Question

state two causes of the above defect​

Answer 1

I can't understand

write the question correctly

Answer 2

Answer:

the cause of hypermetropia : this defects arise due to either of the following two reasons

( 1 ) the eyeball become too small along its axis so that the distance between eyelens and the retina is reduced

( 2 ) the focal length of the eyelens become too large resulting in the low converging power of the eyelens