Dawes Limit Calculator

The Dawes Limit Calculator can be used to estimate the resolving power of the eye based on visual acuity.

Input Parameters

Calculation Results

Calculation Formula

Dawes Limit = 136 / Visual Acuity

Where:
Visual Acuity is the eye's ability to distinguish fine details and is typically expressed as a fraction (e.g., 20/20).

Result

Dawes Limit: -- lp/mm

Dawes Limit Calculator Usage Guide

Learn how to use the Dawes Limit Calculator and its working principles

How to Use the Calculator

  1. Enter the visual acuity in the input field. For example, if your visual acuity is 20/20, enter "20/20".
  2. Click the "Calculate" button to compute the Dawes Limit.
  3. The result will be displayed in lines per millimeter (lp/mm).

Understanding the Dawes Limit

The Dawes Limit is a measure of the resolving power of the eye. It is the distance at which two lines can be distinguished as separate. A higher Dawes Limit indicates better resolving power. The formula used is:

Dawes Limit = 136 / Visual Acuity

For example, a visual acuity of 20/20 corresponds to a Dawes Limit of 6.8 lp/mm, meaning the eye can resolve details as fine as 6.8 lines per millimeter.