Question

give all types of information of Eyes

Answer 1

I am giving one information first of all eye has just like lens and eye is make virutal an real images and without light reached of cannot see any body

Answer 2

Human eye acts like a camera, enable us to capture the colourful picture of the surroundings.
An inverted, real image on light sensitive is formed on the Retina

Human eye consists the following parts ;
✴ Cornea : It is a thin membrane through which light enters. It forms the transparent bulge on the front of eyeball. Most of the refraction occurs at the outer surface of the cornea.

✴ Eyeball :it is a convex lens, approximately spherical in shape, with a diameter of about 2.3 cm. It can alter its curvature with help of ciliary muscles.

✴ . Iris :It is a dark muscular diaphragm that controls the size of pupil.It is behind the
cornea.it helps in accomodation of light by changing the size of the pupil.

✴ Pupil :It regulates and control the amount of light entering the eye. It is the black opening
between aqueous humour& lens.BLack in colour. Light entering cannot exit.

✴ Crystalline eye lens :Provides the focused real & inverted image of the object on the
retina. It is composed of a fibrous, jelly like material. This is convex lens that converges light at retina.

✴ Ciliary muscles :It helps to change the curvature of eye lens and hence changes its focal length so that we can see the object clearly placed at different positions.

✴ Retina : Thin membrane with large no. of light sensitive cells.
There are two types of photoreceptors in the human retina, rods and cones.
Rods are responsible for vision at low light levels . They do not mediate color vision.
Cones are active at higher light levels , are capable of color vision.
When image is formed at retina, light sensitive cells gets activated and generate electrical
signal. These signals are sent to brain via optic nerve. Brain analyse these signals after which
we perceive object as they are.

✴ The vitreous body is the clear gel that fills the space between the lens and the retina of the eyeball of humans and other vertebrate

✴ The aqueous humour is a transparent, watery fluid similar to plasma, but containing low protein concentrations.