Enhanced Myopia Correction Visualization
This interactive visualization demonstrates how concave lenses correct myopia (nearsightedness) by properly focusing light on the retina. Explore each scenario to understand the optical principles involved.
Problem: In myopia, the eye's optical power is too strong, causing light from distant objects to focus in front of the retina. This results in blurry distance vision.
The far point (maximum clear vision distance) is only 80cm for this individual, compared to infinity for normal vision.
The orange lines show how light converges too soon, missing the retina (red dashed line). The focal point (red dot) appears in front of the retina.
Solution: A concave lens (-1.25 diopters) diverges incoming light before it enters the eye, compensating for the eye's excessive focusing power.
The purple lens creates a virtual image of distant objects at the eye's far point (80cm), allowing the eye to focus them properly on the retina.
Note that the lens doesn't magnify - it actually slightly reduces the image size, but brings it into focus on the retina.
Reading Comfort: Myopic individuals often remove glasses for near work because their natural near point (~25cm) may be normal.
Wearing correction would require holding reading material farther away, reducing the angular size and making text appear smaller.
Without glasses, they can hold reading material at the normal distance (25cm) with optimal angular size for comfortable reading.
