A review on methods used to record and analyze microfluctuations of the accommodation in the human eye.

P. P. Monticone; M. Menozzi

doi:10.2971/jeos.2011.11003

Journal of the European Optical Society - Rapid publications, Vol 6 (2011)

A review on methods used to record and analyze microfluctuations of the accommodation in the human eye.

P. P. Monticone, M. Menozzi

Abstract

In steady state conditions, the accommodation of the human eye presents fluctuations. These fluctuations, called microfluctuations, are described in the literature as having an amplitude of less than 1D and a frequency up to a few Hz. Since Collinsâ€™ report about microfluctuations in 1937 [Collins 1937], several methods have been used to record and analyze microfluctuations. Results reported in the literature are partially in disagreement; we show how these disagreements could be due to the different methodologies used to record and analyze the accommodation signals. We classify and discuss properties of instruments used to record the microfluctuations and methods used to elaborate the resulting signals; to conclude we suggest how to validate the instrumentation and which analysis method to adopt when investigating microfluctuations.

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