A young man has to hold a book at arm's length to be able to read it clearly. The defect of vision is:

A person cannot see the distant objects clearly (though he can see the nearby objects clearly). He is suffering from the defect of vision called :

Though a woman can see the distant objects clearly, she cannot see the nearby objects clearly. She is suffering from the defect of vision called:

After testing the eyes of a child, the optician has prescribed the following lenses for his spectacles:

Left eye : + 2.00 D Right eye : + 2.25 D

The child is suffering from the defect of vision called :

A person got his eyes tested. The optician's prescription for the spectacles reads:

Left eye : - 3.00 D Right eye : - 3.50 D

The person is having a defect of vision called :