Journal List > J Korean Ophthalmol Soc > v.51(10) > 1008666

Lee, Lee, and Lee: The Factors Influencing the Visual Acuity and Streoacuity Outcome in Refractive Accommodative Esotropia

Abstract

Purpose

To evaluate the factors affecting the visual acuity and stereoacuity of patients with refractive accommodative esotropia who have successful optical alignment obtained by refractive error management.

Methods

The charts of 60 patients, including medical history, age of onset, chief complaint at first visit, age at which glasses were first worn, refractive error, visual acuities with and without glasses, angle of deviation, and stereoacuity were retrospectively reviewed.

Results

The mean follow-up period was 59.20 ± 40.26 months, and the mean hypermetropia at the initial visit was 4.90 ±1.75 diopters (D). Fifty-three patients had decreased hypermetropia, with a mean of 0.94 ± 0.91 D, while seven patients had increased hypermetropia, with a mean of 0.38 ± 0.17 D. The mean deviation at the initial visit was 28.40 ± 9.05 prism diopters (PD) at near without glasses and decreased to 3.20 ± 3.50 PD with glasses at the final visit. Children who had anisometropia at the initial visit had a higher prevalence for amblyopia at the final visit (p = 0.000). However, the degree of hypermetropia, age at onset, deviation before glasses correction, interval from onset to glasses correction, and amblyopia at diagnosis were not significant risk factors for amblyopia or anomalous streoacuity at the final visit.

Conclusions

The degree of hypermetropia, age at onset, deviation before glasses correction, interval from onset to glasses correction, and amblyopia at diagnosis were not significant risk factors for amblyopia. However, anisometropia was a significant risk factor for the development of amblyopia in patients with refractive accommodative esotropia, and these children should receive careful and long-term follow-up management.

References

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Table 1.
Factors associated with amblyopia at final visit
Factors Amblyopia*(–)(n = 51) Amblyopia*(+)(n = 9) Probability
Age onset < 2 years 20 (39.2%) 3 (33.3%) p = 0.738
Constant esodeviation on initial visit 1 (2.0%) 2 (22.2%) p = 0.010
≥ 2 line difference between two eyes 14 (27.5%) 5 (55.6%) p = 0.095
≥ 6 Mo interval from onset to 1st glasses 32 (62.7%) 5 (55.6%) p = 0.683
≥ 5.5 D hyperopia on initial visit 19 (37.3%) 4 (44.4%) p = 0.783
Anisometropia 3 (5.9%) 5 (55.6%) p = 0.000
Deviation§ ≥ 30 PD 24 (47.1%) 4 (44.4%) p = 0.092

Mo = month; D = diopters; PD = prism diopters.

* Linear Snellen or Snellen equivalent visual acuity with best correction

Chi-square test

More than 1.5 diopter difference between two eyes

§ deviation at near on initial visit without correction.

Table 2.
Factors associated with stereoacuity outcome at final visit
Factors < 100 sec of arc (n =17) ≥ 100 sec of arc (n = 43) Probability*
Age onset < 2 years 4 (23.5%) 19 (44.2%) p = 0.138
Constant esodeviation on initial visit 0 (0.0%) 3 (7.0%) p = 0.264
≥ 2 line difference between two eyes 5 (29.4%) 14 (32.6%) p = 0.776
≥ 6 Mo interval from onset to 1st glasses 8 (47.1%) 29 (67.4%) p = 0.822
≥ 5.5 D hyperopia on initial visit 7 (30.4%) 16 (37.2%) p = 0.776
Anisometropia 2 (11.8%) 6 (14.0%) p = 0.822
Deviation§ ≥ 30 PD 5 (29.4%) 23 (53.5%) p = 0.092

Mo = month; D = diopters; PD = prism diopters.

* Chi-square test

Linear Snellen or Snellen equivalent visual acuity with best correction

More than 1.5 diopter difference between two eyes

§ deviation at near on initial visit without correction.

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