbpx

Extraocular vision

  • IASbaba
  • January 4, 2020
  • 0
UPSC Articles
Print Friendly, PDF & Email

Extraocular vision

Part of: GS Prelims

In News

  • The ability to see without eyes is known as extraocular vision
  • Latest research shows that species of brittle stars, which are relatives of starfish, can see even though it does not have eyes. It becomes only the second creature, after a sea urchin species, known to have this ability
  • The brittle star sees with the help of light-sensing cells that cover its entire body. These light-sensing cells give the brittle star visual stimuli, allowing it to recognise coarse structures such as rocks

For a dedicated peer group, Motivation & Quick updates, Join our official telegram channel – https://t.me/IASbabaOfficialAccount

Search now.....