Journal List > Korean J Ophthalmol > v.19(2) > 1024405

Hahm, Yoon, Baek, and Kong: The Clinical Course of Recurrent Exotropia after Reoperation for Exodeviation

Abstract

Purpose

To determine the clinical course of recurrent exotropia after a secondary operation for exotropia.

Methods

The surgical results in 58 patients who had undergone reoperation for recurrent exotropia (reoperation group) were retrospectively investigated and compared with those of 100 patients who had undergone primary strabismus surgery only (primary operation group) using survival analysis.

Results

In the reoperation group, recurrence occurred in 19 of the 58 patients (33%). Survival analysis revealed that the recurrence rates in the reoperation group were significantly lower than those in the primary operation group at the same follow-up period after the corresponding strabismus surgery (p=0.018). The distant esodeviation at the postoperative 1st week after reoperation was the only significant factor associated with the recurrence after reoperation (p=0.01).

Conclusions

Exotropia did recur after a secondary operation, although the recurrence rate was lower than that after a primary operation only.

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Fig. 1.
Comparison of survival curves between the primary operation group (1°Op Group) and the reoperation group (Reop Group) (p=0.018 by Log-rank test).
kjo-19-140f1.tif
Table 1.
Comparisons of recurrence rates according to the follow-up (F/U) duration between the primary operation group (1°Op Group) and reoperation group (Reop Group)
F/U duration (Months) Recurrence rate (%)
Reop group 1°Op group
1 5 10
3 11 22
12 25 48
24 35 56
41 51 65
51 60 72
Table 2.
Comparisons between the success group (SG) and recurrence group (RG) in the reoperation group
  SG (n=41) RG (n=17) p-value
Gender (male: female) 7: 10 16: 25 0.88
Age at 1°op (years) 4.9±2.0 5.4±2.2 0.46
Duration of exotropia before 1°op (months) 18.3±15.6 10.3±11.3 0.06
Duration between 1°op & recurrence (months) 12.1±12.4 15.2±21.5 0.49
Age at 2°op (years) 8.4±3.1 9.0±3.4 0.59
Duration between 1o and 2o op (months) 42.5±22.6 43.9±23.4 0.82
1°preop deviation at distance (PD) 34.3±6.66 33.8±6.74 0.82
1°postop deviation at 1 week (PD) -0.6±3.61 -0.2±2.90 0.71
1°postop deviation at 1 month (PD) 2.3±4.5 3.6±6.1 0.37
2°preop deviation at distance (PD) 29.5±5.75 29.1±5.37 0.82
2°postop deviation at 1 week (PD) -3.5±4.93 0.2±5.5 0.01∗
2°postop deviation at 1 month (PD) -3.3±5.01 -2.1±6.07 0.43

Values represent mean±standard deviation. 1°: primary, 2°: secondary, op: operation, preop: preoperative, postop: postoperative, PD: prism diopters. ∗: p<0.05 by Student t-test.

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