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    				| 1. | Explain Presbyopia using the following points- (b) Cause of this defect. | 
| Answer» Solution :(B) Generally, the focusing power of the eye lens DECREASES with age. The MUSCLES near the lens lose their ability to change the focal length of the lens. The near point of the lens shifts farther from the eye. Because of this old people cannot SEE nearby objects clearly. This DEFECT is known as presbyopia.   | |