eyes

     

Eyes are organs that etect light. Different kinds of light-sensitive organs are found in a variety of animals. The simplest "eyes", in even unicellular organisms, do nothing but detect whether the surroundings are light or dark, which is sufficient for the entrainment of circadian rhythms and may allow the organism to seek out or avoid light, but hardly can be called vision.

Trivia about eyes

  • In "The Cocoanuts" Groucho told Margaret Dumont, hers "Shine like the pants of a blue serge suit"
  • There may be thousands of ommatidia, light-sensitive units, in an insect's compound one of these
  • On the housefly, these are large, compound & composed of up to 4,000 individual lenses
  • To frighten predators, the owl butterfly has large spots on its wings that resemble these
  • The sea horse has a prominent pair of these which can move independently of each other
  • Estee Lauder's Uncircle is a treatment for dark circles under these
  • On a true sole both of these are on the right side of the head
  • These are always open, & their protective covering, called the spectacle, is shed with the skin
  • To aid its nocturnal habits, these facial features on a tarsier are each as big as its brain
  • Body part that lends its name to the household fastener seen here:
  • Insects have compound ones; arachnids have simple ones
  • Disgusting as it sounds, a watchful person "keeps" these "peeled"
  • A water snail has these at the base of its tentacles; a land snail has them at the top
  • Your peepers,your lamps or your blinkers
  • Lack of coordination between these matching organs is called strabismus
  • Shakespeare's Bassanio says Portia uses these facial features to send him "fair speechless messages"
  • Unlike most sea animals, in the sea horse this pair of sense organs can move independently of one another
  • Visine
  • Francis Bourdillon wrote, "The night has a thousand of" these "and the day, but one"
  • Some insects have 3 of these sense organs, called ocelli, arranged in a triangle on the head
  • A membrane called the conjunctiva covers parts of these organs
  • These organs have a transparent membrane called the conjunctiva covering the front of them
  • On their heads bees have 5 of these -- 2 compound & 3 simple
  • The western tarsier can hardly move these within their orbits, but it can rotate its head 360°
  • At 3 times proportional size of any other primate the tarsier has a colossal pair of these
  • Amazement is often said to make these "wide as saucers"
  • Poet F.W. Bourdillon wrote, "The night has a thousand" of these, "and the day but one"
  • "Here's looking at" the first needles to have these stamped into them, in 1826
  • If you're buying a whole fish, these (on the fish) should be clear & not sunken
  • Ophthalmitis
  • Trilobites were among the first creatures to have these; they were compound crystals that survive as fossils
  • A flirtatious female is said to be "making" these cow parts "at you"
  • This most complex of mammalian sense organs sits in a bony socket
  • Uvex specializes in protecting these, as with its innovative Astrospec line
  • On the housefly, these are composed of up to 4,000 individual lenses
  • Keratitis
  • One of these sensory organs is l'oeil in French; both of them are called les yeux
  • In strabismus one or both of these may turn inward or outward
  • Strabismus is the technical term for the inability to coordinate the movement of these
  • Each of these on the dragonfly is made up of 28,000 hexagonal-shaped ommatidia
  • Researchers are basing robots' sensors on these compound organs on flies
  • Feature on a flatfish that, as reference sources put it, migrates as the fish grows