Pupillary dilation from 3 to 7 mm in post - PRK patients

 found to cause 25-to 32-fold increase in aberrations!

 

 

http://www.ncbi.nlm.nih.gov/entrez/...st_uids=9932992

 

American Journal of Ophthalmology

 

Volume 127, Issue 1 , January 1999, Pages 1-7

Comparison of corneal wavefront aberrations after photorefractive keratectomy and laser in situ keratomileusis.

Oshika T, Klyce SD, Applegate RA, Howland HC, El Danasoury MA.

Department of Ophthalmology, University of Tokyo School of Medicine, Japan. This email address is being protected from spambots. You need JavaScript enabled to view it.

 

Excerpt: Before surgery, simulated pupillary dilation from 3 to 7 mm caused a five- to six-fold increase in the total aberrations. After surgery, the same dilation resulted in a 25- to 32-fold increase in the photorefractive keratectomy group and a 28- to 46-fold increase in the laser in situ keratomileusis group.