Research Article

Prevalence of Heterophoria in Tibetan Grade-One Students: The Lhasa Childhood Eye Study

Table 4

Association of heterophoria with gender, amblyopia, ametropia, and anisometropia for grade-one students at near fixation in Lhasa, Tibet Autonomous Region, China.

ExophoriaEsophoriaOrthophoria
n, %OR (95% CI)n, %OR (95% CI)n, %

Gender
 Female188 (22.46)12 (0.24)1647 (77.30)
 Male223 (23.70)1.08 (0.86–1.34)0.515 (0.53)2.27 (0.44–11.73)0.33713 (75.77)
Ametropia
Emmetropia362 (22.75)14 (0.25)11225 (77.00)
 Myopia28 (41.18)2.43 (1.47–4.00)<0.011 (1.47)4.89 (0.56–42.52)0.1539 (57.35)
 Hyperopia20 (16.95)0.70 (0.43–1.16)0.172 (1.69)6.38 (1.15–35.28)0.0396 (81.36)
Amblyopia
 Nonamblyopia402 (22.92)16 (0.34)11346 (76.74)
 Amblyopia9 (37.50)2.25 (0.92–5.01)0.081 (4.17)16.02 (1.81–141.96)0.0114 (58.33)
 Anisometropia
Nonanisometropia386 (22.88)17 (0.40)11328 (76.72)
 Anisometropia14 (30.43)1.47 (0.78–2.78)0.240 (0.00)00.9932 (69.57)

The prevalence of heterophoria was associative with corresponding factors.