Holmium YAG laser sclerostomy ab externo for refractory glaucoma

Onda, Eiji; Andō, Hiroshi; Jikihara, Shuichi; Kitazawa, Yoshiaki

doi:10.1007/bf00176883

Cited by 4 publications

(2 citation statements)

References 9 publications

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“…A thulium, holmium, chromium-doped YAG crystal laser[ 20 ] has been evaluated to create thermal ab externo sclerostomies. The near infrared laser, 2100 nm, is a long-pulsed, compact, self-contained, solid-state laser operating in the near-infrared.…”

Section: Laser-based Filtration Proceduresmentioning

confidence: 99%

Lasers in primary open angle glaucoma

Sihota¹

2011

Indian J Ophthalmol

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Lasers have been used in the treatment of primary open angle glaucoma (POAG) over the years, with the hope that they would eventually replace medical and surgical therapy. Laser trabeculoplasty (LT) is an application of argon, diode, or selective laser energy to the surface of the trabecular meshwork to increase the aqueous outflow. The mechanisms by which intraocular pressure (IOP) is lowered could be mechanical, biologic, or by division of adjacent cells. It is commonly used as an adjunct to medical therapy, but is contraindicated if the angle is obstructed, e.g., peripheral anterior synechia (PAS) or developmental glaucomas. About 75% of individuals will show a significant fall in IOP after argon laser trabeculoplasty (ALT), and the response is similar with selective laser trabeculoplasty (SLT). The effects of LT are not always long lasting, with about 10% of individuals showing a rise in IOP with every passing year. Laser thermal sclerostomy, ab interno or externo, is an alternative to other full-thickness filtration procedures. Longer wavelengths in the infrared range have water-absorptive characteristics that facilitate perforation of the sclera. These lasers can be used to avoid intraocular instrumentation and minimize conjunctival trauma.

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Section: Laser-based Filtration Proceduresmentioning

confidence: 99%

Lasers in primary open angle glaucoma

Sihota¹

2011

Indian J Ophthalmol

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“…More recently, microinvasive glaucoma surgery (MIGS) has emerged as a new treatment for open-angle glaucoma (OAG) allowing for minimal tissue disruption, a more favorable risk profile, and faster recovery as compared to conventional trabeculectomy or glaucoma drainage device implantation [3]. Subconjunctival filtering tracts surgeries aim at creating subconjunctival filtration (bleb formation) without opening the conjunctiva [4][5][6] and showed a promising results regarding its efficacy on IOP control.…”

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confidence: 99%

Efficacy and safety of ab-externo radiofrequency sclerostomy in management of open-angle glaucoma

Fathallah,

Abdel-Hamid,

Salah

et al. 2023

Rossijskij oftalʹmologičeskij žurnal

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Purpose. To evaluate the efficacy and safety profile of an innovative ab-externo technique in the management of uncontrolled open angle glaucoma (OAG) through creating filtering tracts subconjunctivally.Material and methods. This is a randomized clinical trial including 40 eyes (40 patients) divided into 2 equal groups, group (A), underwent ab-externo radiofrequency sclerostomy and group (B), underwent ab-externo radiofrequency sclerostomy with subconjunctival injection of mitomycin C. Intraoperative and postoperative complications, visual acuity, intraocular pressure (IOP) and bleb status were evaluated for 6 months.Results. The mean preoperative IOP was 28 ± 3.5 mm Hg reduced to 21.9 ± 5.2 mm Hg (p = 0.001) in group (A) and was 29.4 ± 3.4 mm Hg reduced to 20.8 ± 6.3 mm Hg (p = 0.001) in group (B), 6 months postoperatively. Both groups showed a significant percent reduction of IOP 15.1 ± 17.3%, 27.1 ± 22.4% in groups (A) and (B) respectively with group (B) showing lower values on days 1, 7, 14, 30, 90 and 180 but was not statistically significant. The number of anti-glaucoma medications was significantly reduced in both groups. Heat radiation to the cornea from radiofrequency waves was obvious in early cases — 5 (25%) in group (A), and 3 (15%) in group (B) that was reversible within the first 3 months postoperatively. Shallow anterior chamber and choroidal detachment were the most encountered early postoperative complication, which all managed conservatively.Conclusion. Ab-externo radiofrequency sclerostomy offers a promising minimally invasive, quick and simple procedure in management of early and moderate cases of OAG with effective reduction of IOP and number of glaucoma medication.

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Laser Filtration Procedures

Leen¹

2009

Ophthalmology

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Holmium YAG laser sclerostomy ab externo for refractory glaucoma

Cited by 4 publications

References 9 publications

Lasers in primary open angle glaucoma

Lasers in primary open angle glaucoma

Efficacy and safety of ab-externo radiofrequency sclerostomy in management of open-angle glaucoma

Laser Filtration Procedures

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