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Abstract #8109 Published in IGR 4-3
Correlation between quantity of silicone oil emulsified in the anterior chamber and high pressure in vitrectomized eyes
Avitabile T; Bonfiglio V; Cicero A; Torrisi B; Reibaldi ARetina (Philadelphia, Pa.) 2002; 22: 443-448
PURPOSE: To assess the existence of any correlation between the quantity of silicone oil emulsified in the anterior chamber and the incidence of high intraocular pressure (IOP) in vitrectomized eyes. METHODS: Forty-nine eyes of 49 patients underwent vitrectomy with silicone oil injection as an adjuvant procedure. At the time of observation, between September 1999 and September 2000, 13 eyes (26.5%) were phakic, 23 (47%) were pseudophakic, and 13 (26.5%) were aphakic. Ultrasound biomicroscopy, slit-lamp biomicroscopy, and gonioscopy were performed to quantify the presence of silicone oil emulsified in the anterior chamber. RESULTS: The 13 phakic eyes did not have a high IOP. In eight of the 13 eyes, ultrasound biomicroscopy detected only scarce oil emulsification in the anterior chamber (0.304 mm); in five of the 13 eyes, gonioscopy and ultrasound biomicroscopy did not detect anterior chamber oil emulsification. Fourteen of 23 pseudophakic eyes had a high IOP; of these, ultrasound biomicroscopy detected an abundant amount of anterior chamber oil emulsification (0.922 mm). Nine of 23 pseudophakic eyes did not have a high IOP; of these, ultrasound biomicroscopy detected little anterior chamber oil emulsification (0.209 mm). The 13 aphakic eyes had a high IOP; of these, ultrasound biomicroscopy detected an abundant amount of anterior chamber oil emulsification (0.795 mm). The coefficient of correlation for the measurements obtained was 0.98 (F = 62.3, p = 0.05; t = 11.1, p = 0.001). CONCLUSION: This study showed a high correlation between the incidence of high IOP and the quantity of emulsified silicone oil in the anterior chamber.
T. Avitabile, MD, Department of Medical-Surgical, Section of Ophthalmology, University of Catania, Italy
Classification:
9.4.11.5 Glaucomas associated with vitreoretinal surgery (Part of: 9 Clinical forms of glaucomas > 9.4 Glaucomas associated with other ocular and systemic disorders > 9.4.11 Glaucomas following intraocular surgery)
