Eye Kurali(g)
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ICT PROJECT Govt. Girls Sr. Sec. School, Kurali
Kaur
Prepared by:Mrs. Kamaljeet Mrs. Harpreet Kaur
Topic
Human Eye
Introduction Eye (anatomy), light-sensitive organ of vision. Humans eye can distinguish minute variations of shape, color, brightness, and distance. The actual process of seeing is performed by the brain rather than by the eye. The function of the eye is to translate the electromagnetic vibrations of light into patterns of nerve impulses that are
Anatomy of Eye The parts of eye are as follows: Sclera. Choroid. Retina. Lens. Iris. Pupil. Cornea. Optic Nerve. Ciliary Muscles. Aqueous Chamber. Vitreous Chamber.
Layers of eye The entire eye, often called the eyeball, is a spherical structure. The outer part of the eye is composed of three layers of tissue. The outside layer is the sclera, a protective coating. At the front of the eyeball, it is continuous with transparent cornea. The middle layer of the coating of the eye is the choroid. The choroid is
Functioning of Eye The amount of light entering the eye is controlled by the pupil, which dilates and contracts accordingly. The cornea and lens focus the light on the retina. Lacrimal glands secrete tears that wash foreign bodies out of the eye and keep the cornea from drying out. Inverted image is formed on retina which is conveyed to the brain through optic
Eye Disorders
Myopia (Near sightedness)---The convexity of lens is more than normal. Image is formed in front of retina. So the image of distant object is blurred.
Correction---It is removed by the use of concave lens.
Eye Disorders
Hyper myopia (Far sightedness)--The convexity of lens is less than normal. Image is formed in behind the retina. So the image of near object is blurred.
Correction---It is removed by the use of convex lens.
Eye Disorders
Color Blindness---Color Blindness--Blindness, defect of vision affecting the ability to distinguish colors, occurring mostly in males. Color blindness is caused by a defect in the retina
Bibliography
Text book of Science for class VIII (P.S.E.B.) Microsoft Encarta Encyclopedia Deluxe 2005 Guidance of Computer Faculty.
Kaur
Prepared by:Mrs. Kamaljeet Mrs. Harpreet Kaur
Topic
Human Eye
Introduction Eye (anatomy), light-sensitive organ of vision. Humans eye can distinguish minute variations of shape, color, brightness, and distance. The actual process of seeing is performed by the brain rather than by the eye. The function of the eye is to translate the electromagnetic vibrations of light into patterns of nerve impulses that are
Anatomy of Eye The parts of eye are as follows: Sclera. Choroid. Retina. Lens. Iris. Pupil. Cornea. Optic Nerve. Ciliary Muscles. Aqueous Chamber. Vitreous Chamber.
Layers of eye The entire eye, often called the eyeball, is a spherical structure. The outer part of the eye is composed of three layers of tissue. The outside layer is the sclera, a protective coating. At the front of the eyeball, it is continuous with transparent cornea. The middle layer of the coating of the eye is the choroid. The choroid is
Functioning of Eye The amount of light entering the eye is controlled by the pupil, which dilates and contracts accordingly. The cornea and lens focus the light on the retina. Lacrimal glands secrete tears that wash foreign bodies out of the eye and keep the cornea from drying out. Inverted image is formed on retina which is conveyed to the brain through optic
Eye Disorders
Myopia (Near sightedness)---The convexity of lens is more than normal. Image is formed in front of retina. So the image of distant object is blurred.
Correction---It is removed by the use of concave lens.
Eye Disorders
Hyper myopia (Far sightedness)--The convexity of lens is less than normal. Image is formed in behind the retina. So the image of near object is blurred.
Correction---It is removed by the use of convex lens.
Eye Disorders
Color Blindness---Color Blindness--Blindness, defect of vision affecting the ability to distinguish colors, occurring mostly in males. Color blindness is caused by a defect in the retina
Bibliography
Text book of Science for class VIII (P.S.E.B.) Microsoft Encarta Encyclopedia Deluxe 2005 Guidance of Computer Faculty.
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