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Using a technique called photographic ophthalmophakometry, the authors have measured the axial length of the eye in 1,530 subjects, ranging from 3 to 22 years of age, and have sought to correlate this with their refractive error. These investigators found that the axis increased in length by about 1.0 mm. between the third and thirteenth year and that this was usually compensated by flattening of both lens and cornea. However, there was much variation in the relative change in these two factors, and therefore, the refractive error was not predictable.
As the preface states, this monograph supplements an earlier presentation by the same authors. In addition, for the mathematically minded, there is a chapter called "The Computation of Optical Dimensions" by A. G. Bennett.
Regan EF. Refraction and Its Components, During the Growth of the Eye from the Age of Three.. Arch Ophthalmol. 1962;67(6):837. doi:10.1001/archopht.1962.00960020837026