Higher order aberrations and retinal image quality during short-term accommodation in myopic and non-myopic children.
Ophthalmic Physiol Opt
; 43(4): 827-841, 2023 07.
Article
em En
| MEDLINE
| ID: mdl-37140840
ABSTRACT
INTRODUCTION:
Despite the known associations between near work and myopia, and retinal image quality and eye growth, accommodation-induced changes in higher order aberrations (HOA's) and retinal image quality in children with different refractive errors are poorly understood.METHODS:
Ocular HOA's were measured using a Hartmann-Shack wavefront sensor (COAS-HD, Wavefront Sciences) in 18 myopic and 18 age- and sex-matched non-myopic children during short-term accommodation tasks (four demands of 0, 3, 6 and 9 D) presented using a Badal optometer. Eighth order Zernike polynomials were fitted across a 2.3 mm pupil diameter to determine refractive power vectors (M, J180 and J45 ) and the accommodation error, and a 4 mm pupil was used for HOA analyses. Retinal image quality was examined using the visual Strehl ratio based on the optical transfer function (VSOTF) for third to eighth radial orders only.RESULTS:
Most refractive error group differences were observed for the 6 and 9 D demands. Myopic children underwent greater changes in with-the-rule astigmatism (J180 ), higher order and third order RMS values, primary vertical ( C 3 - 1 ) and horizontal coma ( C 3 1 ), and several other individual Zernike coefficients compared with non-myopic children (all refractive error group by demand interaction p-values of ≤0.02). Non-myopic children exhibited a greater negative shift in primary ( C 4 0 ) and positive shift in secondary spherical aberration ( C 6 0 ) (both refractive error group by demand interaction p-values of ≤0.002). The VSOTF degraded for the 6 and 9 D demands in both groups, but the myopic children underwent a greater mean (SE) reduction from 0 D of -0.274 (0.048) for the 9 D demand, compared with -0.131 (0.052) for the non-myopic children (p = 0.001).CONCLUSION:
These results may have implications for the association between near work, accommodation and myopia development, particularly related to the use of short working distances during near tasks.Palavras-chave
Texto completo:
1
Base de dados:
MEDLINE
Assunto principal:
Erros de Refração
/
Miopia
Tipo de estudo:
Diagnostic_studies
Limite:
Child
/
Humans
Idioma:
En
Revista:
Ophthalmic Physiol Opt
Ano de publicação:
2023
Tipo de documento:
Article
País de afiliação:
Austrália