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At least 19 recordsLinked to original sources
PubMed1977

[Ear to retina time and ophthalmodynamometry after ligation of the common carotid artery in rabbits (author's transl)].

Unilateral ligation of the common carotid artery was performed in rabbits. Before ligation, immediately thereafter, and 6 weeks later the ophthalmic artery pressure was determined and at the same time a synchronous measurement of the ear to retina time was done on both sides. The results were statistically analyzed (Tables 1-4). Ligation of the right common carotid artery resulted in a highly significant difference in systolic ophthalmic artery pressure between the two eyes of 16.4 mm Hg, and in diastolic pressure one of 13.0 mm Hg. After ligation of the left similar pressure differences of (systolic) 17.8 mm Hg and (diastolic) 15.2 mm Hg were shown. During the following 6 weeks these differences decreased considerably, to 41.5% and 29.2% after ligation on the right and to 33.5% and 36.6% after ligation on the left. The ear to retina time was markedly prolonged on the side of the ligation. This resulted in a highly significant side difference of 0.42 s immediately after ligation on the right common carotid artery and 0.4 s immediately after ligation on the left side. After 6 weeks these differences were only slightly reduced, to 80% and 72.7% respectively. These animal experiments demonstrate clearly that an acute occlusion of one common carotid artery in rabbits can easily be diagnosed by ophthalmodynamometry as well as by synchronous measurement of the ear to retina time. In chronic occlusions determination of the ear to retina time is superior to pressure measurement. This is of particular interest since in these experiments an ophthalmodynamometric method was used that is much superior to the clinical method of ophthalmodynamometry.

Animals↗
PubMedDate not supplied

Bruits, ophthalmodynamometry and rectilinear scanning on transient ischemic attacks.

One hundred seventeen patients with clinical signs and symptoms of transient ischemic attacks (TIAs) were evaluated. All underwent clinical evaluation for bruit, ophthalmodynamometry, rapid sequence scintiphotography with rectilinear scanning and four-vessel cerebral angiography. The results of these tests were compared for reliability in predicting location of lesions causing transient ischemic attacks. Angiography remains the most accurate procedure in evaluating extracranial vascular lesions. When determination of bruits, ophthalmodynamometry and brain scanning are done together, accuracy is greater than when any one of the procedures is done alone.

Auscultation↗
PubMedDate not supplied

A comparative study of ophthalmodynamometry in hypertensive and non-hypertensive cases.

Ophthalmodynamometry was done on 100 hypertensive cases and 100 non-hypertensive cases who had clear media and no glaucoma. The ratio of the pressure mean ophthalmic: pressure mean brachial in the non-hypertensive group was 0.71:1.0, which rose to 0.78:1.0 in the hypertensive group. The ophthalmic humeral diastolic ratio increased with the severity of fundus changes. The pressure mean ophthalmic showed higher values with increasing grades of fundus changes. Those cases having a pressure mean opthalmic higher than the expected value in the hypertensive group as compared to the cases having a pressure mean ophthalmic lower than the expected value, were at a greater risk or had a graver prognosis. The importance of ophthalmodynamometry is stressed for the prognosis of hypertension along with the fundus examination.

Blood Pressure↗
PubMed1976

[The accuracy of ophthalmodynamometry in the diagnosis of occlusions of the carotid artery (author's transl)].

The aim of this study was to evaluate the diagnostic accuracy of ophthalmodynamometry in cases of occlusion of the internal carotid artery. Among the 29 patients examined with ODM there were 12 cases of such an occlusion, which were unknown to the ophthalmological examiner. All of them could be diagnosed exactly. When by means of ODM an occlusion in the region of the common or internal carotid was excluded the result was equally accurate. A decrease in ophthalmic blood pressure by 15% or a side difference of the same degree indicated in 80% of the cases an occlusion of the internal carotid. The ODM seems, therefore, to be a suitable test for finding or excluding such an occlusion.

Adult↗
PubMed1979

Suction ophthalmodynamometry in the diagnosis of carotid stenosis.

In a prospective evaluation of 39 patients who had arteriography for suspected carotid stenosis, suction ophthalmodynamometry correctly identified 86% of the patients who had radiographically demonstrable unilateral or asymmetric obstructions. This compares favorably with carotid compression tonography, oculoplethysmography, and Doppler flow studies. The false-positive rate was 27%, a figure higher than the latter two noninvasive tests.

Carotid Arteries↗
PubMed1979

Obstruction of the central retinal artery. Comparison of the ophthalmodynamometry measurements in relation to the time.

The clinical picture of occlusion of the central retinal artery was studied in 37 cases. The fundus findings were described in the most interesting cases. The cerebrovascular resistance and cerebral blood flow were calculated on the nonaffected side. The ophthalmic artery blood pressure was found to be elevated in 5 cases due to obstruction of the internal carotid artery distal to the origin of the ophthalmic artery. The ophthalmic blood pressure was decreased in the rest of the cases within the first 3 days after the onset of the clinical manifestations of the disease. After 3 weeks, a recanalization of the central retinal artery had occurred in most cases. Almost all cases show no side difference after 2 months. A minimal side difference was found in a very few cases only. In 54% of the patients, ophthalmodynamometry of the nonaffected side revealed, an elevation of the cerebrovascular resistance. The cerebral blood flow is compensated in 67% due to the elevation of the internal carotid blood pressure. The findings indicate that patients with elevated vascular resistance are susceptible to obstruction of the central retinal artery.

Adult↗
PubMedDate not supplied

Ophthalmodynamometry in internal carotid artery occlusion.

Retinal artery pressure was measured by ophthalmodynamometry in 15 patients with occlusion of the internal carotid artery in its extracranial part. Nine of the patients had severe neurological deficit whereas the remaining six had slight or intermittent symptoms. Retinal artery pressure was reduced on the side of the internal carotid artery occlusion in all patients studied. Near-zero low diastolic retinal artery pressure on the affected side was a common finding among patients with severe deficit and was also seen in some patients with slight deficit. Its presence strongly suggests occlusion of the ipsilateral internal carotid artery.

Adult↗
PubMed1977

[Value of ophthalmodynamography and ophthalmodynamometry in acute cerebrovascular processes].

Methods of examination are briefly described and findings are then reported for cerebral vascular processes. The results have been assessed in comparison with the angiographic picture. The authors conclude that both ophthalmodynamography and ophthalmodynamometry can be used to record haemodynamic changes resulting from stenosing vascular processes in the extra-cranial cerebral vascular area. The two methods are non-operative and involve little stress on the patient during examination so that they may be used for preliminary diagnostic purposes.

Acute Disease↗
PubMed1989

[Occlusion site and occlusion time of central artery occlusions: diagnostic references caused by changes in the collapse phenomenon of the central artery in ophthalmodynamometry].

The collapse of the central retinal artery in ophthalmodynamometry is typically altered in cases of central retinal artery occlusion. The alterations of the collapse phenomenon can be used to obtain the following information: (1) location of the occlusion; (2) duration of the occlusion. This information is of great value in determining the pathogenesis and therapy of central retinal artery occlusion.

Adult↗
PubMed1979

Ophthalmodynamometry: a reappraisal.

The accuracy of ophthalmodynamometry (ODM) was retrospectively analyzed in 36 patients who had ophthalmic examinations prior to carotid arteriography. In 75% of those patients, ODM correctly predicted the presence of absence of significant stenosis (ie, 50% or greater) or occlusion of the internal carotid artery. A 30% false-negative rate and 19% false-positive rate was found in this study. The accuracy was not improved when the examiner had more experience with the test. The accuracy of ODM with staff members who regularly perform the examination was 68% as compared to the ophthalmology residents' accuracy of 76%. Causes of false-negative and positive results include subjectivity of the examination, stenosis of arteries other than the internal carotids, and development of collateral circulation as was demonstrated arteriographically in 2 of our patients.

Aged↗
PubMed1977

Slit lamp ophthalmodynamometry.

A short clinical trial of the 'Dynoptor' Slit Lamp Ophthalmodynamometer has shown it to be a practical instrument. A mean O.A.P. of 52.3 mm/hg has been recorded.

Humans↗
PubMed1979

Binocular fundus reflectometry and ophthalmodynamometry in carotid occlusion.

Continuous bilateral simultaneous measurement of the circulation time between arm and ocular fundus and arm and earlobe was performed by fundus reflectometry (FRM). Differences in dye appearance time between the two ocular fundi were larger in cases of angiographically proved stenosis or occlusion of the common or the internal carotid artery. Prolonged dye appearance times in the earlobe were observed in occlusive disease of the common or external carotid artery. The harmless method of FRM seems to be useful in the detection of carotid occlusive disease and helpful in deciding whether carotid angiography should be performed.

Arm↗
PubMedDate not supplied

A comparison of the sensitivity of carotid compression tonography with ophthalmodynamometry in the diagnosis of internal carotid artery occlusive disease.

The cases of 100 consecutive patients with arteriographic evidence of carotid occlusive disease were reviewed. All 100 patients had undergone ODMY and CCT prior to carotid arteriography. A comparison of the sensitivity of ODM testing with CCT testing revealed the ODMY pressure differences were reliable in detecting carotid occlusive disease in only 70 of these 100 patients, whereas CCT testing detected decreased blood flow on the involved side in 95 of the 100 patients. The advantages of CCT testing are discussed, comparing certain limitations and contraindications often encountered with ODMY testing. The CCT test is more sensitive than ODMY testing and is easier to perform. In addition, the results of CCT are more objective and provide a permanent record which can be analyzed at any time to check for reproducibility. Overall, the CCT test appears to be a more suitable screening test than ODMY to study carotid occlusive disease.

Arterial Occlusive Diseases↗