night-blind
Can't see dark
Night-blind describes the inability to see well in dim light or darkness.
The condition, called night blindness, results from vitamin A deficiency or certain eye disorders.
Someone who is night-blind can see normally in daylight but struggles after dusk: He's too night-blind to drive at night.
Inadequate retinol levels
- vision impairmentReduced ability to see
- ophthalmologyMedical specialty for eyes
- eye examinationAssessment of sight health
- optometryEye and lens healthcare
ophthalmologist · visual acuity · retina · rod cells · photoreceptors · diagnosis · treatment · corrective lenses
Light after sunset
- duskDimming after sundown
- gloomPervasive dimness or dejection
- shadowsDark areas from blocked light
- starlightLuminance from distant suns
scotopic · blackout · poorly lit · stumbling · disorientation · depth perception
Existing from birth
- hereditaryPassed through generations
- genetic mutationHeritable DNA sequence change
- carrierOne that transports
- genetic testingAnalysis for inherited disorders
genetic counseling · family history · early onset · progressive · degenerative
- road hazardsDangers on pavement
- pedestriansPeople traveling on foot
- cyclistsPeople who ride bicycles
- rural roadsCountryside thoroughfares
Light-returning safety garments
- high-visibility gearFluorescent safety clothing
- flashlightPortable electric lamp
- torchHandheld burning light source
- headlampForward-facing vehicle light
streetlights · glow sticks · route planning · adaptive strategies
vitamin A deficiency
Inadequate retinol levels
- vision impairmentReduced ability to see
- ophthalmologyMedical specialty for eyes
- eye examinationAssessment of sight health
optometry · ophthalmologist · visual acuity · retina · rod cells · photoreceptors · diagnosis · treatment · corrective lenses · supplements
twilight
Light after sunset
starlight · scotopic · blackout · poorly lit · stumbling · disorientation · depth perception
congenital
Existing from birth
- hereditaryPassed through generations
- genetic mutationHeritable DNA sequence change
- carrierOne that transports
genetic testing · genetic counseling · family history · early onset · progressive · degenerative
oncoming traffic
- road hazardsDangers on pavement
- pedestriansPeople traveling on foot
- cyclistsPeople who ride bicycles
rural roads · highway driving · road markings · restricted license
reflective clothing
Light-returning safety garments
- high-visibility gearFluorescent safety clothing
- flashlightPortable electric lamp
- torchHandheld burning light source
headlamp · streetlights · glow sticks · route planning · adaptive strategies
night-blindeagle-eyed
Exceptionally sharp of vision
sharp-eyed · clear-sighted · lynx-eyed · hawk-eyed · 20/20 vision
night, nights, nightly, nighttime, nightmare, nightfall, overnight, midnight, fortnight