A B
C D E
F G H I J K L
M N O P Q R T U
V W X Y Z
The
Eye
The eye is the organ that gives us the sense of sight.
Sight is the most precious of the five senses. Our eyes enable us to learn far more about the world around us than do any of the other four senses.
We use our eyes in almost every activity we perform in our daily life, such as reading, writing, working, cooking, sewing, watching television or driving a vehicle.
Functions of the eye
Vision is the ability to perceive the world around us.
Our eyes allow us to see and interpret the shapes, colors and dimensions of objects by processing the light reflected from them.
The eye is able to see in dim or bright light, but it cannot see in the total absence of light.
Characteristics of the eye
- Visual acuity: The ability to see objects clearly
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Field of vision: The ability to see objects in the periphery of the vision
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Colour vision: The ability to distinguish between different
colour
Tips for Eye Care
Some general precautions for better eye health:
- Consult an eye specialist immediately if you notice any of these problems:
- Double or blurred vision
- Halos around lights
- Inability to see faces clearly
- Distortion of prints and fading of colors
- Parts of words or letters appear missing
- Difficulty in judging depth on stairs or pavements
- Tendency to bump into objects
- Prolonged difficulty in adjusting from lighted to dark areas
- Sparks of light appears on your peripheral vision
- Car headlights appearing to have spokes radiating from a central point
- Sudden pain in one or both the eyes
- Appearance of 'floaters' or spots in front of the eyes
- If you are above 45 years of age
- Visit an eye doctor every year for a comprehensive check-up. It MUST include a dilated eye examination and tests for glaucoma.
- If you have diabetes, high blood pressure or a family history of eye disease, you may need a check-up twice a year.
- When using tools always wear protective glasses to prevent accidental eye injuries.
- Avoid exposure to ultraviolet rays. If unavoidable wear glasses that block UV rays.
- Take care of your general health. Eat foods rich in vitamin E, B, C, zinc and selenium.
Some Common Myths
- Holding printed material close to the eyes is harmful.
- Reading for long periods of time harms the eyesight.
- Our reading ability is correlated with visual acuity, binocular fusion and depth perception.
- A low vision child will eventually become blind.
- Use of low vision (optical) devices is harmful.
- Persons with low vision can damage their vision further if they watch television from close.
- Children with poor vision always need spectacles or low vision devices.
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