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A New Instrument

J. H. Ch. HILGERS, M.D.

Arch Ophthalmol. 1961;66(3):341-342.

	Since this article does not have an abstract, we have provided the first 150 words of the full text PDF and any section headings.

One of the important steps in the procedure of cataract extraction with zonulolysis is the application of enzyme to the zonular fibers. Each surgeon uses a different instrument and a different technique for the application of chymotrypsin. This seems to suggest that the ideal instrument and technique has not yet been devised.

It is possible, I believe, to compile several stipulations to which a good cannula for the application of enzyme should correspond.

1. The cannula should not be a straight tube; by accident it may act as a javelin by piercing the delicate tissues inside the eye, because even small jerky movements at the plunger end may cause unfavorable results at the tip end of the cannula. A straight cannula which is partially flexed or bent, has identical disadvantages.
   
2. The enzyme stream should be kept from flowing from the cannula with too much force. In a straight cannula the downward
   

Author Affiliations
Aruba, Netherlands Antilles

Footnotes
Submitted for publication April 5, 1961.

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