Effects of interpupillary distance on stereoacuity: the Frisby Davis distance stereotest versus a 3-dimensional distance stereotest

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• 作者：Youngsub Eom ; Jong-Suk Song ; Soh-Eun Ahn ; Su-Yeon Kang…
• 关键词：Frisby Davis distance stereotest ; Interpupillary distance ; Stereoacuity ; 3 ; dimensional stereotest
• 刊名：Japanese Journal of Ophthalmology
• 出版年：2013
• 出版时间：September 2013
• 年：2013
• 卷：57
• 期：5
• 页码：486-492
• 全文大小：373KB
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• 作者单位：Youngsub Eom (1)
  Jong-Suk Song (1)
  Soh-Eun Ahn (1)
  Su-Yeon Kang (1)
  Young-Woo Suh (1)
  Jaeryung Oh (1)
  Seung-Hyun Kim (1)
  Hyo Myung Kim (1)
  
  1. Department of Ophthalmology, Guro Hospital, Korea University College of Medicine, 80 Guro-dong, Guro-gu, Seoul, 152-703, South Korea
  
• ISSN：1613-2246

文摘

Purpose To evaluate the effect of interpupillary distance (IPD) on stereoacuity using 2 kinds of stereoacuity tests in a normal population. Methods The distance stereoacuities of 33 healthy volunteers with no evidence of ocular diseases were measured with the Frisby Davis distance (FD2) stereotest and a 3-dimensional monitor-based distance stereotest (distance 3-D stereotest). These 2 kinds of stereotests were repeated using horizontal periscopes to increase the IPD 2- and 3-fold in order to investigate the effect of IPD increase on stereoacuity. Results The mean age of the participants was 28.5?years (range 20-1?years). The mean logarithms of the individual minimum angle of stereodiscrimination (logMAS) were 1.04?±?0.23 (range 0.70-.48 logMAS) with the FD2 stereotest and 1.52?±?0.19 (range 1.00-.85 logMAS) with the distance 3-D stereotest. As the IPD increased 2- and 3-fold, the logMAS measured with the FD2 stereotest improved from 1.04 to 0.98 and 0.91 (P?=?0.061 and P?=?0.003), respectively, and those measured with the distance 3-D stereotest worsened from 1.52 to 1.73 and 1.85 (P?<?0.001 and P?<?0.001), respectively. Conclusions Changes in IPD measured with the FD2 stereotest exhibited opposite effects to those measured with the distance 3-D stereotest. This reflects what is known to happen in the real world, i.e., that stereoacuity improves as IPD increases.