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목적 : To directly compare the surgical outcome of convergence insufficiency (CI) type with that of basic or pseudo DE (divergence excess) type exotropia and to compare the long-term outcome of bilateral lateral rectus recession (BLR) and unilateral recession and resection (RR) procedure for CI type exotropia.
방법 : The medical record of CI type, basic type and pseudo-DE type intermittent exotropia patients who were followed-up ≥2 years after BLR or RR procedure were reviewed. The surgical outcome of CI group was compared with basic group and pseudo-DE group. Among the CI group, the mean near-distance difference and the cumulative percentage of success were compared between BLR and RR group.
결과 : Twenty-one CI, 79 basic and 19 pseudo-DE type intermittent exotropes were included in the analysis. The cumulative probability of survival of CI group was not different from that of basic (P=0.73) or pseudo DE group (P=0.74). The cumulative probabilities of survival were not different after BLR and RR procedure for CI group (P=0.16). At the first postoperative week, near-distance difference was successfully reduced below 10△ in all patients of both BLR and RR group, but finally 14.3% showed CI type again. The ratio of returning to CI type was not different according to surgical procedure.
결론 : The anatomical success rate of CI type exotropia was not inferior compared to that of basic type or pseudo DE type exotropia. In CI type exotropes, bilateral lateral rectus recession is also an effective surgical option both for surgical success and the reduction of near-distance difference.
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