J Korean Ophthalmol Soc.  2014 Sep;55(9):1361-1365. 10.3341/jkos.2014.55.9.1361.

Comparison of Surgical Outcomes in Patients with Small Refractive Error and Intermittent Exotropia

• Yeo YD
• Lee SY

• KMID: 2217121
• DOI: http://doi.org/10.3341/jkos.2014.55.9.1361

Abstract

PURPOSE
To identify differences in the refractive error of postoperative intermittent exotropia patients.
METHODS
A total of 71 patients who had an average refractive error of 2 D and a follow-up of more than 6 months after unilateral recession-resection (R&R) for intermittent exotropia were included in this study. Patients were divided into 3 groups according to their refractive error: Group 1, < or =-1.0 D; Group 2, -1.0 D ~ +1.0 D; Group 3, > or =+1.0 D. The amounts of deviation 1 day after surgery and 6 months after surgery were evaluated.
RESULTS
Out of the 71 total patients included in this study, group 1 included 20 patients, group 2 included 39, and group 3 included 12. The average refractive error in groups 1, 2, and 3 was -2.2 +/- 0.9 D, 0.0 +/- 0.4 D and +1.9 +/- 0.9 D, respectively. The angle of deviation 1 day after surgery was measured in the 3 groups; A result labeled '+' was considered to be exodeviation and a result labeled '-' was considered to be esodeviation. The angle of deviation results for groups 1, 2, and 3 one day after surgery were -6.7 +/- 6.0 PD, -7.5 +/- 5.8 PD and -7.3 +/- 5.9 PD (p = 0.937), respectively, and the results 6 months after surgery were +2.2 +/- 4.3 PD, +4.7 +/- 5.9 PD and +1.8 +/- 2.8 PD (p = 0.076), respectively. Among the 3 groups, no statistically significant difference was observed in postoperative angle of deviation after 6 months.
CONCLUSIONS
In basic intermittent exotropia patients with an average refractive error of 2 D, the amount of refractive error makes no difference in strabismus surgical outcomes.

Keyword

Angle of deviation; Basic type; Intermittent exotropia; Refractive error

MeSH Terms

Esotropia
Exotropia*
Follow-Up Studies
Humans
Refractive Errors*
Strabismus

Reference

References

1. Keech RV, Stewart SA. The surgical overcorrection of intermittent exotropia. J Pediatr Ophthalmol Strabismus. 1990; 27:218–20.

2. Edelman PM, Brown MH, Murphree AL, Wright KW. Consecutive esodeviation… then what. Am Orthopt J. 1988; 38:111–6.

3. Raab EL, Parks MM. Recession of the lateral recti. Early and late postoperative alignments. Arch Ophthalmol. 1969; 82:203–8.

4. Kim HS, Suh YW, Kim SH, Cho YA. Consecutive esotropia in intermittent exotropia patients with immediate postoperative over-correction more than 17 prism diopters. Korean J Ophthalmol. 2007; 21:155–8.

5. Seo MS, Park HS, Park YG, Kim JB. A study on the consecutive esotropia after intermittent exotropia surgery. J Korean Ophthalmol Soc. 1994; 35:1327–34.

6. Jang JH, Park JM, Lee SJ. Factors predisposing to consecutive esotropia after surgery to correct intermittent exotropia. Graefes Arch Clin Exp Ophthalmol. 2012; 250:1485–90.

7. Rosenbaum AL, Santiago AP. Clinical strabismus management: principles and surgical techniques. Philadelphia: Saunders. 1999; 170–1.

8. Scattergood KD, Brown MH, Guyton DL. Artifacts introduced by spectacle lenses in the measurement of strabismic deviations. Am J Ophthalmol. 1983; 96:439–48.