This Article  • Full text  • PDF  • Reply to article  • Send to a friend  • Save in My Folder  • Save to citation manager  • Permissions  Citing Articles  • Contact me when this article is cited  Related Content  • Related article  • Similar articles in this journal  Topic Collections  • Laser Surgery  • Refractive Surgery  • Statistics and Research Methods  • Alert me on articles by topic  Social Bookmarking   What's this?

Sandra M. Brown, MD; Jay C. Bradley, MD; Arshad M. Khanani, MD

	Since this article does not have an abstract, we have provided the first 150 words of the full text and any section headings.

We read with interest the article by Schmidt et al¹ regarding the effect of pupil diameter on vision-related quality of life after laser in situ keratomileusis. We have 2 objections to their methods.

First, we do not believe that pupil diameter was accurately measured. Pupil diameter is controlled by the level of rod photoreceptor activation.² Rod adaptation is not an instantaneous process. Although there may be a rapid immediate increase in pupil diameter when the lights are dimmed, additional dilation of 0.5 to 1 mm is common over 2 to 5 minutes. As pupil diameter and age are strongly correlated (Figure), we can predict one from the other: with a mean pupil diameter of 5.8 mm, we would expect the average age of the patient cohort to be approximately 60 years, not 44 years as reported. . . . [Full Text of this Article]

AUTHOR INFORMATION


CiteULike    Connotea    Del.icio.us    Digg    Reddit    Technorati    Twitter     What's this?

RELATED ARTICLE

Evaluation of the Relationship Between Ablation Diameter, Pupil Size, and Visual Function With Vision-Specific Quality-of-Life Measures After Laser In Situ Keratomileusis
Gregory W. Schmidt, Michael Yoon, Gerald McGwin, Paul P. Lee, and Stephen D. McLeod
Arch Ophthalmol. 2007;125(8):1037-1042.
ABSTRACT | FULL TEXT