A basic vision therapy tool no vision therapy practice should be without. Improved Marsden Balls now have a better weight which offers a better swing.
The Marsden Balls are 3.25″ with printed black letters and numbers on a 10 foot cord.
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A basic vision therapy tool no vision therapy practice should be without. Improved Marsden Balls now have a better weight which offers a better swing.
A basic vision therapy tool no vision therapy practice should be without. Improved Marsden Balls now have a better weight which offers a better swing.
The Marsden Balls are 3.25″ with printed black letters and numbers on a 10 foot cord.
Brands | iAdvantec |
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The Combination Horizontal Vertical Prism Bar provides accurate measurement of ocular deviation. This new combination prism bar resolves the problem by having the horizontal prism bar slide up and down in a channel affixed to the vertical prism bar.
These alternating flippers are used to increase the speed and reduce the latency of the speed of the response for patients that have difficulty shifting focus. Alternating Accommodative Flipper (aka Rock Flipper) Vision Therapy can be conducted in and out or at home for focusing disorders. The primary focusing dysfunction this procedure treats is accommodative infacility (a problem shifting focus from near to far and back again).
These Alternating Flippers have a plus lens at the power specified on one side and an occluding lens on the other side. Flip the instrument over and you get the same power but minus and an occluding lens on the alternate side.
These vergence prisms quickly screen for binocular vision. Use these to get the patient to cycle between the two prisms up to 15 cycles per minute. Use at 16″ (40 cm) with a 20/30 near point line. Prisms are 12D base-out and 3D base-in and 1.5″ high (38mm).
The Vergence Facility Prism is available in :
Mounted to a stainless steel holder