Abstract
By relaxing the contracted focus-adjustment muscles around the eyeball, such as the ciliary and extraocular muscles, improvement of the pseudo-myopia is expected. This understanding has led to the accommodation training in which the visual target is given by stereoscopic video clips. In this study, we verify short-term effects of the apparatus on eyesight of visual inspection workers (22 females) suffering from eye fatigue and 12 middle-aged persons. In the Measurement 1, the workers were trained in 3 days. Moreover, the middle-aged were investigated on several trials of the eyesight recovering apparatus in the Measurement 2. As a result, the visual acuity was statistically improved by continuous accommodation training which will promote a ciliary muscle-stretching effect.
Highlights
With the development of computers and widespread use of the internet, near visual tasks, such as Visual Display Terminal (VDT) activities have increased in young to elderly persons, causing social problems
In order to solve the above mentioned problems, we suggest that the accommodation training is accomplished by gazing at an image in 3D movies, which simulate the back-andforth motion in a stereoscopic space by using a computer and a Liquid Crystal Display (LCD)
We presented a movie using the POWER 3D method as the movie for the accommodation training, and a short-term effect of the accommodation training was investigated in visual inspection workers suffering from eye fatigue and middle-aged people
Summary
With the development of computers and widespread use of the internet, near visual tasks, such as Visual Display Terminal (VDT) activities have increased in young to elderly persons, causing social problems. Near visual tasks for a prolonged time strain the ciliary muscle, which may cause abnormalities in the accommodative function of the lens. This condition is called pseudomyopia, considered to be a part of refractive myopia. By improving the abnormal accommodative function, we can improve or prevent these vision problems In Japan, an apparatus called MD-SS was developed [2] This apparatus works by using a Landolt ring drawn on a flat plate that moves back and forth over a distance of 2 m in order to encourage alternately repeating negative and positive accommodation in the observers. In order to solve the above mentioned problems, we suggest that the accommodation training is accomplished by gazing at an image in 3D movies, which simulate the back-andforth motion in a stereoscopic space by using a computer and a Liquid Crystal Display (LCD)
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