Chapter 26, Problem 7PFN

Summary Introduction

A Snellen chart is an eye chart which is used to measure the acuity of the vision. It is a vision assessment tool which is used to screen the distant vision of the eye. This chart consists of the characters of different sized types that are arranged in the form of lines. The largest character lines are arranged at the top and the smallest character lines are arranged at the bottom. The scores range from 20/200 in the largest line of character and 20/10 in the smallest line of character.