The commoner diseases of the eye : how to detect and how to treat them . by both remedies. Preparation of the field of operation is morenecessary in cataract extraction than, perhaps,in any other operative procedure on the eye. Thedirections given on page 486 should be strictlyobserved. There are almost as many operations for cat-aract as there are operators, but the usualmethod of extracting senile cataract is the so-called modified peripheral linear operation ofvon Graefe. The instruments needed are a pairof fixation forceps, a wire speculum, a narrowGraefe cataract knife—whose well sharpene
The commoner diseases of the eye : how to detect and how to treat them . by both remedies. Preparation of the field of operation is morenecessary in cataract extraction than, perhaps,in any other operative procedure on the eye. Thedirections given on page 486 should be strictlyobserved. There are almost as many operations for cat-aract as there are operators, but the usualmethod of extracting senile cataract is the so-called modified peripheral linear operation ofvon Graefe. The instruments needed are a pairof fixation forceps, a wire speculum, a narrowGraefe cataract knife—whose well sharpenedpoint pierces readily, and by its own weight, thetesting dm 111, a pair of iris forceps, a metal orshell iris repositor, a pair of iris scissors, and acystotome. Examine them with a lens and be sure that CATARACT AND OTHER AFFECTIONS 303 they are perfectly bright and clean and that thecutting instruments have a razor edge. Onedrop of a freshly prepared 5% solution of co-cain, or, better, this solution reinforced by a 1%solution of holocain, is dropped into the eve. Testing Drum. every minute for five minutes. The speculum isintroduced by sliding the upper branch under theupper lid; then the lower branch beneath thelower lid. It should not be opened too widelylest it cause pain. The patient should now be
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