Question

Parts of human eye and its functions

Answer 1

following are important eye parts and func
SCLEROTIC-
*outermost covering of eye from inside
*protects eye from internal damage

CORNEA-
*outermost covering of eye from outside
*protects the eye from external damage

CHOROID-
*layer just inside the sclerotic 
*dark brown in colour
*provides nutrition to the eye 
*it also helps to  check internal reflection

RETINA-
*also known as yellow spot
*very sensitive part 
*image formed on yellow spot has max. clarity
*there is  slight depression in the centre of yellow spot known as Fovea Centalle 
* for minute observation the image should form here.

IRIS-
*muscular diaphragm which has small opening at its middle
*regulates the amount of light entering the eye by adjusting yhe size of pupil 
* gives colour to the eye

PUPIL-
*central circular aperture of iris
*it is transparent but appears black in colour due to  the black colour of retina
* the size of it increases or decreases according to light provided

CRYSTALLINE LENS-
*most important part of eye
*it refracts for the formation of image on the retina

SUSPENSORY LIGAMENTS-
*to hold the crystalline lens at proper place

CILIARY MUSCLES-
*helps to change the size of the lens and therefore its focal length
*depending on the distance between the person and object the focal length automatically changes to make the image to form on retina

AQUEOUS HUMOUR-
*fluid in between the cornea and lens
*helps the eyes to meet proper function

VITEROUS HUMOUR-
*fluid in between lens and retina
*keeps the eye wet. 


HOPE IT IS USEFUL...!



 

Answer 2

✔️✔️✨HERE IS YOUR ANSWER...

️✔️DIFFERENT PARTS OF HUMAN EYES ARE :-
⏩ Corena.
⏩ Pupil.
⏩ Iris.
⏩ Aqueous humour.
⏩ Crystalline lens.
⏩ Ciliary muscles.
⏩ Retina.
⏩ Vitreous humour.
⏩ Optic nerve.

✔️ Light enters the eye through a thin membrane called the CORNEA. It forms the transparent bulge on the front surface of the eyeball.

✔️ The CRYSTALLINE LENS merely provides the finer adjustment of focal length required to focus objects at different distance on the retina.

✔️ IRIS is a dark muscular diaphragm. It is situated behind the cornea. It controls the size of the pupil.

✔️ The PUPIL regulates and control the amount of light entering the eye.

✔️ The RETINA is a dedicated membrane having enormous number of light sensitive cells.

✨✔️✔️HOPE IY HELPS YOU....
✌☺✌