Journal Entry 2
Investigate the two types of sight defect- long-sightedness and short sightedness.
Find the following information:
What causes the defect?
The defect can come because of heredity, looking close to what you are trying to read or see or straining your eye to look from far distance. It can be also caused by injuries on the eye.
The symptoms displayed
It would be hard to see far distance of to see short distance
Propose what sort of lens may be used to correct each vision.
To treat long sightedness you will need to wear glasses with convex lens and with short sightedness you will need to wear glasses with concave lens.
