Diopter

/daɪˈɑːptər/
noun

A unit of measurement for the optical power of a lens, equal to the reciprocal of the focal length in meters.

The eye doctor said I need lenses with a strength of -2.5 diopters.
Visual representation of "diopter" - A unit of measurement for the optical power of a lens, equal to the reciprocal of the focal length in meters.

Often appears as...

  • high diopters
  • negative diopters

Usage tips

Neutral

optical power, corrective lenses, lens strength

noun

A unit of measurement for the optical power of a lens, equal to the reciprocal of the focal length in meters.

The eye doctor said I need lenses with a strength of -2.5 diopters.
Visual representation of "diopter" - A unit of measurement for the optical power of a lens, equal to the reciprocal of the focal length in meters.

Often appears as...

  • high diopters
  • negative diopters

Usage tips

Neutral

optical power, corrective lenses, lens strength

Definition 1 of 1
Visual representation of "diopter"
LampPro Tip 1/3

Measurement

Diopters measure the optical power of lenses; higher values indicate stronger lenses.

My new glasses have a prescription of -3 diopters.
LampPro Tip 2/3

Context

In medical contexts, diopter is crucial for visual correction; it's essential to understand your prescription.

I learned that my vision is corrected best with a diopter of -2.75.
LampPro Tip 3/3

Technical Use

Diopter is used primarily in optics; familiarity with this term is necessary for anyone purchasing corrective lenses.

I didn't understand diopters until I started wearing glasses.
LampPro Tip 1/3

Measurement

Diopters measure the optical power of lenses; higher values indicate stronger lenses.

My new glasses have a prescription of -3 diopters.
LampPro Tip 2/3

Context

In medical contexts, diopter is crucial for visual correction; it's essential to understand your prescription.

I learned that my vision is corrected best with a diopter of -2.75.
LampPro Tip 3/3

Technical Use

Diopter is used primarily in optics; familiarity with this term is necessary for anyone purchasing corrective lenses.

I didn't understand diopters until I started wearing glasses.
LampPro Tip 1/3

Measurement

Diopters measure the optical power of lenses; higher values indicate stronger lenses.

My new glasses have a prescription of -3 diopters.
LampPro Tip 2/3

Context

In medical contexts, diopter is crucial for visual correction; it's essential to understand your prescription.

I learned that my vision is corrected best with a diopter of -2.75.
LampPro Tip 3/3

Technical Use

Diopter is used primarily in optics; familiarity with this term is necessary for anyone purchasing corrective lenses.

I didn't understand diopters until I started wearing glasses.
Visual representation of the word "Diopter"

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