| 词汇 | diopter |
| 释义 | diopter noun[ C ] physics, medical USspecialized(UKdioptre)us/daɪˈɑːp.tɚ/uk /daɪˈɒp.tər/ a unit of measurement of the power of a lens, used for measuring a person's eyesight: More than minus six diopters counts as severely myopic. Miscellaneous units of measurement acre acreage caloric denier dioptre farad fathom firkin flashpoint joule kHz newton radian refractive index röntgen Scoville scale SI unit sievert sun protection factor watt You can also find related words, phrases, and synonyms in the topics: Medical examination Examples of diopterdiopter There's a diopter-adjustment lever on top of the eyepiece, and a proximity sensor turns it on as you hold it to your eye. From Wired Identification of the best lens between scorers was always within 0.5 diopters. Nonetheless, there was a clear tendency for the image to be sharper at 8.4 than at 0 diopters. The eyes were covered with contact lenses (0 diopter) and artificial pupils of 4-mm diameter were fixed close to the lenses. The resulting esotropia was moderate, ranging from 10 prism diopters to 25 prism diopters. We accept that this, in addition to the fact the measuring light is a 632.7-nm laser, may explain the 10– diopters of hyperopia. The resulting esotropia was moderate, ranging from 10 to 25 prism diopters. All subjects were in excellent ocular health and in excellent general health, and no subjects had myopia$ 5 diopters. All four of the lens-reared monkeys developed natural hyperopic anisometropia of greater than 2 diopters. The animal shown with squares was 5 diopters more hyperoptic (and the animal shown with circles was 10 diopters more hyperopic) than the animal shown with the triangles. The images on the left, labelled hyperopic, are for a converging incoming bundle of rays (18.4 diopters) and those on the right are for a diverging bundle (28.4 diopters). To find the refraction that produced the sharpest retinal images, we varied the vergence of the source over a range of 21 diopters (28.4 to 12.6 diopters). Round the lamp he placed a microscope, diopter, scales, plumb bobs, and a sounding rod, whose varnished brasses diffused a warm sunlight yellow. From Project Gutenberg These examples are from corpora and from sources on the web. Any opinions in the examples do not represent the opinion of the Cambridge Dictionary editors or of Cambridge University Press or its licensors. |
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