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The final status of cryoextraction of the lens and the application of cryotechniques to other forms of ophthalmic surgery is not yet clear. Therefore we welcome comments from those who have had experience. Dr. Kelman, one of the pioneers in this country, has provided an excellent atlas of his own techniques. It should be studied by all attempting cryoextraction for the first time and is worth review even by those who have had considerable experience. Reference is almost entirely to the author's own instrument which many operators find clumsy to use. A comparative analysis of the good and bad features of currently available instruments would have been helpful. Whether or not the use of cryoextraction significantly reduces the number of complications in cataract surgery can not be stated. Dr. Kelman discusses complications which may occur at the operating table but I know of no longterm comparative studies between this and