Biology Topic Practice

Correcting Vision Defects

Myopia and Hyperopia occur when light rays don't focus perfectly on the retina.

Which type of lens is used to correct short-sightedness (myopia)?

What is Correcting Vision Defects?

"Myopia and hyperopia are refractive errors of the eye that result in blurred vision at certain distances."

Question 1

Which lens is used to correct myopia (short-sightedness)?

Question 2

What is the function of the retina in the eye?

Question 3

Which defect is corrected using a convex lens?

Vision Correction

Myopia: Light focuses in front of the retina; corrected with concave (diverging) lenses.

Hyperopia: Light focuses behind the retina; corrected with convex (converging) lenses.

New treatments include laser eye surgery and permanent lens implants.

Exam Tip

Short-sighted people can see things close up but struggle with distance; long-sighted is the opposite.

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