PMID: 9547804Apr 21, 1998Paper

Influences of the accommodative stimulus and aging on the accommodative microfluctuations

Optometry and Vision Science : Official Publication of the American Academy of Optometry
K ToshidaT Tokoro

Abstract

The effects of the accommodative stimulus and age on the accommodative microfluctuations were investigated in human subjects. Accommodative responses were measured by using an infrared (IR) optometer, and accommodative microfluctuations were quantified by power spectrum analysis. Two frequency bands were determined: low frequency components (< 0.5 Hz, LFC) and high frequency components (1.3 to 2.2 Hz, HFC). Among younger subjects, the changes in the HFC in response to the accommodative stimuli differed between subjects. The activity of the HFC reached a peak in the center of the accommodation range, whereas the activity of the LFC was its maximum in the presence of darkness or blur in the over-accommodation range. Smaller changes in the magnitude of the HFC were observed in older subjects. Although the LFC may be controlled neurologically, the HFC seems to arise from mechanical and elastic properties of the lens, and may be modulated by other physiological rhythmic variations.

Citations

May 7, 2009·Optometry and Vision Science : Official Publication of the American Academy of Optometry·Kristin E SchultzMelissa D Bailey
Jan 31, 2012·Clinical & Experimental Optometry : Journal of the Australian Optometrical Association·Trine Langaas, Patricia M Riddell
Dec 25, 2003·Vision Research·John A Mordi, Kenneth J Ciuffreda
Oct 3, 2002·Ophthalmic & Physiological Optics : the Journal of the British College of Ophthalmic Opticians (Optometrists)·G HeronL S Gray
Sep 8, 2018·Journal of Vision·Steven A CholewiakMartin S Banks
Aug 22, 2006·Ophthalmic & Physiological Optics : the Journal of the British College of Ophthalmic Opticians (Optometrists)·Mingxia ZhuD Robert Iskander
Oct 20, 2004·Ophthalmic & Physiological Optics : the Journal of the British College of Ophthalmic Opticians (Optometrists)·Mingxia ZhuD Robert Iskander
Aug 26, 2015·Ophthalmic & Physiological Optics : the Journal of the British College of Ophthalmic Opticians (Optometrists)·W Neil Charman, Gordon Heron
Sep 6, 2018·Vision·Niall J HynesEdward A H Mallen
Nov 6, 2015·Optometry and Vision Science : Official Publication of the American Academy of Optometry·Jae-Hyung KimSungmin Hyung

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