bifocal
Near-and-far spectacles
Bifocal describes lenses with two distinct optical powers—typically one for distance vision and one for close work like reading.
The term almost always refers to eyeglasses: She got her first pair of bifocals at fifty.
The design allows wearers to see clearly at different distances without switching glasses.
Usually appears in the plural: bifocals.
Corrective eyewear worn daily
- glassesCorrective eyewear or tumblers
- lensesCurved transparent refractors
- framesRigid enclosing structures
- prescriptionMedical dispensing authorization
progressive · varifocals · optician · optometry · eyeglasses · readers · lined · segment
Blurred near vision condition
- nearsightednessDefective distant vision
- presbyopiaAge-related near vision loss
- hyperopiaDifficulty seeing nearby objects
- myopiaBlurry distance vision
astigmatism · diopter · refraction · blurriness · sharpness · clarity · squinting · eye-strain
Age-related near vision loss
- seniorHigher in rank
- elderlyAdvanced in age
- age-relatedTied to chronological progression
- retirementLeaving the workforce permanently
over-the-counter · magnification · deterioration · weakening · inevitable · life-stage · mature · grandparent
Fitting to new conditions
- habituationDiminished reaction over time
- transitionChange from one state
- line-of-sightUnobstructed path for vision
- peripheralExternal computer add-on
distortion · disorientation · stairs · tripping · driving · switching · alternating
Printed periodical of current events
- booksBound written works
- menusLists of available dishes
- labelsIdentifying markers attached to items
- sewingCraft with needle and thread
crafts · needlework · crossword · smartphone · computer · documents · magnification
New device or method
- eighteenth-centuryRelating to the 1700s
- historicalOf documented times
- innovationCreating something original
- PhiladelphiaPennsylvania's largest metropolis
spectacles
Corrective eyewear worn daily
- glassesCorrective eyewear or tumblers
- lensesCurved transparent refractors
- framesRigid enclosing structures
prescription · progressive · varifocals · optician · optometry · eyeglasses · readers · lined · segment · bridge
farsightedness
Blurred near vision condition
- nearsightednessDefective distant vision
- presbyopiaAge-related near vision loss
- hyperopiaDifficulty seeing nearby objects
myopia · astigmatism · diopter · refraction · blurriness · sharpness · clarity · squinting · eye-strain · accommodation
presbyopia
Age-related near vision loss
- seniorHigher in rank
- elderlyAdvanced in age
- age-relatedTied to chronological progression
retirement · over-the-counter · magnification · deterioration · weakening · inevitable · life-stage · mature · grandparent · generational
adaptation
Fitting to new conditions
- habituationDiminished reaction over time
- transitionChange from one state
- line-of-sightUnobstructed path for vision
peripheral · distortion · disorientation · stairs · tripping · driving · switching · alternating
newspaper
Printed periodical of current events
sewing · crafts · needlework · crossword · smartphone · computer · documents · magnification
invention
New device or method
- eighteenth-centuryRelating to the 1700s
- historicalOf documented times
- innovationCreating something original
- eyeglass partslens, lenses, frames, nose pad, nose pads
- bi- wordsbiannual, biathlon, bicameral, bicentennial, bicycle
- eyeglass lensesprogressive, progressive lenses, progressives, single vision, trifocals
- eyewearglasses, sunglasses, eyeglasses, spectacles, shades
- lenseszoom lens, prime lens, progressive, single vision, camera lens
bifocalsingle-focus
Concentrated on one point
reading glasses · progressive · trifocal · varifocal · multifocal
- bifocal lensesEyewear with two focal zones