Korean J Ophthalmol.  1991 Jun;5(1):15-25. 10.3341/kjo.1991.5.1.15.

Effect of a modified rectus tuck on anterior ciliary artery perfusion

• Park C
• Min BM
• Wright KW

• KMID: 1735073
• DOI: http://doi.org/10.3341/kjo.1991.5.1.15

Abstract

Strabismus surgery results in the permanent interruption of anterior ciliary blood flow, predisposing the eye to anterior segment ischemia (ASI). A primate model was used to assess the effectiveness of a new muscle-scleral tuck for preserving anterior ciliary artery circulation. The model consisted of removing 3 rectus muscles from both eyes of 2 rhesus monkeys, then performing a tuck on the inferior rectus (IR) right eye while leaving the left IR as a control. Four weeks later, a modified tuck was performed on the virgin left IR. Fluorescein iris angiograms of both eyes were obtained, and preoperative angiograms at 5-15 sec. showed normal 360 degrees perfusion. Postoperative follow-up angiograms showed segmental superior temporal filling defects and preservation of perfusion in the distribution of the IR. Comparison of fellow eyes tucked vs control IR showed no difference in the filling pattern in both monkeys. Comparison of the same eye before and after tuck also showed essentially the same filling pattern in all 4 eyes with preservation of inferior circulation. Our conclusion is that the modified tuck preserves the anterior ciliary blood flow and may be useful as a muscle-strengthening procedure in patients predisposed to developing ASI.

Keyword

anterior segment ischemia; fluorescein iris angiogrm; modified rectustuck

MeSH Terms

Animals
Anterior Eye Segment/*blood supply
Ciliary Body/*blood supply
Disease Models, Animal
Fluorescein Angiography
Follow-Up Studies
Iris/blood supply
Ischemia/*prevention & control
Macaca mulatta
Oculomotor Muscles/physiology/*surgery
Perfusion