Effects of different measurement light configurations of table-mounted and handheld keratometers on corneal power

DOI
  • Tatara Shunya
    Department of Orthoptics and Visual sciences, Faculty of Medical Technology, Niigata University of Health and Welfare Department of Vision Science, Faculty of Sensory and Motor Control, Kitasato University Graduate School of Medical Science
  • Maeda Fumiatsu
    Department of Orthoptics and Visual sciences, Faculty of Medical Technology, Niigata University of Health and Welfare Field of Orthoptics and Visual Sciences, Major in Medical and Rehabilitation Sciences, Graduate School of Health and Welfare, Niigata University of Health and Welfare
  • Ubukata Hokuto
    Department of Orthoptics and Visual sciences, Faculty of Medical Technology, Niigata University of Health and Welfare
  • Shiga Yuko
    Department of Orthoptics and Visual sciences, Faculty of Medical Technology, Niigata University of Health and Welfare
  • Yaoeda Kiyoshi
    Field of Orthoptics and Visual Sciences, Major in Medical and Rehabilitation Sciences, Graduate School of Health and Welfare, Niigata University of Health and Welfare Department of Ophthalmology, Yaoeda Eye Clinic Division of Ophthalmology and Visual Sciences, Niigata University Graduate School of Medical and Dental Sciences
  • Handa Tomoya
    Department of Vision Science, Faculty of Sensory and Motor Control, Kitasato University Graduate School of Medical Science Department of Rehabilitation, Orthoptics and Visual Science Course, School of Allied Health Sciences, Kitasato University

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Other Title
  • 据え置き式および手持ち式ケラトメータの測定光配置の違いが角膜屈折力に与える影響

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<p> 【Purpose】We examined the differences in corneal power of table-mounted and handheld keratometers with different light configurations.</p><p> 【Methods】Corneal power was measured from the right eyes of 189 university students (aged 20.2±1.2 years) with no eye disease other than refractive error using four types of auto-keratometers and analyzed using power vector analysis.</p><p> 【Results】The mean corneal power was 43.37 for TONOREF II, 43.40 for ACOMOREF 2, 43.38 for Retinomax K+Screeen (RMS), and 43.49 [D] for Retinomax K-plus3 (RM3), with RM3 having a significantly higher value (p＜0.001). J0 was significantly positive for RM3 (p＜0.001), and J45 was significantly different in each group (p＝0.002 to ＜0.001), except between ACOMOREF2 and RM3.</p><p> 【Conclusion】Although there were significantly different in corneal power in keratometer models, these differences were not clinically relevant (＜0.25 D).</p>

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