Current opinion in ophthalmology · 2015
The role of lens extraction in the current management of primary angle-closure glaucoma.
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Trikha Sameer, Perera Shamira A, Husain Rahat, Aung Tin
Аннотация
PURPOSE OF REVIEW: Lens extraction for primary angle-closure glaucoma (PACG) is a subject of increased interest recently, with advocates promoting its benefits of anatomical opening of the angle, intraocular pressure (IOP) reduction and improved vision. The present review seeks to evaluate recent available evidence to provide clarity on this potential intervention within the armamentarium of approaches for PACG.
RECENT FINDINGS: The emergence of recent case-control studies, cohort studies and randomized controlled trials has provided a stronger evidence base to equip ophthalmic surgeons with the necessary information to utilize lens extraction in the management of PACG, and to consider whether this should be combined with trabeculectomy or goniosynechialysis. Imaging modalities such as anterior segment optical coherence tomography have yielded new insights into the mechanical features of the lens in angle closure, with the lens thickness and lens vault now quantifiable. A trend is emerging regarding the improvement in IOP control, reduced complication rates and reduced need for IOP-lowering medications in patients who undergo lens extraction for PACG. These issues are discussed, along with aspects of preoperative assessment and surgical techniques.
SUMMARY: Good outcomes in terms of long-term IOP control have been found following lens extraction for PACG. Lens extraction should be considered in patients with PACG, especially with hyperopia, or a thick and anteriorly vaulted lens.
RECENT FINDINGS: The emergence of recent case-control studies, cohort studies and randomized controlled trials has provided a stronger evidence base to equip ophthalmic surgeons with the necessary information to utilize lens extraction in the management of PACG, and to consider whether this should be combined with trabeculectomy or goniosynechialysis. Imaging modalities such as anterior segment optical coherence tomography have yielded new insights into the mechanical features of the lens in angle closure, with the lens thickness and lens vault now quantifiable. A trend is emerging regarding the improvement in IOP control, reduced complication rates and reduced need for IOP-lowering medications in patients who undergo lens extraction for PACG. These issues are discussed, along with aspects of preoperative assessment and surgical techniques.
SUMMARY: Good outcomes in terms of long-term IOP control have been found following lens extraction for PACG. Lens extraction should be considered in patients with PACG, especially with hyperopia, or a thick and anteriorly vaulted lens.