An analysis of one thousand consecutive cataract extractions / by F. P. Maynard.

  • Maynard, F. P.
Date:
[1903]
Catalogue details

Licence: In copyright

Credit: An analysis of one thousand consecutive cataract extractions / by F. P. Maynard. Source: Wellcome Collection.

Provider: This material has been provided by UCL Library Services. The original may be consulted at UCL (University College London)

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    shallow in 7, deep in 11, and normal in 24. The aqueous escaped earlj' in 29 out of the 42. It also escaped early in 11 other cases, in which the iris was not cut. Therefore tlie iris was cut 29 times out of 40 (29-1-11) cases, in which the aqueous escaped early, and it was cut 13 times (42—29), in all the remaining cases, in which the aqueous did not escape early, i.e., in 660 cases (700—40). In other words, the iris was cut in 68-5 per cent, of the cases when the aqueous escaped early, and in only 197 per cent, of those when it did not. In my own mind there is no doubt whatever that early escape of aqueous is the cause of involuntary iridectomy. Its escape is due usually either to the patienc screwing up his eye and so tilting tlie knife, or to the surgeon doing this by raising or lowering the handle unduly while making the section, or to his press- ing on the globe with the fixation forceps. An important detail also is to complete the puncture and counter-puncture before beginning to make the section, and then to complete the section without any halting or tilting of the knife. The accident is more likely to happen with deep set eyes and with small palpebral fissures. The section was completed and the cut piece of iris removed. If at all large and not up to the pupillary margin an iridectomy was then performed to avoid leaving the patient with a double pupil. No harm resulted from the accident. Too small an incision for the lens to be removed through was made in 25 cases. It was enlarged with scissors without difficult}'. Iritic adhesions to the anterior capsule were met with in 79 cases, of which 68 gave good, six indifferent, and five bad results. The bad results were not due to the complication, though some