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diopter    
n. 屈光度

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  • Dioptre - Wikipedia
    A dioptre (British spelling) or diopter (American spelling), symbol dpt or D, is a unit of measurement with dimension of reciprocal length, equivalent to one reciprocal metre, 1 dpt = 1 m−1
  • What Is A Diopter? - All About Vision
    A diopter is a unit that is used to calculate the focusing strength of a pair of glasses or contact lenses It is the unit used for an optical prescription
  • Understanding Diopters: A Guide to Optical Measurement and . . . - eyeweb
    The basic unit of measurement in optometry, diopters, is used to express the optical power of prescription lenses They are made expressly to gauge the way a lens bends or refracts light to properly focus it onto the retina
  • What Is a Diopter and How Does It Measure Vision?
    The diopter is the standard unit of measurement used to quantify the optical power of a lens or curved mirror, which measures its ability to bend or refract light rays
  • What Is a Diopter? - Warby Parker
    A diopter is a unit of measurement for a lens’s focusing power Learn more about what a diopter measures and how diopters vary by prescription
  • Optical Diopter Strength Explained – Focusers
    Diopter strength refers to the optical power of a lens It's commonly applied to reader-strength eyeglasses or bifocals, as well as telescopes other magnifying lenses
  • Demystifying Diopters: An Insight into Vision Correction
    But what exactly is a diopter? Let’s break it down in a straightforward and accessible manner A diopter, in simple terms, is the unit used to measure the optical power of a lens It’s crucial in determining the degree of correction your vision needs
  • Diopter | Magnification, Refraction, Aberration | Britannica
    diopter, in optics, unit of magnifying power of a lens or lens system Because the power of a lens is proportional to unity (one) divided by the focal length (see lens), the power of a lens in diopters is numerically equal to 1 m divided by the focal length in metres
  • What is a Diopter? | Visionworks
    A diopter is a critical unit of measurement in optics that quantifies the refractive power of lenses used in eyeglasses and contact lenses It indicates the degree to which a lens must bend light to properly focus it onto the retina, correcting visual impairments
  • Diopters: The unit of measurement for the refractive power of the eye . . .
    Diopters (abbreviated as dpt) are the unit of measurement used to describe the refractive power of optical lenses In the context of the eye and defective vision, diopters indicate how strongly a spectacle lens or contact lens must refract light in order to correct vision





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