Skip to main page content
U.S. flag

An official website of the United States government

Dot gov

The .gov means it’s official.
Federal government websites often end in .gov or .mil. Before sharing sensitive information, make sure you’re on a federal government site.

Https

The site is secure.
The https:// ensures that you are connecting to the official website and that any information you provide is encrypted and transmitted securely.

Access keys NCBI Homepage MyNCBI Homepage Main Content Main Navigation
. 1993 Jun;71(3):296-300.
doi: 10.1111/j.1755-3768.1993.tb07138.x.

Visual acuity: calculating appropriate averages

M J Moseley  1 , H S Jones
Affiliations

Visual acuity: calculating appropriate averages

M J Moseley et al. Acta Ophthalmol (Copenh). 1993 Jun.

Abstract

Controversy surrounds the averaging of visual acuity scores. We examine this debate and provide a series of guidelines and worked examples to enable investigators to select an average (e.g. arithmetic mean, geometric mean, median) appropriate for their data.

PubMed Disclaimer

LinkOut - more resources