These tools will no longer be maintained as of December 31, 2024. Archived website can be found here. PubMed4Hh GitHub repository can be found here. Contact NLM Customer Service if you have questions.


Pubmed for Handhelds

PUBMED FOR HANDHELDS

Search MEDLINE/PubMed

  • Title: Straylight measurements in pseudophakic eyes with natural and dilated pupils: one-year follow-up.
    Author: van Gaalen KW, Koopmans SA, Hooymans JM, Jansonius NM, Kooijman AC.
    Journal: J Cataract Refract Surg; 2010 Jun; 36(6):923-8. PubMed ID: 20494762.
    Abstract:
    PURPOSE: To compare the amount of straylight in natural pupils and dilated pupils in pseudophakic eyes 6 weeks and 1 year after cataract extraction. SETTING: Laboratory of Experimental Ophthalmology, University Medical Center Groningen, University of Groningen, Groningen, The Netherlands. METHODS: This study evaluated patients with bilateral age-related cataract who had cataract surgery with implantation of an aspheric Tecnis ZA9003 or spherical Sensar AR40e intraocular lens (IOL). Straylight measurements were performed with a C-Quant straylight meter 6 weeks after surgery (with natural pupils) and 1 year after surgery (with natural and dilated pupils) in a randomly chosen eye. Retroillumination photographs of dilated pupils were taken to document posterior capsule opacification. The main outcome variable for straylight measurements was the logarithmic straylight parameter, log(s). RESULTS: Twenty-two patients were evaluated. There was a statistically significant decrease in straylight in a natural pupil between 6 weeks (mean 1.44 log[s]) and 1 year (mean 1.30 log[s]) postoperatively (P = .012). The straylight parameter was greater after dilation (mean 1.48 log[s]) than with a natural pupil (1.29 log[s]) at 1 year (P = .012). This difference was greater when more anterior capsule was visible in the pupillary area (P = .031). CONCLUSIONS: Straylight decreased significantly in the first year after cataract surgery. Furthermore, it increased with increasing pupil size, which was associated with a capsulorhexis smaller than the pupil. This indicates the capsulorhexis should be as large as possible to prevent straylight, especially under low-luminance conditions when the pupil is large.
    [Abstract] [Full Text] [Related] [New Search]