Abstract
BackgroundThe aim was to evaluate the amplitude of accommodation using test objects designed with constant angular size corresponding to 6/6 visual acuity.MethodsIn total, 155 young volunteers with good ocular and systemic health aged between eight and 25-years were recruited for the study. A push‐up method was conducted, with the near‐vision target having a set of Landolt's broken circles. The angular size of the circles corresponded to a 6/6 visual acuity for various distances from 5.0-cm to 40-cm. To ensure precision of the object size, the electron beam lithographic technique was applied.ResultsA general trend in a reduction in amplitude with the progression of age is coincident with data from previous studies; however, the magnitudes of the volume of accommodation in our study are substantially lower.ConclusionTest objects with constant angular size can increase the accuracy of ‘push‐up’ accommodation measures.
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