Der Ophthalmologe : Zeitschrift der Deutschen Ophthalmologischen Gesellschaft · 2001
[Measuring corneal volume. A possible quality parameter in cataract surgery?].
Аннотация на английскомСтатьяНазвание и аннотация: Перевод пока не подготовлен
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Kirchhoff A, Böhm H, Schäferhoff C, Beck R, Guthoff R
Аннотация
BACKGROUND: Phacoemulsification of the lens induces changes in the inner corneal architecture. This study quantified the corneal pre- and postoperative volumes.
METHODS: Corneal volume was measured by noninvasive corneal topography using Orbscan. Following phacoemulsification with lens implantation, 56 eyes of 55 persons were examined by three Orbscan tests: preoperatively and 6 h and 24 h after cataract surgery. Healon was used as viscoelastic medium.
RESULTS: The mean corneal volume in the 3-mm central corneal diameter was 4.64 mm3 preoperatively, 5.36 mm3 6 h postoperatively, and 5.05 mm3 24 h postoperatively. Corneal volume thus increased by 0.72 mm3 within 6 h after phacoemulsification and decreased by 0.31 mm3 over the following 18 h.
CONCLUSION: Orbscan offers a noninvasive method for obtaining useful and accurate information in defining the corneal volume. This method may represent a new parameter for describing the function of corneal endothelial cells in cataract surgery.
METHODS: Corneal volume was measured by noninvasive corneal topography using Orbscan. Following phacoemulsification with lens implantation, 56 eyes of 55 persons were examined by three Orbscan tests: preoperatively and 6 h and 24 h after cataract surgery. Healon was used as viscoelastic medium.
RESULTS: The mean corneal volume in the 3-mm central corneal diameter was 4.64 mm3 preoperatively, 5.36 mm3 6 h postoperatively, and 5.05 mm3 24 h postoperatively. Corneal volume thus increased by 0.72 mm3 within 6 h after phacoemulsification and decreased by 0.31 mm3 over the following 18 h.
CONCLUSION: Orbscan offers a noninvasive method for obtaining useful and accurate information in defining the corneal volume. This method may represent a new parameter for describing the function of corneal endothelial cells in cataract surgery.