Is arm length the reason women need reading glasses sooner than men?

http://www.eurekalert.org/pub_releases/2012-06/afri-ial062212.php

Public release date: 22-Jun-2012
Contact: Katrina Norfleet
Association for Research in Vision and Ophthalmology
Scientific analysis finds gender difference is not related to the eye's focusing power

Rockville, Md. – Studies have consistently reported that women require reading glasses or bifocal lenses earlier than men. According to a recent Investigative Ophthalmology & Visual Science paper, the gender difference is caused by factors other than focusing ability, such as arm length or preferred reading distance, which should be considered when prescribing readers or bifocals.

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