2012 Volume 33 Issue 3 Pages 115-119
Purpose: To examine the effect of accommodation-inducing monitors on asthenopia during visual display terminal (VDT) work.
Methods: The objective refraction value and accommodative high frequency component (HFC) of accommodative microfluctuations were measured both before and after 2 hours of VDT work with an accommodation-inducing monitor and a laptop, respectively. Measurements were made on the right eye. The subjects comprised 6 normal healthy volunteers (5 males, 1 female; mean age±standard deviation: 29.5±7.6 years) with no ophthalmological diseases.
Results: VDT work with the laptop resulted in significantly increased myopia; HFC also showed a significant rise. There was no significant difference in objective refraction value and HFC when subjects used the accommodation-inducing monitor, although the results showed slightly increased hyperopia and decreased HFC.
Conclusions: The accommodation-inducing monitor inhibited persistent contractions of the ciliary muscle during VDT work. The results suggest that use of the accommodation-inducing monitor can therefore provide protective efficacy for asthenopia during VDT work.
