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A LONGITUDINAL STUDY OF THE AGE‐DEPENDENCE OF HUMAN OCULAR REFRACTION‐I. AGE‐DEPENDENT CHANGES IN THE EQUIVALENT SPHERE
Author(s) -
Saunders Harold
Publication year - 1986
Publication title -
ophthalmic and physiological optics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.147
H-Index - 66
eISSN - 1475-1313
pISSN - 0275-5408
DOI - 10.1111/j.1475-1313.1986.tb00698.x
Subject(s) - refraction , longitudinal sample , longitudinal study , sample (material) , longitudinal data , optometry , demography , optics , psychology , physics , developmental psychology , statistics , mathematics , medicine , sociology , thermodynamics
Following on from a cross‐sectional analysis of refraction data (Saunders, 1981), the present paper attempts the evaluation of serial recordings of a new sample of refractive corrections using longitudinal methods. This study compares the results of the cross‐sectional and longitudinal methods, investigates whether or not the latter supports the conclusions of the former, examines to what accuracy this is achieved and, where the results differ, seeks a reason for this. It is demonstrated that in spite of such differences the two methods coincide in their conclusions.