{"title":"vision-testing-aids-tools","description":null,"products":[{"product_id":"bangerter-occlusion-foil","title":"Bangerter Occlusion Foil","description":"\u003cp\u003eMay be used as a preventative measure for amblyopia, suppression and abnormal retinal correspondence. Used therapeutically in the treatment of amblyopia, orthoptic treatment, diplopia, diplopia with monocular aphakia (with \u0026lt;0.1). May be used as a primary treatment or as alternative treatment in cases where patching therapy is no longer providing further benefits.\u003cbr\u003e\nFoils may be cut to fit most frame sizes and shapes and adhere to existing lenses with only water.\u003cbr\u003e\nSize is approx. 2.5\" x 2.5\"\u003c\/p\u003e","brand":"Precision Vision","offers":[{"title":"Total Occlusion (00)","offer_id":45921494991009,"sku":"11959","price":9.0,"currency_code":"USD","in_stock":true},{"title":"Light Perception (LP)","offer_id":45921495023777,"sku":"11958","price":9.0,"currency_code":"USD","in_stock":true},{"title":"~20\/20 (1.0)","offer_id":45921495056545,"sku":"11950","price":9.0,"currency_code":"USD","in_stock":true},{"title":"~20\/25 (0.8)","offer_id":45921495089313,"sku":"11951","price":9.0,"currency_code":"USD","in_stock":true},{"title":"~20\/30 (0.6)","offer_id":45921495122081,"sku":"11952","price":9.0,"currency_code":"USD","in_stock":true},{"title":"~20\/50 (0.4)","offer_id":45921495154849,"sku":"11953","price":9.0,"currency_code":"USD","in_stock":true},{"title":"~20\/70 (0.3)","offer_id":45921495187617,"sku":"11954","price":9.0,"currency_code":"USD","in_stock":true},{"title":"~20\/100 (0.2)","offer_id":45921495220385,"sku":"11955","price":9.0,"currency_code":"USD","in_stock":true},{"title":"~20\/200 (0.1)","offer_id":45921495253153,"sku":"11956","price":9.0,"currency_code":"USD","in_stock":true},{"title":"~20\/300 (\u003c0.1)","offer_id":45921495285921,"sku":"11957","price":9.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0718\/4321\/7569\/files\/11958.jpg?v=1776157182"},{"product_id":"prism-set","title":"Prism Set","description":"\u003cstrong\u003eUse only mild soap and water to clean prisms!\u003c\/strong\u003e  Alcohol will degrade the quality of the product over time.\n\u003cp\u003eThese acrylic ophthalmic prisms have been re-engineered to solve the problem of birefringence which can hinder their use in certain clinical applications. The exclusive manufacturing process greatly reduces optical strain, producing prisms that virtually eliminate clinical birefringent effects.  Our prisms are calibrated for use in the \u003cstrong\u003efrontal plane position.\u003c\/strong\u003e\u003c\/p\u003e","brand":"Precision Vision","offers":[{"title":"Large Horizontal Prism Bar","offer_id":45921509015713,"sku":"17638","price":160.0,"currency_code":"USD","in_stock":true},{"title":"Square Prism Set (16 piece)","offer_id":45921509048481,"sku":"17649","price":207.0,"currency_code":"USD","in_stock":true},{"title":"Square Prism Set (22 piece)","offer_id":45921509081249,"sku":"17650","price":278.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0718\/4321\/7569\/files\/670d16d6-17650.jpg?v=1776157227"},{"product_id":"colenbrander-ruler","title":"Colenbrander Ruler","description":"\u003cp style=\"font-weight: 400;\"\u003e\u003cstrong\u003eThe COLENBRANDER DIOPTER RULER\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp style=\"font-weight: 400;\"\u003eThe ruler shows inches and centimeters. Most important, however, is the center scale, which shows DIOPTERS. Recording the reading distance in \u003cstrong\u003ediopters \u003c\/strong\u003e(the reciprocal of the distance in meters) greatly simplifies calculations and comparisons. It replaces the use of a visual acuity fraction\u003c\/p\u003e\n\u003cp style=\"font-weight: 400;\"\u003e\u003cstrong\u003e\u003cem\u003e(V = m \/ M = distance in meters \/ letter size) \u003c\/em\u003e\u003c\/strong\u003ewith a multiplication \u003cstrong\u003e\u003cem\u003e(1\/V = M.x.D = letter size x \u003c\/em\u003e\u003c\/strong\u003e\u003cstrong\u003e\u003cem\u003edistance in diopters)\u003c\/em\u003e\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp style=\"font-weight: 400;\"\u003eMeasuring the reading distance in diopters provides a simple check on the power of the reading add.\u003c\/p\u003e\n\u003cp style=\"font-weight: 400;\"\u003eThe \u003cstrong\u003ediamonds \u003c\/strong\u003eon the ruler represent steps that are equivalent to the print sample steps. For each diamond that the print is brought closer, the patient should be able to read one print size smaller, provided that the reading add is adjusted accordingly.\u003c\/p\u003e\n\u003cp style=\"font-weight: 400;\"\u003eThe short end of the ruler provides an \u003cstrong\u003eM-unit scale \u003c\/strong\u003eto measure the size of unknown print samples.\u003c\/p\u003e","brand":"Colenbrander","offers":[{"title":"Default Title","offer_id":45921511014561,"sku":"Colenbrander Ruler","price":13.75,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0718\/4321\/7569\/files\/Colenbrander_Diopter_Ruler_Front.jpg?v=1776157235"},{"product_id":"pd-ruler","title":"PD Ruler","description":"\u003cp class=\"faq-answer font-size-20-1440\"\u003eEvery set of prescription lenses has an “optical center,” which is determined by pupillary distance (PD). Pupillary distance is used to determine where you look through the lens of your glasses and should be as accurate as possible.\u003c\/p\u003e","brand":"Precision Vision","offers":[{"title":"Default Title","offer_id":45921513832609,"sku":"PD RULERS","price":5.75,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0718\/4321\/7569\/files\/e05498ac-pd-ruler_pv.jpg?v=1776157240"},{"product_id":"near-point-rule","title":"Near Point Rule","description":"\u003cp\u003e\u003c!-- wp:paragraph --\u003e\u003c\/p\u003e\n\u003cp\u003eThe \u003cstrong\u003enear point\u003c\/strong\u003e is the point closest to the bridge of the nose where \u003cstrong\u003econvergence and binocular single vision can no longer be maintained as an object approaches\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp\u003e\u003c!-- \/wp:paragraph --\u003e\u003c\/p\u003e\n\u003cp\u003e\u003c!-- wp:paragraph --\u003e\u003c\/p\u003e\n\u003cp\u003eAlso known as Accommodation and R-50 Rule, the Near Point Rule \u003cstrong\u003emeasures 50 cm long\u003c\/strong\u003e, \u003cstrong\u003e10 mm square\u003c\/strong\u003e, it is engraved with \u003cstrong\u003eCentimeters\u003c\/strong\u003e, \u003cstrong\u003eInches\u003c\/strong\u003e, \u003cstrong\u003eDiopter\u003c\/strong\u003e Scales and \u003cstrong\u003eDuane Age\u003c\/strong\u003e (the mean of the near point of accommodation at different ages according to Duane) with sliding card holder.\u003c\/p\u003e\n\u003cp\u003e\u003c!-- \/wp:paragraph --\u003e\u003c\/p\u003e\n\u003cp\u003e\u003c!-- wp:paragraph --\u003e\u003c\/p\u003e\n\u003cp\u003eMade of \u003cstrong\u003egray\u003c\/strong\u003e opaque plastic with \u003cstrong\u003ewhite\u003c\/strong\u003e markings.\u003c\/p\u003e\n\u003cp\u003e\u003c!-- \/wp:paragraph --\u003e\u003c\/p\u003e","brand":"Precision Vision","offers":[{"title":"Default Title","offer_id":45921513799841,"sku":"15150","price":69.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0718\/4321\/7569\/files\/b51bcfc3-15150-near-point-rule.jpg?v=1776157239"},{"product_id":"real-depth-stereo-vision-test","title":"Real Depth Stereo Vision Test","description":"\u003cp\u003ePrecision Vision's \u003cstrong\u003eReal Depth Stereo Test\u003c\/strong\u003e\u003cspan class=\"sentence\"\u003e™\u003c\/span\u003e Featuring The Patti Pics\u003cspan class=\"sentence\"\u003e™\u003c\/span\u003e Star Optotype.\u003c\/p\u003e\n\u003cp\u003eThe Real Depth Stereo Test is manufactured by Precision Vision and is designed to function without the need for specialized glasses for simulated depth. This test uses physical depth to measure a patient's stereo acuity. Three (3) scratch-resistant plates (6mm, 3mm, and 1.5mm) are included. The Real Depth Stereo Test includes a display stand that holds the test plates and provides a uniform white background for testing. The display stand also allows the user to administer the test on a tabletop or be handheld when necessary. The display stand has a front slot that displays the test plates at a 1-inch distance from the high contrast shadow reduction background. The rear slots conveniently holds the other two (2) test plates when not in use\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e\u003ca href=\"https:\/\/storage.googleapis.com\/stateless-precision-vision\/2023\/11\/2778706f-3712-real-depth-stereo-test-instructions.pdf\" target=\"_blank\" rel=\"noopener\"\u003eTest Instructions\u003c\/a\u003e\u003c\/strong\u003e\u003c\/p\u003e","brand":"Precision Vision","offers":[{"title":"Default Title","offer_id":45921513930913,"sku":"3712","price":226.75,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0718\/4321\/7569\/files\/77167efe-3712_front.png?v=1776157244"}],"url":"https:\/\/precision-vision.com\/collections\/vision-testing-aids-tools.oembed","provider":"Precision Vision","version":"1.0","type":"link"}