tony haouchab

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

Find the following information:

1. what causes the defect –

Short sightedness – when you are not able to see close up, this could be caused by being close up to the TV, computer etc.

Long sightedness – when you are not able to see at a long distance and could also have trouble with close up.

1. the symptoms displayed

Long sightedness – objects look very fuzzy and blurry, you get headaches and tired eyes, and you start to squint.

Short sightedness – object appear blurry and unfocused.

1. Propose what sort of lens may be used to correct each vision.

For short sightedness, glasses with lenses that are not as thick, thin just for close up. And for long sightedness, they will need thick lenses so they are able to see in a further distance and possibly for a close up.

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