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What are trifocal lenses?

ANSWER

Trifocals correct your vision so you can see close up, middle distance, or far away. They may also may have lines or come in a progressive lens.

SOURCES:

American Academy of Ophthalmology: “Blurry Vision with Progressive Bifocals,” “Presbyopia Treatment,” “What Is Presbyopia?”

Canadian Association of Optometrists: “Multifocals.”

Mayo Clinic: “Presbyopia.”

Nikil Patel, optometrist, Atlanta.

Scientific Reports : “Adaptation to Progressive Additive Lenses: Potential Factors to Consider.”

British Medical Journal : “Effect on falls of providing single lens distance vision glasses to multifocal glasses wearers: VISIBLE randomised controlled trial.”

Meniere’s Society: “Vision and Vertigo.”

Reviewed by Whitney Seltman on July 25, 2019

SOURCES:

American Academy of Ophthalmology: “Blurry Vision with Progressive Bifocals,” “Presbyopia Treatment,” “What Is Presbyopia?”

Canadian Association of Optometrists: “Multifocals.”

Mayo Clinic: “Presbyopia.”

Nikil Patel, optometrist, Atlanta.

Scientific Reports : “Adaptation to Progressive Additive Lenses: Potential Factors to Consider.”

British Medical Journal : “Effect on falls of providing single lens distance vision glasses to multifocal glasses wearers: VISIBLE randomised controlled trial.”

Meniere’s Society: “Vision and Vertigo.”

Reviewed by Whitney Seltman on July 25, 2019

NEXT QUESTION:

What are short-term side effects of using bifocals or progressives?

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