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Akriti

Vergence Prism With Stainless Steel Stick

SKU: AOPLOP3.12BD
(0)
$45.18 USD
In stock
Usually ships within 24 hours

Product details

  • Vendor Akriti
  • SKU AOPLOP3.12BD

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Vergence Facility Prism is used for a quick test of binocular vision capability.

Vergence Prism test is used to assess the ability of the fusional vergence system to respond rapidly and accurately to changing vergence demands over time. This is measured in number of cycles per minute (cpm) that a stimulus can be fused through, alternating base-in (BI) and base-out (BO) prisms. 
 
Vergence facility response can be  tested over a 1 or 2 minute period at 40 cm using a single flip prism, 3 delta BI/12 delta BO, which has been found to differentiate optimally between groups at distance and near. 
 
This prism change is repeated for one minute and the clinician records the number of cycles performed during testing. Presence of suppression is indicated by a perceived lateral movement of a single target moving left or right of center, or no observed eye movement.
 
Most normal patients can cycle between these prism at the rate of 15/cpm. Those with difficulty should be more thoroughly tested. Repeatability of test results (with the 3 delta BI/12 delta BO prism) can be poor at distance and good at near.
 
Vergence Facility Prism combines 12D BO and 3D BI and  is 1 1/2 inch high (38mm). Available loose or mounted on stainless stick.

Please read before purchase. The information provided regarding dietary supplements or ointments are not to be taken as medical advice.

Consult a healthcare professional prior to use if you are pregnant, nursing, taking medication, or have a medical condition.

Keep out of reach of children. Store in a cool, dry place. Do not use if seal under cap is broken or missing.

Order by 2PM to get delivered next working day! We use 24 hours service with carriers in most cases so that you can get your order delivered on time.

There is €4.99 charge for delivery under €50 Orders. Additional charges will be imposed by our couriers for delivery to remote area, a surcharge may be levied to cover carriage to these areas.

Please note: Exposure to heat or sunlight may lead to melting/damage of product. Hence customers are expected to be available during the product delivery.