What type of lens corrects myopia?

• A. Concave lens
• B. Convex lens
• C. Plano-convex lens
• D. Cylindrical lens

Answer: (A)

Myopia is when light is focused in front of the retina, so distant objects appear blurry. A concave lens, which is a diverging lens, spreads incoming light just enough so its focal point shifts backward onto the retina. That counteracts the eye’s tendency to converge light too much and restores clear distance vision.

Convex lenses would bring the focal point forward, worsening distant vision, so they’re not suitable for myopia. Plano-convex lenses also help converge light and aren’t the right fix here. Cylindrical lenses correct astigmatism by changing focus differently in different meridians, not simply myopia.