Gaby Elsusu

Investigate the two types of sight defect- long-sightedness and short sightedness.

Find the following information:

1. What causes the defect Incorrect diet such as sugars and ceral is the fundamental defect in short sightedness. Long sightedness can be inherited (run in families) and a gene has also been identified that cause rare forms of hyperopia.               
2. The symptoms displayed symptoms displayed for short sightedness is that they can not see long distances and symptoms displayed for long sightedness is that they can not see close up objects (short distances).
3. Propose what sort of lens may be used to correct each vision. Concave lens are used to correct short sightedness and convex lens are used to correct long sightedness