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PARTS OF THE EYE
Fill in the blanks with the words in the box.
optic nerve  /  choroid  /  sclera
lens  /  iris  /  cornea  /  retina  /  pupil
...............
...............
...............
............... ...............
...............
...............
...............
Fill in the blanks with some words in the box above.
1- The coloured circular part of that eye that surrounds the
black pupil is ...............
2- ............... is the transparent covering of the eye that protects
the front of it.
3- ............... is the area at the back of the eye that receives light
and sends pictures of what the eye sees to the brain.
4- The circular blackarea in the centre of an eye is ...............
5- ............... is the group of nerve fibres that pass signals from
the retina at the back of each eye to the brain.
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FAQs on Visual Worksheet: Parts of The Eye - Science Class 10

1. What are the main parts of the eye and their functions?
Ans. The main parts of the eye include the cornea, lens, retina, iris, pupil, and optic nerve. The cornea helps to focus light, the lens adjusts for distance, the retina converts light into signals, the iris controls the amount of light entering the eye, the pupil is the opening through which light passes, and the optic nerve transmits visual information to the brain.
2. How does the eye process light?
Ans. Light enters the eye through the cornea, passes through the aqueous humor and pupil, and is further focused by the lens onto the retina. The retina contains photoreceptors that convert light into electrical signals, which are then sent via the optic nerve to the brain, where they are interpreted as images.
3. What is the role of the retina in vision?
Ans. The retina is a thin layer of tissue at the back of the eye that contains photoreceptor cells, called rods and cones. Rods are responsible for vision in low light, while cones enable color vision and detailed sight. When light hits these cells, they generate electrical signals that are sent to the brain, allowing us to see.
4. Why do we have a blind spot in our vision?
Ans. The blind spot is the area on the retina where the optic nerve exits the eye, lacking photoreceptors. Consequently, there is no image detection in this area. Although we have a blind spot, our brain fills in the missing information based on surrounding visual cues, so we are usually unaware of it.
5. What are common eye problems related to these parts?
Ans. Common eye problems include cataracts (clouding of the lens), glaucoma (damage to the optic nerve), macular degeneration (deterioration of the retina), and refractive errors like myopia (nearsightedness) and hyperopia (farsightedness). These issues can affect vision and may require corrective lenses or medical treatment.
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