Abstract
Electronic refractometers have been used to measure ametropia objectively in clinical practice for a decade. Focus detection is automated in many of them, but there has been developed a unique instrument which allows television monitored measurement. The Topcon Refractometer RM 200B shown in Fig. 1 is equipped with a TV monitor, on which the target patterns and the patient’s eye can be seen (Fig. 2). The target pattern consists of three pairs of bars (Fig. 3), two of which are used for the detection of focus in the two principal meridians respectively, and the other is used for the estimation of the axis of astigmatism. The usefulness of this particular design was investigated.
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References
S. Oshima, S. Hommura, Y. Usuki, K. Kono, S. Wada, and I. Kitao: Journal of Ophthalmological Optics of Japan 2, 2 (1981)
D. Malacara: Am. J. Optom. and Phys. Optics 51, 15 (1974)
S. Wada and I. Kato: Rinsho Ganka 30, 1441 (1976)
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© 1983 Springer-Verlag Berlin Heidelberg
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Oshima, S., Hommura, S., Nose, H., Wada, S., Kitao, I. (1983). A Semi-Automatic Refractometer with a TV Monitor Allowing One Position Measures of Ametropia. In: Breinin, G.M., Siegel, I.M. (eds) Advances in Diagnostic Visual Optics. Springer Series in Optical Sciences, vol 41. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-540-38823-4_6
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DOI: https://doi.org/10.1007/978-3-540-38823-4_6
Publisher Name: Springer, Berlin, Heidelberg
Print ISBN: 978-3-662-15927-9
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