Health on MSN5 个月
What's the Difference Between Being Nearsighted and Farsighted?
It is possible to have both nearsightedness and farsightedness, but not in the same eye. Anisometropia is a condition in ...
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.