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Mathematical consideration of aqueous outflow after Trabeculo-Electropuncture (TEP)

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Summary

The obtainable postoperative intraocular pressure following a TEP in a glaucoma patient with an intraocular pressure of 30 mm Hg is calculated in accordance with the concept that there is no outflow of aqueous humor along Schlemm's canal. If aqueous humor reaches all collector channel openings in the surgical area without resistance, the postoperative intraocular pressure reads 14.75 mm Hg. This intraocular pressure is obtained at a point when a collector channel of 1 mm length and of 32 μm in diameter or two collector channels of 27 μ in diameter or five collector channels of 22 μ in diameter establish connection with the trabecular opening.

Zusammenfassung

Der erreichbare postoperative Augendruck nach einer TEP bei einem Glaukompatienten mit dem Augendruck von 30 mm Hg wird unter der Vorstellung berechnet, daß es keinen Kammerwasserabfluß im Schlemmschen Kanal entlang gibt. Wenn das Kammerwasser alle Collector channel Öffnungen im Operationsgebiet ohne Widerstand erreicht, dann ist der postoperative Augendruck 14,75 mm Hg. Dieser intraokulare Druck wird dann erreicht, wenn ein Collector channel von 1 mm Länge und einem Durchmesser von 32 μ oder zwei Collector channel mit einem Durchmesser von 27 μ oder fünf Collector channel mit einem Durchmesser von 22 μ mit der Trabekelöffnung in Verbindung stehen.

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Hoffmann, F. Mathematical consideration of aqueous outflow after Trabeculo-Electropuncture (TEP). Albrecht von Graefes Arch. Klin. Ophthalmol. 204, 87–93 (1977). https://doi.org/10.1007/BF00414709

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  • DOI: https://doi.org/10.1007/BF00414709

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