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Yuko Shibata, Hiroshi Uozato; The Accommodative And Pupillary Response For Peripheral Stimulus. Invest. Ophthalmol. Vis. Sci. 2011;52(14):4910.
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To investigate the influence of peripheral retinal stimuli on visual function, we examined the accommodative response and pupillary response with a fixation object through a hole of 5 degree of arc on the test board at a different distance.
Twelve normal observers (age 21-33) participated in this study. The left eye was measured with a patch worn over the right eye. The refractive errors and size of pupil diameter were measured by the autorefkeratometer (WAM-5500, Grandseiko), looking at a target of Maltese cross of 1 degree of arc at the distance of 1m through a hole of 5 degree of arc on the test board of random dot pattern, whose dot’s square size was 0.25 degree of arc, at the distance of 33cm.
The group mean total accommodation looking at the target in an open field of view was 0.99±0.28D. Through a hole of test board of 33 cm distance, the group mean total accommodation looking at the target was 1.33±0.41 D, and through a hole of test board of 33 cm distance with looking at no target , the group mean total accommodation was 2.06±0.42 D. There was a significant value in ANOVA test and Scheffe test (p<0.05).There was no significant value with the size of pupil diameter, but some subjects had some swing of patterns in the size of pupil diameter looking at the fixation target through the test board’s hole.
Through a hole of the test board, the accommodation changed when looking at the target or no target. The stimuli to near peripheral retina had some influence on accommodative and pupillary response.
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