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November 1957

Further Studies on the Use of Digital Pressure in Cataract SurgeryI. Optimal Length of Time for Application of Digital Pressure

Author Affiliations

Miami, Fla.
From the Department of Ophthalmology, Mt. Sinai Hospital of Greater Miami, and the Division of Ophthalmology, University of Miami School of Medicine.

AMA Arch Ophthalmol. 1957;58(5):641-646. doi:10.1001/archopht.1957.00940010659003

In a previous communication1 it was shown that application of five minutes of digital pressure after the retrobulbar injection, following the ideas of Atkinson2-5 and Chandler,6 constitutes a very definite clinical safeguard against the loss of vitreous during cataract surgery. It was further shown that, thus far, the best experimental criterion for judging this safeguarding action of digital pressure lay in the depth and duration of the accompanying ocular hypotony. It has accordingly now become desirable to determine the optimal length of time for application of digital pressure; for, in an operation already considerably lengthened by the use of modern corneoscleral suture techniques, it becomes important to know if the same safety may be achieved in less than five minutes or, conversely, if even greater safety is induced by more than five minutes of digital pressure.

Materials and Methods  The material for this study consisted of 60

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