Comparison of stereoacuity in patients of anisometropia, isometropia and emmetropia.
Indian J Ophthalmol
; 70(12): 4405-4409, 2022 12.
Article
em En
| MEDLINE
| ID: mdl-36453354
ABSTRACT
Purpose:
To compare the stereoacuity in patients with anisometropia, isometropia, and emmetropia.Methods:
A cross-sectional study was conducted on 1403 subjects (range 5-45 years) divided into anisometropes (n = 403), isometropes (n = 500), and emmetropes (n = 500). There were 258 amblyopic eyes among anisometropes and 156 amblyopic eyes among isometropes. Stereoacuity was measured using the Titmus stereo test consisting of a combination of contour targets.Results:
There were 675 males and 728 females. A significant (P < 0.001) reduction in stereoacuity was found in anisometropes as compared to isometropes and emmetropes. The stereoacuity was even worse in amblyopes as compared to non-amblyopes. Most patients with anisometropia of <3.0 D had fair stereoacuity. However, as the degree of anisometropia increased to >3.0 D, stereoacuity deteriorated gradually. Marked reduction of stereoacuity was observed in severe degree of anisometropia (>6.0 D). Overall, an anisometropia of ≥2.12 D was associated with reduced stereoacuity. Among the anisometropes, it was found to be the poorest in myopia, followed by myopia with astigmatism, hypermetropia with astigmatism, and hypermetropia.Conclusion:
The level of stereoacuity was worse in anisometropes as compared to isometropes and emmetropes. Amblyopes had a greater reduction in stereoacuity than non-amblyopes. Stereoacuity decreased as the degree of anisometropia increased. Among the anisometropes, myopes had worst stereoacuity than hypermetropes.Palavras-chave
Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Astigmatismo
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Anisometropia
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Ambliopia
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Hiperopia
/
Miopia
Tipo de estudo:
Diagnostic_studies
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Observational_studies
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Prevalence_studies
/
Risk_factors_studies
Limite:
Female
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Humans
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Male
Idioma:
En
Revista:
Indian J Ophthalmol
Ano de publicação:
2022
Tipo de documento:
Article