Question

explain 3 types of defect found in human eye

Answer 1

FIRST IS MYOPIA (NEAR SIGHTEDNESS) this is a defect in vision in human eye inthis we see the objects which are far to us blurred but far objects could be seen clearly
SECOND IS HYPEROPIA(FAR SIGHTEDNESS)this is also a defect in vision in human eye inthis we see objects which are near to us not clearly but we can see far objects clearly
The 3rd one i dont know!!
MARK AS BRAINLIEST

Answer 2

Myopia or short sightedness - Myopia also called ahort sightedness, is a defect in the eye when a person can see clearly an object present at a distant place. Such a defect may arise when the eye ball is too long so that the image is focused in front of retina. This defect may be corrected by concave lenses
Hypermetropia or long sightedness - In this defect a person cannot see an object located at closer location. Such a defect arises when eye ball is too short and the image of an object is focused behind the retina. The defect may be corrected by convex lenses
Presbyopia - Presbyopia is an age related problem of eye developed due to gradual thickening and loss of flexibility of the lenses inside the eyes. In this defect people experience blurred near vision. The defect appears around 40 years of age and it may be corrected by wearing bifocal lenses or contact lenses