Dr. SAVLEEN KAUR

Dr. JASPREET SUKHIJA, Dr.Shweta Chaurasia, Dr.Surishti Raj

Abstract

The purpose of this study was to detect the accuracy of determining extraocular muscle insertion distance (EOMD) from the limbus of previously operated extraocular muscles with the Swept Source Anterior Segment Optical Coherence Tomography (ASOCT) and compare it with wide field Ultrasound Biomicroscope (UBM).

Thirteen previously operated muscles of six subjects (Age 20.3 ± 4.4 years) were imaged on ASOCT as well as UBM before strabismus surgery. Muscle insertion could be identified in 12/13 cases on ASOCT and 10/13 cases on UBM. The difference between the machine reading and the calliper reading was ≤1mm in 9 cases on the ASOCT (69.2%); and 5 cases on the UBM (60%) p=0.03. The maximum muscle insertion distance from the limbus measured by the ASOCT was 13.8 mm and 10.4 mm by the UBM. ASOCT could identify the muscle insertion more accurately than UBM in resurgeries. ASOCT measurements were graded as more comfortable to the patient and quicker.