Related terms:
snellen chart
refractive error
eye chart
corrective lenses
monocular
eyeglass
acuity
visual acuity
eyeglass prescription
arc seconds
vernier acuity
see detail
human visual system
spherical lens
visual axis
letter size
display size
tactile feature
long cane
legally blind
ophthalmologist
minutes of arc
human vision
art of seeing
field loss
viewing experience
blocky
viewing distance
amsel
Wikipedia sources:
Snellen chart
Crambidae
Visual acuity
Eyeglass prescription
Optimum HDTV viewing distance
Bates method
Blindness
Context for words:
snellen
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