Changes of the Anterior Segment after Clear Cornea Phacoemulsification
Feldner B., Meyer M., Schröder A., Rüfer F., Erb C.
Medical High School Hannover, Depart. of Ophthalmology, Hannover
Purpose: Previously studies have shown a reduction of the intraocular pressure (IOP) after phacoemulsification. The purpose of this study was to examine if this IOP-reduction is referring to changes in the anterior eye segment.
Method: Fifty patients with clear cornea phacoemulsification (30 male:20 female; mean age 70±11.3 years) were included in this study. After an ophthalmological examination, the anterior segment (cornea-thickness, anterior chamber depth, anterior chamber angle) was analysed by the non-contact 3D- slit beam- topographic system Orbscan II (Bausch&Lomb, Heidelberg) at the preoperative, first-postoperative day and 3 month afterwards.
Results: All cataract-operations proceeded without any difficulties. The preoperative visual acuity at 0.26±0.17 increased to 0.6±0.27 3-month postoperative. The IOP at the operated eye dropped from 16±3.25 mm Hg (preoperative) to 13.25±2.5 mm Hg 3 month later (p<0.0001), while the contralateral not-operated eye showed no changes. The structures of the anterior segment changed as followed (p-value is refered to preoperative).
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