نتایج جستجو برای: asthenopia

تعداد نتایج: 393  

Journal: :Investigative ophthalmology & visual science 1983
S M Ebenholtz

After an 8-min fixation period, the dark focus of accommodation of 12 emmetropes either increased by -0.34 diopters (D) or relaxed by 0.21D depending upon whether the fixation target was at the near point or far point, respectively. No significant shifts occurred after fixation at the distance of the subject's dark focus. The obtained shifts had long time-constants as measured after 16 min in d...

Journal: :Industrial health 1986
M Tanahashi M Miyao H Sakakibara T Kondo Y Akamatsu K Takihi T Yamauchi K Yamanaka S Yamada S Tomiyasu

Fluctuations in accommodation, accommodative function, visual acuity and subjective symptom were investigated on the basis of two hours of character search work by VDT operators. As a means to determine the visual load encountered in VDT work, the fluctuations in accommodation were analyzed using the computer method developed by the authors in eight young women. Visual acuity and amplitude of a...

Journal: :The British journal of ophthalmology 1970
G C Sood D K Sen

Lesions involving the vertical muscles or their nerve supply usually result in some degree of torsional deviation of the eye which may produce intractable and distressing asthenopia. Although cyclophoria has long been recognized and has been demonstrated with such apparatus as the Maddox rod, Maddox wing, Maddox double prism, and synoptophore, it is nevertheless frequently overlooked. Moreover ...

Journal: :Evidence-Based Complementary and Alternative Medicine 2015

Journal: :The Journal of the Institute of Image Information and Television Engineers 2005

Journal: :International Journal of Tropical Medicine 2010

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