The white outer coating of the eye is called the sclerotic. The sclerotic is responsible for protecting the inner eye as well as giving the eye shape. The cornea is the transparent part of the sclerotic that allows light into the eye.
Lying behind the cornea, the iris is the eyeas equivalent of a cameraas shutter. It is responsible for controlling pupil size and thus the amount of light that enters the eye. The double convex eye lens helps the retina form an image by refracting light.
Ciliary Muscles:-The eye lens is held by ciliary muscles. Ciliary muscles is help the eye lens to change the focal length. Pupil:-At the center of iris there is a whole thouugh which light falls on the lens, which is called pupil.
The aqueous humour is a transparent fluid that fills the space between the cornea and the eye lens. A transparent jelly called the vitreous humour serves a similar function between the eye lens and the retina. A blind spot also exists in the eye where the optic nerve resides. This region is not sensitive to light and images formed their remain invisible.
Made up of light sensitive cell located at the back of the eye lens, the retina serves as the eyeas screen. It is here that images are formed before being sent to the brain by the optic nerve. The optical system of the eyeas principal axis is the dotted line XY axis.
Yellow Spot:-The central part of retina lying on the optic axis of eye is most sensitive to light and is called yellow spot. Eye Lids:- Eye lids provided to control the amount of light falling on the eye. They also protect the eye from dust particles etc.
Power Of Accomodation Of Eye:- Our eye can see the objects which are far away as well as near to it. The propert of the eye that enable the eye to accomodate on the various objects at various distance by altering the power the power of eye lens is called its power of accomodation. Image of the object is formed at retina. The distance between the optical center of the lens and retina is fixed. Ciliary muscles change the focal length of the eye lens by changing its curvature. Therefore the image of the objects situated at the different distances are formed clearly at the retina.
The eye can have various defects. One of these is Myopia. Myopia is present when a person cannot see distant objects clearly. Close objects, however, remain clear. Another defect is known as Hypermetropia which is the opposite. Someone with Hypermetropia can see distant objects clearly but struggle focusing on close objects. - 15478
Lying behind the cornea, the iris is the eyeas equivalent of a cameraas shutter. It is responsible for controlling pupil size and thus the amount of light that enters the eye. The double convex eye lens helps the retina form an image by refracting light.
Ciliary Muscles:-The eye lens is held by ciliary muscles. Ciliary muscles is help the eye lens to change the focal length. Pupil:-At the center of iris there is a whole thouugh which light falls on the lens, which is called pupil.
The aqueous humour is a transparent fluid that fills the space between the cornea and the eye lens. A transparent jelly called the vitreous humour serves a similar function between the eye lens and the retina. A blind spot also exists in the eye where the optic nerve resides. This region is not sensitive to light and images formed their remain invisible.
Made up of light sensitive cell located at the back of the eye lens, the retina serves as the eyeas screen. It is here that images are formed before being sent to the brain by the optic nerve. The optical system of the eyeas principal axis is the dotted line XY axis.
Yellow Spot:-The central part of retina lying on the optic axis of eye is most sensitive to light and is called yellow spot. Eye Lids:- Eye lids provided to control the amount of light falling on the eye. They also protect the eye from dust particles etc.
Power Of Accomodation Of Eye:- Our eye can see the objects which are far away as well as near to it. The propert of the eye that enable the eye to accomodate on the various objects at various distance by altering the power the power of eye lens is called its power of accomodation. Image of the object is formed at retina. The distance between the optical center of the lens and retina is fixed. Ciliary muscles change the focal length of the eye lens by changing its curvature. Therefore the image of the objects situated at the different distances are formed clearly at the retina.
The eye can have various defects. One of these is Myopia. Myopia is present when a person cannot see distant objects clearly. Close objects, however, remain clear. Another defect is known as Hypermetropia which is the opposite. Someone with Hypermetropia can see distant objects clearly but struggle focusing on close objects. - 15478
About the Author:
cash gifting is the most popular money making concepts in the history. cash gifting postcards agree that cash gifting has one basic concept, and that is pure marketing.
