bifocals
Two-zone lenses
Bifocals are eyeglasses with lenses divided into two sections—typically the upper part for distance vision and the lower part for reading.
The design lets wearers see clearly at different distances without switching glasses: She peered over her bifocals at the fine print.
The term can suggest middle age, when close-up vision typically begins to weaken.
Corrective eyewear or tumblers
- lensesCurved transparent refractors
- framesRigid enclosing structures
- eyeglassesCorrective lenses worn
- progressiveFavoring reform and innovation
varifocals · trifocals · readers · corrective · prescription · segmented · lined · optical
Age-related near vision loss
- farsightednessBlurred near vision condition
- nearsightednessDefective distant vision
- correctionFixing of mistakes
- sightVisual perception faculty
distance · near · clarity · diopter · hyperopia · acuity · accommodation · blurriness
Advanced in age
- seniorHigher in rank
- grandparentsAncestors once removed
- silver-hairedHaving gray-white hair
- retirementLeaving the workforce permanently
pensioner · magnification · presbyopic · mature · age-related
Divided into sections
- versatileCapable in varied contexts
- convenientEasy to use
- switchableAble to be exchanged
- seamlessWithout visible joins
Surname or locality
- patentObvious; inventor's monopoly
- innovationCreating something original
- eighteenth-centuryRelating to the 1700s
- inventorCreator of original devices
breakthrough · design · improvement · Philadelphia · polymath
glasses
Corrective eyewear or tumblers
- lensesCurved transparent refractors
- framesRigid enclosing structures
- eyeglassesCorrective lenses worn
progressive · varifocals · trifocals · readers · corrective · prescription · segmented · lined · optical · rimless
presbyopia
Age-related near vision loss
- farsightednessBlurred near vision condition
- nearsightednessDefective distant vision
- correctionFixing of mistakes
sight · distance · near · clarity · diopter · hyperopia · acuity · accommodation · blurriness · refraction
elderly
Advanced in age
- seniorHigher in rank
- grandparentsAncestors once removed
- silver-hairedHaving gray-white hair
retirement · pensioner · magnification · presbyopic · mature · age-related
segmented
Divided into sections
- versatileCapable in varied contexts
- convenientEasy to use
- switchableAble to be exchanged
Franklin
Surname or locality
- patentObvious; inventor's monopoly
- innovationCreating something original
- eighteenth-centuryRelating to the 1700s
inventor · breakthrough · design · improvement · Philadelphia · polymath
- eyewearglasses, sunglasses, eyeglasses, shades, prescription glasses
- optometryeye exams, eye care, eye doctor, glasses, contact lenses
- eyeglass lensesprogressive, progressive lenses, progressives, single vision, trifocals
- vision aidswhite cane, guide dog, magnifying glass, screen reader, braille display
- farsightednesshyperopia, presbyopia, longsightedness, foresight, forethought
- multifocalstrifocals, progressives, progressive lenses, varifocals, flat-top
bifocalsLASIK
Corneal vision correction
laser eye surgery · PRK · contact lenses · corrective surgery · 20/20 vision
- bifocal lensesEyewear with two focal zones