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PURPOSE: To report on new software that was specially designed to evaluate color. METHODS: Software development and observational case report. Each pixel on a computer screen is composed of three colors: red, green, and blue (RGB). This software analyzes the intensity of each RGB component in a specific area chosen by the user. To test their software, the authors evaluated the color level of the irises of a subject, which became darker as a side-effect of Xalatan (latanoprost; Pharmacia Corporation, Peapack, New Jersey) eyedrops. RESULTS: The authors successfully expressed the level of the color of the iris by number. CONCLUSIONS: This software measures the color of a lesion and thereby provides an objective evaluation of color. This software is downloadable, without cost, from http://www.isao.com.
Dr. I. Otaka, Department of Ophthalmology, Shizuoka Red Cross Hospital, Shizuoka, Japan. otaka@isao.com
6.20 Progression (Part of: 6 Clinical examination methods)