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      Ocular Pulsation Correlates with Ocular Tension


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          In 26 random out-patients, including 13 treated glaucoma patients and ocular hypertensives, the higher the ocular tension, the greater the pulse amplitude, by Alcon pneumotonometry, at a statistically significant level. In a single untreated hypertensive, when 2-hourly pneumotonometry was done for 24 h, the correlation was similar and significant. The higher the diastolic blood pressure, the higher the ocular pulsation, also significantly. Pulsation is suggested to be a pump, the choroid being the piston, contributing (1) to an increase in the outflow of aqueous humour and (2) to a homeostatic mechanism contributing to normalization of the intra-ocular pressure, wherein pulsation increases or decreases, as the intra-ocular pressure increases or decreases, respectively.

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          Author and article information

          Ophthalmic Res
          Ophthalmic Research
          S. Karger AG
          10 December 2009
          : 24
          : 6
          : 338-343
          aUniversity Ophthalmology Unit, Department of Surgery, and cMedical Statistics Unit, University of Edinburgh, UK; bDepartment of Ophthalmology, Yamanashi Medical College, Tamaho, Yamanashi, Japan
          267190 Ophthalmic Res 1992;24:338–343
          © 1992 S. Karger AG, Basel

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          : 09 March 1992
          : 09 June 1992
          Page count
          Pages: 6
          Original Paper

          Vision sciences,Ophthalmology & Optometry,Pathology
          Choroidal pulsation,Ocular pulsation,Aqueous pump,Intra-ocular tension,Choroidal piston


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