Effect of Nd:YAG capsulotomy on the morphology of surviving Elschnig pearls.

作者:	N Hirnschall, T Neumayer, M Georgopoulos, O Findl
语言:	Eng.
日期:	2009-11-26
学报:	The British journal of ophthalmology (1468-2079)
发行:	Br J Ophthalmol. 2009 Dec;93(12):1643-7
摘要:	AIM: To observe the short-term changes in morphology of Elschnig pearls induced by Nd:YAG capsulotomy. SETTING: Department of Ophthalmology, Medical University of Vienna, Austria METHOD: Twenty eyes of 19 pseudophakic patients with regeneratory posterior capsule opacification (PCO) that were scheduled for YAG capsulotomy were included in this prospective study. High-resolution digital retroillumination images were taken 2 weeks, 1 week and shortly before and immediately, 1 week and 2 weeks after Nd:YAG capsulotomy. The series of images were analysed using a dedicated image analysing software (PearlTracer). RESULTS: In total, 2431 Elschnig pearls were observed over the time-course of 4 weeks in this study. Of these, 535 pearls (30.6%) disappeared, and 503 pearls (27.6%) survived on the remaining capsule peripheral to the capsulotomy opening. The surviving pearls showed a significant decrease in size (20%) from immediately before to 10 min after capsulotomy. Within the first weeks after capsulotomy, there was a high number of newly appearing pearls, with 26% of all pearls being new between 1 and 2 weeks indicating high pearl turnover. CONCLUSION: Capsulotomy had an immediate impact on the morphology of PCO outside the capsulotomy opening, probably due to the direct mechanical impact of the laser shockwave.
版权:	The British journal of ophthalmology Moorfields Eye Hospital, London, UK.
全文:	DOI - The British journal of ophthalmology (DOI) EBSCO - HTML (需要捐款) HighWire Press - HTML (需要捐款) Ovid Technologies, Inc. - HTML (需要捐款)
科目:	Adult, Aged, Aged, 80 and over, Cataract, Female, Humans, Image Processing, Computer-Assisted, Laser Therapy, Lens Capsule, Crystalline, Male, Middle Aged, Observer Variation, Phacoemulsification, Prospective Studies, Recurrence, Software