J Korean Ophthalmol Soc.  1988 Aug;29(4):625-629.

The Quantitative Measurement of the Oculocardiac Reflex

• Min BM
• Park WC
• Kim CS

Abstract

The oculocardiac reflex was quantitatively measured in 58 patients with strabismus. The reflex was observed in some patients when the medial rectus, lateral rectus, and inferior oblique were stretched, and resultant oculocardiac reflex was analysed in quantitative manner. The results were as follows. 1. The positive oculocardiac reflex, more than 10% of heart rate decrement or arrythmia, was observed in 43.1% of tracted medial rectus muscles, 40.0% of inferior oblique muscles, and 28.0% of lateral recturs muscles. 2. The incidence of the oculocardiac reflex was increased with increasing the traction force. 3. The threshold of the oculocardiac reflex was varied from 50 to 450 gm in the medial rectus, 150 to 500 gm in the lateral rectus, and 100 to 400 gm in the inferior oblique muscles. 4. The depth of the bradicardia was 17.0% in the medial rectus, 5.9% in the lateral rectus, and 9.8% in the inferior oblique muscles by the 100 gm unit of the traction forces.

MeSH Terms

Arrhythmias, Cardiac
Heart Rate
Humans
Incidence
Muscles
Reflex
Reflex, Oculocardiac*
Strabismus
Traction