Study of ocular aberrations with age

• Autor(a) principal: Athaide, Helaine Vinche Zampar [UNIFESP]
• Data de Publicação: 2009
• Outros Autores: Campos, Mauro Silveira de Queiroz [UNIFESP], Costa, Charles [UNIFESP]
• Tipo de documento: Artigo
• Idioma: eng
• Título da fonte: Repositório Institucional da UNIFESP
• dARK ID: ark:/48912/0013000015br7
• DOI: 10.1590/S0004-27492009000500003
• Texto Completo: http://dx.doi.org/10.1590/S0004-27492009000500003; http://repositorio.unifesp.br/handle/11600/5268
• topic: Ocular physiological phenomena; Corneal topography; Aging; Refractive errors; Refraction, ocular; Diagnostic technique, opthalmologic; Visual acuity; Lens, crystalline; Fenômenos fisiológicos oculares; Topografia da córnea; Envelhecimento; Erros de refração; Refração ocular; Técnicas de diagnóstico oftalmológico; Acuidade visual; Cristalino

INTRODUCTION: Aging has various effects on visual system. Vision deteriorate, contrast sensitivity decreases and ocular aberrations apparently make the optical quality worse across the years. PURPOSE: To prospective evaluate ocular aberrations along the ages. METHODS: Three hundred and fifteen patients were examined, 155 were male (39.36%) and 160 were female (60.63%). Ages ranged from 5 to 64 year-old, the study was performed from February to November, 2004. Patients were divided into 4 age-groups according to IBGE (Instituto Brasileiro de Geografia e Estatística) classification: 68 patients from 5 to 14 year-old, 55 patients from 15 to 24 year-old, 116 from 25 to 44 year-old and 76 from 45 to 67 year-old. All patients had the following characteristics: best corrected visual acuity > 20/25, emmetropia or spherical equivalent < 3.50 SD, refractive astigmatism < 1.75 CD on cycloplegic refraction, normal ophthalmologic exam and no previous ocular surgeries. This protocol was approved by Federal University of São Paulo Institutional Review Board. Total optical aberrations were measured by H-S sensor LadarWave® Custom Cornea Wavefront System (Alcon Laboratories Inc, Orlando, FLA, USA) and were statistically analysed. Corneal aberrations were calculated using CT-View software Version 6.89 (Sarver and Associates, Celebration, FL, USA). Lens aberrations were calculated by subtraction. RESULTS: High-order (0.32 e 0.48 µm) and ocular spherical aberrations (0.02 e 0.26 µm) increased respectively in child and middle age groups. High order (0.27 µm) and corneal spherical aberrations (0.05 µm) did not show changes with age. Lens showed a statistically significant spherical aberration increase (from -0.02 to 0.22 µm). Vertical (from 0.10 to -0.07 µm) and horizontal coma (from 0.01 to -0.12 µm) presented progressively negative values with aging. CONCLUSION: High-order and spherical aberrations increased with age due to lens contribution. The cornea did not affect significantly changes observed on ocular aberrations.