Carotid Compression Test and Direct Measurement of Ophthalmic Artery Pressure in Man

Borrâs, A.; Martínez, Antonio; Méndez, Manuel Sánchez

doi:10.1016/s0002-9394(69)90992-1

Cited by 5 publications

(2 citation statements)

References 4 publications

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“…7 ' 14 Changes in the ophthalmic arterial pressure resulting from increasing degrees of stenosis of the internal carotid artery remain to be defined. 18 " 19 In this study we have applied the procedure of Langham and To'mey to measure the intraocular pulse/pressure relation and the ophthalmic arterial pressure in a group of patients with either unilateral or bilateral complete or nearly complete occlusions of the internal carotid arteries, and compared the results to an age-matched group of normal subjects. Studies were repeated in 5 patients following surgical endarterectomy and the results assessed in relation to angiographic and clinical findings.…”

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confidence: 99%

Carotid occlusive disease: effect of complete occlusion of internal carotid artery on intraocular pulse/pressure relation and on ophthalmic arterial pressure.

Langham¹,

Tomey²,

Preziosi³

1981

Stroke

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SUMMARY The intraocular pressure (IOP), tbe intraocular pulse to pressure (pulse/pressure) relationship, and the ophthalmic arterial pressure have been measured in 20 patients with either unilateral or bilateral hemodynamically significant lesions of tbe internal carotid arteries (ICA) as determined from arteriography. Studies were repeated in 5 of the patients after surgical endarterectomy on the obstructed ICA. In age matched normal subjects the pulse/pressure relations were symmetrical in pairs of eyes, and the ophthalmic arterial systolic pressure was 89.0 ± 2.1 mm Hg; this was 66 ± 1% of the brachial arterial systolic pressure. In 19 of 20 patients with carotid occlusive disease in this study the IOP, pulse amplitudes and the pulse/pressure relationships differed in pairs of eyes. The ophthalmic arterial systolic pressure on the sides with 95 to 100% ICA stenosis was 49.9 ± 4.05 mm Hg, which was 33 ± 3% of the brachial arterial systolic pressure. In the remaining eyes the degree of stenosis of the ipsilateral ICA was 363 ± 7.9%; the corresponding eyes had an ophthalmic arterial systolic pressure of 70.1 ± 5.18 mm Hg, which was 45 ± 4% of the brachial arterial systolic pressure. Endarterectomy of the occluded arteries caused a significant increase in the ophthalmic arterial pressure on the ipsilateral side and a smaller increase in the contralateral eye; these changes were associated with a statistically significant increase in the intraocular pulse and improvement in the pulse/pressure relation. Stroke, Vol 12, No 6, 1981A NON-INVASIVE clinical procedure for measurements of the intraocular pulse to pressure (pulse/pressure) relationship and of the ciliary arterial pressure has recently been described by Langham and To'mey. 1The intraocular pulse reflects the intraocular arteriolar vascular pulse caused by the bolus of blood that enters the eye with each heartbeat. Manometric studies in animals and man have shown the intraocular pulse to disappear at pressures equal to the ophthalmic arterial pressure and have shown that experimentally induced ligation of the common carotid artery caused corresponding decreases in the 2 pressures.* 13 Langham and To'mey used a scleral suction cup to induce increased pressure in the eye and a pressure sensor resting freely against the cornea to record the decrease of intraocular pulse as a function of intraocular pressure. Theoretical and manometric studies have established that the Langham pneumatic tonometer used in the procedure measures both the intraocular pressure and the pulsatile nature of the intraocular pressure with high fidelity.4 "* The procedure of Langham and To'mey does not depend on knowledge of the suction pressure to derive the intraocular pressure as is the case for the alternate procedures of suction ophthalmodynamometry Changes in the ophthalmic arterial pressure resulting from increasing degrees of stenosis of the internal carotid artery remain to be defined. "19 In this study we have applied the procedure of Langham and To'mey to measure the intraocula...

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confidence: 99%

Carotid occlusive disease: effect of complete occlusion of internal carotid artery on intraocular pulse/pressure relation and on ophthalmic arterial pressure.

Langham¹,

Tomey²,

Preziosi³

1981

Stroke

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“…, arm-to-retina circulation time (Gilland et al 1965, David et al 1966, corneal pulsation (Nornes et al 1971), tonography (Miles et al 1967, Solis et al 1972, isotope angiography (Damast et al 1972), retinal fluorophotometry (Trokel 197 1, Winkelmann et al 1971, Niesel & Gassmann 1972, and pressure measurements in the ophthalmic artery (Borras et al 1969).…”

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confidence: 99%

Simultaneous Fluorescein Angiography of Both Irides

Jensen

1973

Acta Ophthalmologica

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A description is given of an arrangement with two synchronized motor cameras for simultaneous fluorescein angiography of both irides intended for use in diagnosing stenosis of the internal carotid artery. Observations made in angiograms from four patients with carotid stenosis are reported. On digital compression of one common carotid in healthy individuals, diminished and delayed iridic fluorescence was observed on the contra‐lateral side. ‐ The procedure does not cause any discomfort to the patients; it is safe and can be performed on out‐patients.

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Ocular Plethysmography and Suction Ophthalmodynamometry in the Diagnosis of Carotid Occlusive Disease

Carney¹

1978

Microvascular Anastomoses for Cerebral Ischemia

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Carotid Compression Test and Direct Measurement of Ophthalmic Artery Pressure in Man

Cited by 5 publications

References 4 publications

Carotid occlusive disease: effect of complete occlusion of internal carotid artery on intraocular pulse/pressure relation and on ophthalmic arterial pressure.

Carotid occlusive disease: effect of complete occlusion of internal carotid artery on intraocular pulse/pressure relation and on ophthalmic arterial pressure.

Simultaneous Fluorescein Angiography of Both Irides

Ocular Plethysmography and Suction Ophthalmodynamometry in the Diagnosis of Carotid Occlusive Disease

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