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2018 ; 8
(1
): 24-30
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Factors affecting surgical outcome of intermittent exotropia
#MMPMID29675346
Lee CM
; Sun MH
; Kao LY
; Lin KK
; Yang ML
Taiwan J Ophthalmol
2018[Jan]; 8
(1
): 24-30
PMID29675346
show ga
PURPOSE: The purpose of this study was to investigate the factors affecting
surgical outcome in intermittent exotropia. DESIGNS: This was a retrospective
interventional study. METHODS: Intermittent exotropic patients who had undergone
surgical correction with a postoperative follow-up period of 1 month or more were
included in the study. Surgical success was defined as an alignment between 10
prism diopters (PD) of exotropia or 5 PD of esotropia at 1 month. After data
collection, data were analyzed in SPSS version 23 software. The main outcome
measures were the factors affecting surgical outcome. RESULTS: We included 101
patients, including 52 (51.5%) male and 49 (48.5%) female. Among them, 62 (61.4%)
patients achieved surgical success. Undercorrection was the primary reason of
surgical failure. Multivariate regression analysis showed that a larger
preoperative angle of deviation was associated with unfavorable surgical outcome
(P = 0.053, odds ratio [OR] =0.97, 95% confidence interval [CI] = 0.94-1.00), and
the presence of postoperative day 1 (POD 1) diplopia correlated significantly
with higher surgical success (P = 0.001, OR = 4.54, 95% CI = 1.80-11.43). The
presence of POD 1 diplopia was highly associated with POD 1 esotropia (P = 0.005,
OR = 7.26, 95% CI = 1.84-28.58). CONCLUSION: In intermittent exotropia, larger
preoperative angle of deviation may predict a lower surgical success rate.
Despite a worrisome issue, the presence of diplopia on first POD is associated
with immediate postoperative alignment of esotropia and predicts a higher
surgical success.