Dynamics of accommodation evaluated by an automated accommodometer in normal persons Nobuko Nakajima 1 , Yo Nakamura 2 , Aoi Komuro 2 , Yoko Ikeda 3 , Chie Sotozono 4 , Shigeru Kinoshita 5 1Nakajima Eye Clinic 2Shijo-Karasuma Komuro Eye Clinic 3Oike-Ganka Ikeda Clinic 4Department of Ophthalmology, Kyoto Prefectural University of Medicine 5Department of Frontier Medical Science and Technology for Ophthalmology, Kyoto Prefectural University of Medicine pp.1197-1202
Published Date 2017/8/15
DOI https://doi.org/10.11477/mf.1410212365
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Abstract Purpose:To report dynamics of accommodation evaluated by an accommodometer in normal persons.

Cases and Method:This study was made on 217 eyes of 217 healthy persons show responded by 4 diopters or over of accommodation. The series comprised 80 males and 137 females. The age ranged from 6 to 30 years, average 13.3 years. State of refraction included hyperopia 7%, emmetropia 12%, light myopia of less than −3 diopters 45%, moderate myopia between −3 and −6 diopters 31%, and high myopia 5%. Change in refraction was documented as each case looked at an equally moving targets. The observed changes were plotted as approximating curve as function of time.

Results:Multiple correlation coefficient averaged 0.90±0.09. It showed significant correlation with first-order, second-order and constant(p<0.05 each). In 211 out of 217 cases(97%), the symmetrical axis of the parabola was dislocated from the targets. The degree of dislocation averaged 2.77±1.99 second.

Conclusion:Dynamics of accommodation during accommodative stimulation approximated a parabola curve.

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