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Howell Phoria Nearpoint Card


By Edwin Howell, Bsc. Optom., Ph.D.
These cards are a direct reading phoria measurement technique utilizing vertical prism dissociation. The small nearpoint card is calibrated for measurements at 33 cm. The concept is simple and can be used for children as young as 4. Moment-by-moment changes in the phoria can be monitored and the cards can be used with a trial frame or phoropter. The cards are specially designed for accurate accommodation stimulation and monitoring. There is also an X-Cyl target and a variety of letter and word targets useful for near acuity, accommodation amplitude and facility, near retinoscopy and vergence challenge testing. Note: picture shown with the distance card (not included)

3 in stock (can be backordered)


Additional information

Weight1 lbs
Dimensions12 × 10 × .01 in
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