Ophthalmodynamometry in the Surgical Management of Carotid Arterial Disease

Lieberman, Warren J.; Schimek, Robert A.

doi:10.1001/archopht.1961.00960010203009

Cited by 5 publications

(3 citation statements)

References 9 publications

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“…The difference in the ophthalmic pressures in pairs of eyes for all 20 patients was 24.1 ± 3.03 (20) (23). In the remaining 15 eyes the OAP/BrAP ratio was 0.45 ± 0.04 (15), and the mean degree of stenosis in the ipsilateral ICAs was 36.5 ± 7.9 (15) %. Figure 4 summarizes the relationship between the percentage stenosis of the ICA determined by arteriography and the ratio of the OAP/BrAP in the ipsilateral eye.…”

Section: Resultsmentioning

confidence: 96%

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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Section: Resultsmentioning

confidence: 96%

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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“…In carotid occlusion, the fall in pressure in the ophthalmic artery has been recorded by ophthalmodynamometry as more than 20 per cent by Smith (1961a) and Lieberman and Schimek (1961); 29-86 per cent by Spalter (1959); 50 per cent by Bakay andSweet (1953)~ Hollenhorst, Wilbur, andSvien (1957), and Blodi and van Allen (1957); and 50-70 per cent by Hollenhorst (1958Hollenhorst ( , 1959. It has been suggested that a comparison of ophthalmodynamometric values obtained with the patient standing and supine enhances the sensitivity and diagnostic usefulness of the test.…”

Section: I00mentioning

confidence: 99%

Arteries of the orbit in the human being

Hayreh

1963

Journal of British Surgery

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“…Other au thors have suggested that a significant difference is more than 20% 8 or more than 25%. 9 The second crite rion is a formalization of the widely held notion that bilateral carotid occlusive disease leads to bilaterally low retinal artery pressures.…”

Section: Methodsmentioning

confidence: 95%