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This book is intended to serve as a practical manual for the ophthalmologist who plans to equip and supervise a tonography unit either in his private office or as part of a glaucoma referral center. Procedures are presented in elementary cook-book style with an abundance of illustrations. The text is somewhat repetitious, but the author has deliberately employed this feature "to insure sound instruction with resultant good technique."
Following a brief and intentionally oversimplified theoretical discussion, there is a detailed presentation of tonographic equipment and technique. Considerable stress is placed upon the need for technically good tracings and a chapter is devoted to sources of error in technique. This approach is to be commended and I would strongly endorse the author's viewpoint that "a tonogram presenting gross artefacts is best discarded and repeated another day." Sections on applanation tonometry and the perilimbal suction cup are included.
A large section is
Forbes M. Tonography and the Glaucomas. Arch Ophthalmol. 1965;74(1):140. doi:10.1001/archopht.1965.00970040142029
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