1. The problem statement, all variables and given/known data Could someone explain to me about the near point and the far point in the eye because i'm confused about the 25 cm for the near point and infinity for the far point. Also, like in problems like this: What eyeglasses would you prescribe for persons with the following conditions: (a) A near point of 45.3 cm. (b) A far point of 45.3 cm 2. Relevant equations 3. The attempt at a solution For example, i know that for (a), the do=25 cm and di=0.453 m and for (b) do=infinity and di=0.453 meters but why exactly is it like that? Thanks!