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P. P. Marvan, M. Rasp, T. Rückl, R. Michael, A. Dexl; Korrelation of Intraocular Staylight and Visual Acutity Before and After Yag Capsulotomy. Invest. Ophthalmol. Vis. Sci. 2010;51(13):5419.
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Examination of visual impaiment due to posterior capsular opacification, especially the correlation of intraocular straylight and vision, before and after YAG-Capsulotomy.
In a prospektive bicentrical study (Barcelona/Spain, Salzburg/Austria), 45 eyes were examined. We tested visual acuity (Snellen) and intraocular straylight (C-Quant, straylightparameter (log[s])) before and two weeks after YAG-Capsulotomy under photopical conditions. In each case the straylight testing was performed in myosis and with dilated pupills.
Patients with posterior capsular opacification had a lower vision (0,52sn + 0,2) and higher straylight values (1,52 log(s) + 0,49). Comparing the staylight values with dilated pupills (1,69 log(s) + 0,53) to the values in myosis, there was an even higher significant increase of straylight. After performing a YAG-Capsulotomy there was a significant increase of visual acuity (0,86sn + 0,17), aswell as a significant advancement of the straylight values in myosis (1,31 log(s) + 0,21). Unexpectedly there was no post OP significant advancement of the straylight value in dilated pupills (1,56 log (s) + 0,22)
Performing a YAG-Capsulotomy leads to a significant advancement of visual acuity and therefore to more patient satisfaction. It leads aswell to a significant decrease of intraocular straylight and so to less glare. Both, pre- and postoperativly, the straylight values show a significant increase, when the pupill is dilated. This may happen due to occurrence of spherical and chromatical aberations.
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