The lens of the eye never stops growing throughout life.
Why it is true
New layers of cells are added on the outside, like an onion, and the old ones are never removed. The lens becomes thicker and less flexible, which is why almost everyone needs reading glasses after the age of 40.
Source: American Academy of Ophthalmology
Would you rather be asked first?
This is the reading side of the site, so the answer is in the sentence above — that is the whole point of it. Test yourself works the other way round: the question comes on its own, and the fact and the explanation only appear once you have answered.
