These five LEA SYMBOLS Cards can be used for presentation as single optotypes or arranged in a row as a line test. When the cards are next to each other, the space between the symbols is equal to the width of the symbols.
These five LEA SYMBOLS Cards can be used for presentation as single optotypes or arranged in a row as a line test. When the cards are next to each other, the space between the symbols is equal to the width of the symbols. To determine the visual acuity use the following formula:
VA=Viewing Distance Used(meters)/M-value
60M cards are approx. 8.6″ x 8.6″ (21.9 cm x 21.9 cm). 40M cards are approx. 6″ x 6″ (15.25 cm x 15.25 cm).
Stereo Fly Test
Luneau 22 Loose Prism Bar Set
Magnetic D15 Color Test - 730004
Diplopia Goggles
LANG FIXATION STICK
Translucent Occluder
RAF Ruler
3M Press-On Prism
Retinoscope
Recumbent Spectacles
Cardiff Contrast Sensitivity Test
Trial Frame Set - Pediatric
Hertel's Exophthalmometer
Implants
Gonio Meter
Amsler Viewer
Vectograph Viewers
Eye Model
Budget Eye Model
Synoptophore
Keratometer
Sheridan Gardiner Test
Cardiff Acuity Test 16
