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|Type:||Artigo de periódico|
|Title:||Relationship Between High-order Aberrations And Age And Between High-order Aberrations And Refraction Errors [aberrações De Alta Ordem: Associação Com A Idade E Erros De Refração]|
Leite Arieta C.E.
|Abstract:||Purpose: To evaluate the relationship between high-order aberrations and refractive errors, and between high-order aberrations and age. Methods: An analytic retrospective study of patients that underwent aberrometry examination was conducted. All subjects examined with LadarWave® aberrometer at the Hospital de Olhos do Paraná from April 2004 to April 2005 were included in this study. The major inclusion criterion was 20/20 or better - corrected or not - visual acuity; and the major exclusion criterion, the presence of previous eye surgery or disease. The following variables were analyzed: age, refraction, spherical equivalent, and high-order aberrations wich were: coma, spherical aberration, others, and high-order root mean square (RMS). All data were obtained by LadarWave® aberrometry examination, under cycloplegia, utilizing only 6.5 mm pupil results. High-order aberrations up to eight order Zernike's coefficients were evaluated. Patients were divided into 6 groups according to refraction error and into 3 groups according to age. Results: Two hundred and one of 312 eyes were studied. The mean age was 33.9 ± 10.1, varying from 7 to 62 years of age. Among the refraction error groups hyperopic patients with less than -0.75 D astigmatism (Group 5) showed a higher amount of spherical aberration, and hyperopic patients with more than -0.75 D astigmatism (Group 6) showed a higher amount of other and high-order RMS aberrations. In the general comparison between the age groups, the 45 or older group (Group C) showed a higher amount of all the analyzed aberrations. Conclusion: a) There was a statistically significant positive relationship between hyperopia - with or without astigmatism - and spherical aberration and high-order RMS. b) There was a statistically significant positive relationship between age and all analyzed aberrations.|
|Appears in Collections:||Unicamp - Artigos e Outros Documentos|
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