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In Reply.—Dr Carney has manifested some of the same "exaggeration and oversight" of which he unfairly accuses our investigative team. A careful review of our article will disclose the information that our "preliminary evaluation of a new technique for [suction ophthalmodynamometry] ODM, identified as ocular plethysmodynamography (OPDG)" was directed "to an assessment of the instrument package and the technique involved in its use."
Anyone who has had experience with classical ODM will immediately appreciate the advantages of OPDG. We do not suggest the ophthalmic artery pressure (OAP) alone is an important predictive measurement, but we do suggest that this method for OAP determination "deserve[s] notice and merit[s] corroboration."
On a positive note, our experience with the analysis of ocular pulse-wave morphology and pulse delay in several hundred patients indicates that this additional modality would be a valuable adjunct to OPDG in the early detection of extracranial obstructive disease. We
SAND BJ. Ophthalmodynamometry-Reply. Arch Surg. 1975;110(12):1518. doi:10.1001/archsurg.1975.01360180088027
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