Journal_Week 2 August 12, 2008
Posted by dmatarlo in Science.trackback
Investigate the two types of sight defect- long-sightedness and short sightedness.
Find the following information:
- what causes the defect
The causes of the defect of Short sightedness and long sightedness are:
- If your cornea is too curved
- your eyeball too long
- You are more likely to develop it if it runs in your family
- You are more likely to develop myopia if it runs in your family
b. the symptoms displayed
The displayed symtomps of short and long sightedness are:
- Far objects become blurry but close objects are normal
- Far objects are clear and normal but close objects become blurry.
c. propose what sort of lens may be used to correct each vision
The sort of lens that can be used to correct this defect is a concave lens as the light is passed through is bent into the eye directly and clearly.
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