Laser Peripheral Iridoplasty
| Autor: | Shakeel Shareef |
|---|---|
| Rok vydání: | 2021 |
| Předmět: | |
| Zdroj: | Operative Dictations in Ophthalmology ISBN: 9783030530570 Operative Dictations in Ophthalmology ISBN: 9783319454948 |
| DOI: | 10.1007/978-3-030-53058-7_57 |
| Popis: | Argon laser peripheral iridoplasty involves placement of contraction burns within the iris stroma in the far periphery either with or without a laser goniolens to treat appositional angle closure after an laser peripheral iridotomy (LPI) has been performed to rule out relative pupillary block. The key to successful Argon laser peripheral iridoplasty (ALPI) involves laser settings of low energy, long duration, and large spot size causing the peripheral iris to contract toward the “slow” contraction burn, relieving angle closure, thereby facilitating access of aqueous to the irido-corneal angle (Surv Ophthalmol 52:279–288, 2007; Glaucoma – the requisites in ophthalmology, St Louis, 2000). During laser application, the endpoint is visible shrinkage of the peripheral iris. The power setting should be adjusted until visible stromal contraction is noted. The foot pedal should be fully depressed for the entire duration during laser delivery avoiding premature applications. Deepening of the AC should be noted in the vicinity of the laser burn. A common cause for failure of ALPI is to treat the mid-peripheral iris instead of the far periphery. Approximately six spots are applied in each quadrant treating the entire circumference. Given the low-energy setting, ALPI results in minimal inflammation that can be treated with a short course of topical steroids. Familiarity with gonioscopy fundamentals including indentation is important for diagnosis and pre-laser planning (University of Iowa Health Care Ophthalmology and Visual Sciences, www.gonioscopy.orgg). |
| Databáze: | OpenAIRE |
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