Chemistry, asked by lucki57, 9 months ago

describe the function of eye and draw its labelled diagram​

Answers

Answered by ajeetaajbhiraj
1

Answer:

the function of eye is 1)when light strikes the eye ball ,it is refracted first.

2) it then enters the eye ball through pupil.

3)The Iris muscles guard the size of the pupil and regulate the amount of light that enters the eye.

4)The eye lens is a bioconvex lens and forms a real and inverted image on the retina

5) These signal are sent to the brain via the optic nerves . The brain interprets these and finally processes the information.

Explanation:

I don't in this app how to take a pic plz mark my answer as brainlist

Answered by ahnawatson2003
1

Answer:

Look at image

Explanation:

Parts of the Eye:

  • Cornea - The cornea is the outermost layer of the eye and is primarily responsible for focusing the light that comes into our eyes. There are 5 layers to the cornea. The outer layer acts as a kind of shield to the elements and can usually repair itself within a few days of suffering a minor injury. The deeper layers exist mainly to strengthen the eye.
  • Pupil - The pupil is the black circle in the center of the eye, and its primary function is to monitor the amount of light that comes into the eye. When there is a lot of light, the pupil contracts to keep the light from overwhelming the eye. When there is very little light, the pupil expands so it can soak up as much as possible.  
  • Iris - The iris is the colored part of the eye. Although it might seem purely cosmetic, the iris actually functions to adjust the size of the pupil. It has muscles that contract or expand depending on the amount of light the pupil needs to process images.  
  • Lens - The lens exists behind the pupil and is responsible for allowing your eyes to focus on small details like words in a book. The lens is in a constant state of adjustment as it becomes thinner or thicker to accommodate the detailed input it receives. With age, the lens loses a lot of its elasticity which often results in cataracts and presbyopia because the lens cannot adjust as well to its surroundings as it used to.  
  • Vitreous Humour - The vitreous humour is a gel-like substance that helps to keep the eyeball in its proper, circular shape. This is the area in the eye where floaters develop as pieces of the vitreous humor clump together and cast shadows onto the retina. With age, the vitreous humor begins to shrink and can cause problems like posterior retinal detachment or retinal tear.
  • Retina -The retina is the area at the back of the eye that receives the refined, visual message from the front of the eye, and it transmits that visual message to the brain using electrical signals.  
  • Sclera -The sclera is the white part of the eye, and its main function is to provide strength, structure, and protection for the eye. The sclera contains blood vessels that can tell an eye doctor a lot about the state of your overall health.

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