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Ab‐interno erbium (Er):YAG laser sclerostomy with iridotomy in Dutch cross rabbits
Author(s) -
Hill Richard A.,
Le Minh T.,
Yashiro Hideko,
Constan Chris,
Treadway Anthony,
Stern David,
Lesiecki Michael L.,
Brown Lisa,
Berns Michael W.
Publication year - 1993
Publication title -
lasers in surgery and medicine
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.888
H-Index - 112
eISSN - 1096-9101
pISSN - 0196-8092
DOI - 10.1002/lsm.1900130511
Subject(s) - laser , erbium , er:yag laser , ophthalmology , medicine , optics , surgery , physics
An ab‐interno technique using a pigmented rabbit model has been developed that uses a pulsed erbium:YAG laser to create an iridotomy with a sclerostomy through the same corneal incision. Laser energy was delivered with an articulated arm terminating in side‐firing (850 or 650 μm OD) or end‐firing (850 or 400 μm OD) fiber optic endoprobes, which allowed iridotomies and sclerostomies, respectively, to be created. Initially, sclerostomies (8–10, 8 mJ/300 μs pulses) and basal iridotomies (1–3, 4 mJ/200 μs pulses) were created with the larger probes. Problems encountered with this technique included corneal decompensation and rapid formation of peripheral anterior synechiae with occlusion of sclerostomies. The smaller endoprobes were then used to create midperipheral iridotomies and sclerostomies utilizing the same energy parameters. Sclerostomies created in this manner remained patent in the first postoperative week until the animals were sacrificed to obtain material for histologic study. © 1993 Wiley‐Liss, Inc.