Abstract
The effect of segmental scleral buckling (SB) on ocular circulation was evaluated by measurements of the ocular pulse amplitude (PA) and the ophthalmic artery pressure (OAP). In this study the OAP was defined as the intraocular pressure (IOP) at which the PA disappeared during increasing IOP. Twenty four patients with unilateral rhegmatogenous retinal detachment who underwent SB of varying extent were studied; the unoperated fellow eyes served as controls. Both the OAP and the ophthalmic perfusion pressures (OAP minus IOP) decreased significantly (p < 0.01) as the area of SB treatment increased. Follow-up measurements showed that the OAP was relatively lower up to 3 months postoperatively than after 3 months, and then remained stable. Our results indicated that SB affects the ocular pulse measurements and may decrease ocular blood flow because of decreased ophthalmic perfusion pressure, probably due to increased choroidal vascular resistance, and that the greater the extent of the SB treatment, the greater the possibility of decreased ocular blood flow.
Full text
PDF
Selected References
These references are in PubMed. This may not be the complete list of references from this article.
- Diddie K. R., Ernest J. T. Uveal blood flow after 360 degrees constriction in the rabbit. Arch Ophthalmol. 1980 Apr;98(4):729–730. doi: 10.1001/archopht.1980.01020030723016. [DOI] [PubMed] [Google Scholar]
- Dobbie J. G. Circulatory changes in the eye associated with retinal detachment and its repair. Trans Am Ophthalmol Soc. 1980;78:503–566. [PMC free article] [PubMed] [Google Scholar]
- Johnson M. W., Han D. P., Hoffman K. E. The effect of scleral buckling on ocular rigidity. Ophthalmology. 1990 Feb;97(2):190–195. doi: 10.1016/s0161-6420(90)32606-4. [DOI] [PubMed] [Google Scholar]
- LANGHAM M. E. A NEW PROCEDURE FOR THE ANALYSIS OF INTRAOCULAR DYNAMICS IN HUMAN SUBJECTS. Exp Eye Res. 1963 Oct;2:314–324. doi: 10.1016/s0014-4835(63)80032-9. [DOI] [PubMed] [Google Scholar]
- Langham M. E., To'Mey K. F. A clinical procedure for the measurements of the ocular pulse-pressure relationship and the ophthalmic arterial pressure. Exp Eye Res. 1978 Jul;27(1):17–25. doi: 10.1016/0014-4835(78)90049-0. [DOI] [PubMed] [Google Scholar]
- Sanborn G. E., Miller N. R., Langham M. E., Kumar A. J. An evaluation of currently available, noninvasive tests of carotid artery disease. Ophthalmology. 1980 May;87(5):435–439. doi: 10.1016/s0161-6420(80)35216-0. [DOI] [PubMed] [Google Scholar]
- Silver D. M., Farrell R. A., Langham M. E., O'Brien V., Schilder P. Estimation of pulsatile ocular blood flow from intraocular pressure. Acta Ophthalmol Suppl. 1989;191:25–29. doi: 10.1111/j.1755-3768.1989.tb07083.x. [DOI] [PubMed] [Google Scholar]
- Yoshida A., Feke G. T., Green G. J., Goger D. G., Matsuhashi M., Jalkh A. E., McMeel J. W. Retinal circulatory changes after scleral buckling procedures. Am J Ophthalmol. 1983 Feb;95(2):182–188. doi: 10.1016/0002-9394(83)90012-0. [DOI] [PubMed] [Google Scholar]