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Dioptre

Dioptre Di*op"tre, n. [F. See 2d Dioptric.] (Optics) A unit employed by oculists in numbering glasses according to the metric system; a refractive power equal to that of a glass whose principal focal distance is one meter.

Dioptre Di*op"tre, n. [F. See 2d Dioptric.] (Optics) A unit employed by oculists in numbering glasses according to the metric system; a refractive power equal to that of a glass whose principal focal distance is one meter.

- A dioptre (British spelling) or diopter (American spelling) is a unit of measurement of the optical power of a lens or curved mirror, which is equal to...

- The Four Prism Dioptre Reflex Test (also known as the 4 PRT, or 4 Prism Dioptre Base-out Test), is an objective, non-dissociative test used to prove the...

- for a constant head tilt or turn. Prism correction is measured in prism dioptres. A prescription that specifies prism correction will also specify the "base"...

- the form of the elastic lens using the ciliary body (in humans up to 15 dioptres in the mean). Fish and amphibians vary the power by changing the distance...

- optical power is the inverse metre (m−1), which is commonly called the dioptre. Converging lenses have positive optical power, while diverging lenses...

- this condition is MP0 = (0.25 m)Φ + 1, where Φ is the optical power in dioptres, and the factor of 0.25 m represents the ****umed near point (¼ m from the...

- reciprocal centimetre or inverse centimetre (symbol: cm−1), and, in optics, the dioptre. Quantities measured in reciprocal length include: absorption coefficient...

- fixation, visual acuity and cooperation For accurate (within two prism dioptres) numerical recording that will provide a point of reference for ****ure...

- A dioptra (sometimes also named dioptre or diopter, from Gr****: διόπτρα) is a classical astronomical and surveying instrument, dating from the 3rd century...

- power. In humans, the refractive power of the cornea is approximately 43 dioptres. The cornea can be reshaped by surgical procedures such as LASIK. While...

- The Four Prism Dioptre Reflex Test (also known as the 4 PRT, or 4 Prism Dioptre Base-out Test), is an objective, non-dissociative test used to prove the...

- for a constant head tilt or turn. Prism correction is measured in prism dioptres. A prescription that specifies prism correction will also specify the "base"...

- the form of the elastic lens using the ciliary body (in humans up to 15 dioptres in the mean). Fish and amphibians vary the power by changing the distance...

- optical power is the inverse metre (m−1), which is commonly called the dioptre. Converging lenses have positive optical power, while diverging lenses...

- this condition is MP0 = (0.25 m)Φ + 1, where Φ is the optical power in dioptres, and the factor of 0.25 m represents the ****umed near point (¼ m from the...

- reciprocal centimetre or inverse centimetre (symbol: cm−1), and, in optics, the dioptre. Quantities measured in reciprocal length include: absorption coefficient...

- fixation, visual acuity and cooperation For accurate (within two prism dioptres) numerical recording that will provide a point of reference for ****ure...

- A dioptra (sometimes also named dioptre or diopter, from Gr****: διόπτρα) is a classical astronomical and surveying instrument, dating from the 3rd century...

- power. In humans, the refractive power of the cornea is approximately 43 dioptres. The cornea can be reshaped by surgical procedures such as LASIK. While...

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