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| Author | Subject: keratometers |
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 ams
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keratometers
Jul 06, 2005 22:39:54 anyone know the major differences between the two principles of keratometers - ie fixed doubing and variable (think thats right!!) |
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Graeme S
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RE: keratometers
Jul 07, 2005 20:33:31 One position keratomter (B & L type)has variable doubling.Two position instrument (Javal Shiotz) has fixed doubling. |
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ams
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RE: keratometers
Jul 07, 2005 21:34:05 what does variable doubling mean? |