J Korean Ophthalmol Soc > Volume 54(1); 2013 > Article
Journal of the Korean Ophthalmological Society 2013;54(1):92-96.
DOI: https://doi.org/10.3341/jkos.2013.54.1.92    Published online January 15, 2013.
Postural Effect on Intraocular Pressure in Gas-Filled Eyes after Vitrectomy.
Chan Hee Moon, Kyung Seek Choi, Mi Ri Rhee, Sung Jin Lee
1Department of Ophthalmology, Soonchunhyang University College of Medicine, Seoul, Korea. wismile@schmc.ac.kr
2Myeong Eye Clinic, Seoul, Korea.
유리체절제술과 가스주입술 후 체위에 따른 안압의 변화
Department of Ophthalmology, Soonchunhyang University College of Medicine1, Seoul, Korea
Myeong Eye Clinic2, Seoul, Korea
To assess the influence of body position on intraocular pressure (IOP) in patients who underwent vitrectomy and intraocular gas tamponade. METHODS: Patients who did not undergo any surgery were defined as Group 1. The remaining patients were divided into 3 groups according to the surgery performed (Group 2; cataract surgery, Group 3; vitrectomy and cataract surgery, Group 4; vitrectomy with intraocular gas tamponade and cataract surgery). IOP was measured by a non-contact tonometer, Goldmann applanation tonometer, and Tono-Pen in the sitting, supine, and prone positions. RESULTS: The difference of IOP measured in the sitting position among the 4 groups was not significant. IOP was significantly elevated by 2.04 mm Hg on average when the posture was changed from sitting to supine or prone in all 4 groups. The IOP discrepancy between supine and sitting positions was significantly greater in group 4 by 3.61 mm Hg than the other groups (p = 0.003, ANOVA test). The IOP difference between the prone and sitting position was also significantly higher in group 4 by 3.82 mm Hg than the other groups (p = 0.001, ANOVA test). CONCLUSIONS: The patients with vitrectomized gas tamponade eyes had a mean IOP increase of 3.82 mm Hg when the position was changed from sitting to prone. When performing vitrectomy and intraocular gas tamponade on patients in the prone position, an IOP elevation should be monitored thoroughly.
Key Words: Body position;Intraocular gas;Intraocular pressure;Pars plana vitrectomy

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