BBC4 年
Common defects of the eye and how they can be overcome
Two common defects of the eyes are myopia (short-sightedness) and hyperopia (long-sightedness ... laser surgery to change the shape of the cornea and a replacement lens in the eye.
Business Insider3 年
Why astigmatism causes blurry vision, especially at night
The condition can occur with nearsightedness (myopia) or farsightedness (hyperopia ... in which the shape of the eye doesn't bend light correctly, causing blurred vision. The other types of ...