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104. Jahrestagung der Deutschen Ophthalmologischen Gesellschaft 2006
Abstract
Abstract
SO.07.10 Can rebound tonometry redundantise general anaesthesia for IOP measuring in small children between 0-3 years? Kruse P., Rieger R., Rieck P., Ruokonen P. C.
Universitätsmedizin Berlin, Augenklinik, Campus Virchow Klinikum Objective: To compare intraocular pressure (IOP) measurements by non invasive rebound tonometry to hand held applanationtonometry in young children.
Methods: In this retrospective comparative case series we reviewed the clinical records of 25 eyes of 13 children with buphthalmus or megalocornea who underwent examinations under general anaesthesia to screen out congenital glaucoma. IOP was measured by rebound tonometry (iCARE®) as screening method 24 hours before investigations in general anesthesia including Draegers hand-held tonometry.
Results: Mean IOP was 25,43±7,4 SD mmHg acquired by Draegers applanation tonometer and 26,63±8,04 SD mmHg with the iCARE®. In 9 eyes (36%), the difference between both methods was within 1 mmHg, 18 eyes(72%) showed a difference within 3 mmHg, and in 7 eyes (28%) the difference was more than 3 mm Hg. In 6 of these 7 eyes IOP was overestimated with a maximum deviation of 7 mm Hg, whereas only one eyes were understimated by 4 mmHg.
Conclusions: Rebound tonometry seems to be a useful method for screening to glaucoma in small children without general anaesthesia. Nevertheless, as further examinations like measurement of corneal diameters, sciascopy, gonioscopy or ultrasound biometry are necessary for diagnosis of congenital glaucoma, meassuring the IOP by rebound tonometry cannot replace but might help to reduce the number of examinations performed in general anaesthesia.
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