Neodymium:YAG Laser Zonulysis for Treatment of Lens Subluxation
1989; Elsevier BV; Volume: 96; Issue: 2 Linguagem: Inglês
10.1016/s0161-6420(89)32903-4
ISSN1549-4713
AutoresHungwon Tchah, Rhondi S. Larson, Bruce D. Nichols, Richard L. Lindstrom,
Tópico(s)Intraocular Surgery and Lenses
ResumoNine eyes with lens subluxation in seven patients (6 patients with Marfan's syndrome, 1 with idiopathic lens subluxation) were treated by neodymium:YAG (Nd:YAG) laser zonulysis. The procedure uses an Nd:YAG laser to lyse the zonules to obtain a clear aphakic visual axis. Pretreatment bestcorrected visual acuity was 20/60 or worse in eight eyes (6 eyes ≤ 20/200). Movement of the crystalline lens was achieved after zonulysis in all cases (100%), and a clear aphakic visual axis, sufficient to maintain aphakic correction without diplopia,or glare, was obtained in eight eyes (88.9%). The procedure was combined with optical iridotomy in three cases (33.3%). Five cases (55.6%) required more than one zonulysis treatment. Visual acuity improved two or more Snellen lines in all but one eye (7 eyes ≥ 20/60). Four cases had complications which included: increased intraocular pressure (IOP), mild iritis, recurrent migration of the lens into the visual axis, and crystalline lens damage. The final two complications necessitated eventual surgical removal of the lens. These results suggest that Nd:YAG laser zonulysis may be of benefit as an alternative treatment modality for selected patients with lens subluxation.
Referência(s)