Write a report on different types of eye defecks
Answers
Answer:
What are the most common types of eye defects
MYOPIA or NEARSHIGHTED. Myopia occurs when the eyeball is too long, relative to the focusing power of the cornea and lens of the eye. ...
HYPEROPIA or FARESIGHTED. This vision problem occurs when light rays entering the eye focus behind the retina, rather than directly on it. ...
ASTIGMATISM. ...
PRESBYOPIA.
Explanation:
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See the answer Below Mate :-
#TYPES :-
#There are 4 Types of Eye Defects.
1)MYOPIA or NEARSIGHTED.
2)HYPERMETROPIA or FARSIGHTED.
3)ASTIGMATISM.
4)PRESBYOPIA.
#DEFINITION :-
#Definition of 4 Types of Eye Defects.
1)Myopia :-
=>Myopia occurs when the eyeball is too long, relative to the focusing power of the cornea and lens of the eye. This causes light rays to focus at a point in front of the retina, rather than directly on its surface.
=>Symptoms: Eye strain; Headache.
=>Treatments: LASIK; Orthokeratology; Contact lens.
2)Hypermetropia :-
=>A person with hypermetropia/hyperopia or long sight can see clearly objects far away from them, but not close to them. This is caused by the shape of the eye - the eyeball is slightly too short.
=>Symptoms: blurry vision for words or objects up close.
=>Treatments: LASIK or CK.
3)Astigmatism :-
=>Astigmatism is a common vision condition that causes blurred vision. It occurs when the cornea (the clear front cover of the eye) is irregularly shaped or sometimes because of the curvature of the lens inside the eye.
=>Symptoms: Blurred vision.
=>Treatments: LASIK; Photorefractive keratectomy.
4)Presbyopia :-
=>Presbyopia is a natural part of the aging process. It is due to hardening of the lens of the eye causing the eye to focus light behind rather than on the retina when looking at close objects. It is a type of refractive error along with nearsightedness, farsightedness, and astigmatism.
=>Causes: Aging resulting in hardening of the lens.
=>Symptoms: Hard time reading small print.
=>Other names: The aging eye condition.
These all are the Definition, causes, types, symptoms & treatment.