The minimum distance at which one can read comfortably with a normal eye is about ___ cm.
The most comfortable distance at which one can read with a normal eye is about 25 cm. This distance is also called least distance of distinct vision.
The most comfortable distance at which one can read with a normal eye is about ________ cm.
In order to see comfortably for a normal human eye, what is the minimum distance at which an object should be placed?