Overview Of All The Human Eye Defects
Myopia (Nearsightedness)
Description: Near objects appear clear, distant objects are blurry.
Cause: Eyeball is too long or cornea too curved.
Correction: Concave lenses.
Hypermetropia (Farsightedness)
Description: Distant objects appear clear, near objects are blurry.
Cause: Eyeball is too short or lens too flat.
Correction: Convex lenses.
Astigmatism
Description: Blurred or distorted vision at all distances.
Cause: Irregular curvature of the cornea or lens.
Correction: Cylindrical lenses.
Presbyopia
Description: Age-related difficulty focusing on close objects.
Cause: Loss of lens flexibility with age.
Correction: Bifocal or progressive lenses.