DIOPTRE Definition & Meaning

dioptre

/ �岹ɪˈɒ��ə /

noun

a unit for measuring the refractive power of a lens: the reciprocal of the focal length of the lens expressed in metres

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Derived Forms

�徱ˈ�Ǳ�ٰ��, adjective

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�y��vlog History and Origins

Origin of dioptre¹

C16: from Latin dioptra optical instrument, from Greek, from dia- through + opsesthai to see

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Example Sentences

Examples have not been reviewed.

But on average, the difference between dropping out at 16 and staying on until the end of university is "minus one dioptre".

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Enough, we must not over-rate the value of the objective determination of the error of refraction, and I would estimate the limit of error at half a dioptre at least.

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Opticians measure the ability of your eye to focus light in dioptres.

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Minus one dioptre is relatively mild, but it's enough to need glasses for driving.

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Isler found in hypermetropia of 2 to 10 dioptres squinting in 75 per cent.; in my statistics H. 1·5 D. to the highest degrees of hypermetropia are likewise represented by 75 per cent.

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