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dioptre    
n. 屈光度

屈光度

dioptre
n 1: a unit of measurement of the refractive power of a lens
which is equal to the reciprocal of the focal length
measured in meters; used by oculists [synonym: {diopter},
{dioptre}]


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英文字典中文字典相关资料:


  • Dioptre - Wikipedia
    Most mirrorless cameras and DSLRs have a control providing dioptre adjustment of the image seen through the viewfinder The control is typically a small control wheel on the right or left side of the viewfinder
  • Diopter Calculator
    The diopter calculator efficiently determines the optical power of a lens in diopters using its focal length
  • Optical Diopter Strength Explained – Focusers
    Diopter strength refers to the optical power of a lens It's commonly applied to reader-strength eyeglasses, as well as telescopes other magnifying lenses Lenses with a focal length - defined as the distance between the center of a lens and its focal point - of 1 meter (about 39 inches) have a diopter strength of 1
  • Converting Vision Between Diopters and 20 xx - Inner Blindness
    Conversion Chart Diopters and Blur The Subjective Test The Visual Acuity Test Converting the Numbers Vision Changes Is the Prescription Right For You?
  • What does eye power -6 means and how close to blindness is it?
    I am going to assume with - 6 you mean a measurement of - 6 Dioptre If you are talking about the strength of the glasses he needs, the minus indicates that this eye is nearsighted, a positive value would indicate farsightedness
  • NCERT Q5 - A person needs a lens of power -5. 5 dioptres for . . .
    For correcting his near vision he needs a lens of power +1 5 dioptre What is the focal length of the lens required for correcting (i) distant vision, and (ii) near vision?
  • Dioptres – meaning and values - Hylo we care
    The dioptre value is measured in 0 25 increments Sometimes the results vary by up to a quarter of a dioptre, depending on the patient's daily form; that is why this scaling has proved successful so far





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