Long-term effect of cataract surgery on intraocular pressure after trabeculectomy

Abstract

After trabeculectomy, phacoemulsification provided better long-term IOP control than ECCE; however, the mean IOP was not significantly lower.

Effect of Phacoemulsification on Intraocular Pressure Control in Primary Open Angle Glaucoma Previously Treated by Trabeculectomy: A Case-Control Study

“…Similar findings were reported by others good IOP control [18,27], no bleb failure [10,13] no additional medications [15,16,24]. Other studies did, however, find an association with bleb failure [24,27].…”

“…Cataract extraction in eyes functioning filtering with a bleb is considered to be a risk [17]. Small incision cataract surgery is the technique of choice in this group [1,16], because there is less conjunctival dissection and inflammation [1]. Several studies report that PE has a minimal effect on the long-term mean IOP after T [2,10,12].…”

“…When cataract surgery is performed in filtered eyes there is a risk of early postoperative increase in IOP and loss of long-term IOP control [3,6,[14][15][16][17][18]. Others have found that IOP control can be retained after cataract extraction by increasing antiglaucoma medications [10], while some report that increased IOP is not observed in patients with previous filtering surgery and that none of their patients required additional antiglaucoma medications [19].…”

Comparing Anterior Segment Ocular Coherence Tomography (AS-OCT), Ultrasound Biomicroscopy (UBM) and Pentacam in Evaluating the Changes of the Anterior Segment Parameters after Phacoemulsification

“…This happens because of the equatorial age-related growth of the lens which makes the suspensory ligament slackens and the lens moves anteriorly [3]. Phacoemulsification for cataract or even lens extraction with IOL implantation in eyes with narrow angle can reduce the intraocular pressure (IOP), open the iridocorneal angles and deepen the anterior chamber [3][4][5][6][7][8][9][10].…”

Phacoemulsification in patients with previous trabeculectomy: role of 5-fluorouracil

“…The most widely held view is that cataract extraction by any technique performed in eyes with a previous filtering procedure will have an adverse effect on the previous filtering bleb. [4][5][6][7][8][9][10][11][12] The cause of this adverse effect is thought to be bleb failure owing to increased stimulus for fibrosis. This stimulus can come from postoperative inflammation or from conjunctival manipulation during phacoemulsification.…”