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What are some terms I’ll hear about eyeglass lenses, and what do they mean?

ANSWER

When it comes to lenses, you might hear your eye doctor mention:

  • Monofocal lenses, which give one vision correction for all distances.
  • Multifocal (bifocal, trifocal, progressive, or no-line) lenses, which correct both near and distant vision.
  • Photochromatic lenses, which darken in situations where you'd otherwise wear sunglasses but act as regular eyeglasses in normal light.

From: Eyeglasses That Do the Job WebMD Medical Reference

SOURCES:

American Academy of Ophthalmology: "Correcting Your Vision With Glasses and Contacts," "When to See an Eye M.D.," "Introduction to Eyeglasses: Lens Design," "Introduction to Eyeglasses: Lens Enhancements," "Introduction to Eyeglasses: Frames," "Play Sports Safely -- Use Eye Protection," "Eye Injury Prevention."

American Optometric Association: "Criteria for Determining Whether the Need for Eyeglasses or Other Treatment Is Related to Computer Use," "Care of the Patient With Presbyopia," “Recommended Eye Examination Frequency for Pediatric Patients and Adults.”

AllAboutVision.com: "Specialty Eyewear: Glasses for All Seasons, for All Reasons."

The New York Times: "Need Reading Glasses? Welcome to Middle Age."

HealthyVision2010.org: "Eye Safety at Work Is Everyone's Business."

Reviewed by Alan Kozarsky on December 25, 2018

SOURCES:

American Academy of Ophthalmology: "Correcting Your Vision With Glasses and Contacts," "When to See an Eye M.D.," "Introduction to Eyeglasses: Lens Design," "Introduction to Eyeglasses: Lens Enhancements," "Introduction to Eyeglasses: Frames," "Play Sports Safely -- Use Eye Protection," "Eye Injury Prevention."

American Optometric Association: "Criteria for Determining Whether the Need for Eyeglasses or Other Treatment Is Related to Computer Use," "Care of the Patient With Presbyopia," “Recommended Eye Examination Frequency for Pediatric Patients and Adults.”

AllAboutVision.com: "Specialty Eyewear: Glasses for All Seasons, for All Reasons."

The New York Times: "Need Reading Glasses? Welcome to Middle Age."

HealthyVision2010.org: "Eye Safety at Work Is Everyone's Business."

Reviewed by Alan Kozarsky on December 25, 2018

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