Acute Elevations of Intraocular Pressure Following Nd:YAG Laser Posterior Capsulotomy

Ophthalmology (Impact Factor: 6.14). 08/1985; 92(7):973-6. DOI: 10.1016/S0161-6420(85)33930-1
Source: PubMed


We performed applanation tonometry preoperatively, hourly for the first four postoperative hours and on the first postoperative day in 66 eyes after Nd:YAG laser posterior capsulotomy in order to determine the nature of the acute intraocular pressure (IOP) elevation and the risk factors involved. Forty-one percent of eyes developed an intraocular pressure greater than 30 mmHg and 14% greater than 40 mmHg. The IOP spike occurred on the second postoperative hour in 35% of eyes. Patients with controlled glaucoma prior to capsulotomy had a significantly lower mean IOP rise than patients without glaucoma. Eyes with posterior chamber IOLs were less likely to develop an IOP greater than 30 mmHg than were aphakic eyes without IOLs. There was no correlation between the laser energy or the size of the capsulotomy and the IOP rise.

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    • "This is usually treated by Nd:YAG laser capsulotomy. However, some complications of this method have been reported, e.g. an increase of intraocular pressure (Ruderman et al., 1983; Slomovic & Parrish, 1985). Other complications such as retinal detachment (Powell & Oslon, 1995; Steinert et al., 1991), uveoscleritis (Herbort, 1994), or ciliochoroidal effusion (Schaeffer et al., 1989) were reported rarely. "
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    ABSTRACT: In a patient with uveitis who had been treated with Nd:YAG laser capsulotomy after cataract surgery, several episodes of acute hypotonia occurred which were associated with changes in clinical tests of the eye and of visual function. Immunosuppressive and immunomodulating treatment appeared to reverse the changes in intraocular pressure and normalise the test results. The significance of these observations is discussed.
    Vision Research 11/1997; 37(20):2937-42. DOI:10.1016/S0042-6989(97)00085-0 · 1.82 Impact Factor
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    ABSTRACT: The creation of a posterior capsulotomy utilizing a neodymium:YAG (Nd:YAG) laser is often followed by an increase in the intraocular pressure (IOP). In order to study the cause of this pressure rise, six eyes of three cynomolgus monkeys underwent extracapsular cataract extraction followed 2 to 3 months later by Nd:YAG laser capsulotomy. Eyes were evaluated clinically and examined histopathologically at 1 hour, 3 hours, 1 day, 3 days, 1 week, and 1 month after laser treatment. Although IOP did not increase after laser capsulotomy, outflow facility was decreased 80% from baseline levels at 3 hours, at 3 hours, 1 day, and 3 days. After laser treatment, the anterior chamber and meshwork contained fibrin, lens material, inflammatory cells, pigmented macrophages, erythrocytes, and free pigment. Most of these elements had cleared the meshwork by 1 month.
    Ophthalmology 11/1986; 93(10):1270-5. DOI:10.1016/S0161-6420(86)33575-9 · 6.14 Impact Factor
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    ABSTRACT: This study addresses three aspects of anterior segment Nd:YAG laser treatment--acute endothelial damage, as assessed by endothelial specular photomicrography (ESP), acute and long-term intraocular pressure (IOP) changes, and long-term iridotomy patency. The acute ESP and IOP changes in 26 eyes (21 patients) after Nd:YAG laser iridotomies were compared to 39 eyes (37 patients) after Nd:YAG laser capsulotomy. Similar endothelial damage occurred in both groups, although less damage was noted in the group of 9 eyes in which capsulotomies were undertaken in the presence of an intraocular lens. In a parallel study 53 eyes (44 patients) were followed for a mean of 83 weeks (19 months) from the time of Nd:YAG iridotomy. There were no late closures and no late rises in IOP. The level of acute IOP rise after treatment did not predict long-term IOP. We conclude that Nd:YAG iridotomy is an effective procedure in the long-term, and that both iridotomy and capsulotomy are accompanied by noteworthy acute endothelial changes and intraocular pressure rises.
    Albrecht von Graæes Archiv für Ophthalmologie 02/1988; 226(1):49-54. DOI:10.1007/BF02172718 · 1.91 Impact Factor
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