Magnifier is a convex lens, which can condense light;

Hyperopia means that the lens is too thin and its ability to deflect light is too weak. The light from the near object reaches the retina before converging, forming a fuzzy spot on the retina, so we can't see the near object clearly. We need to wear a converging lens-a convex lens.

So, the answer is: extension; Convex; Convergence; It's far.