{"id":1891,"date":"2026-10-20T08:51:35","date_gmt":"2026-10-20T08:51:35","guid":{"rendered":"https:\/\/laseristanbulclinic.com\/eye-tools\/stereo-vision-test\/"},"modified":"2026-10-20T12:57:58","modified_gmt":"2026-10-20T12:57:58","slug":"stereo-vision-test","status":"publish","type":"page","link":"https:\/\/laseristanbulclinic.com\/en\/eye-tools\/stereo-vision-test\/","title":{"rendered":"Stereo vision test"},"content":{"rendered":"<!-- Hero (Photo + summary card) Start -->\n<section class=\"page-hero\" id=\"top\">\n\t<div class=\"phero-inner pad with-media container-fluid\"><div class=\"row\">\n\t\t<div class=\"phero-left col-12 col-lg-7\">\n\t\t\t<div data-hero-in><ol class=\"crumbs\" aria-label=\"Breadcrumb\"><li><a href=\"https:\/\/laseristanbulclinic.com\/en\/\">Home: eye surgery in Istanbul<\/a><\/li><li><a href=\"https:\/\/laseristanbulclinic.com\/en\/eye-tools\/\">Free eye tools<\/a><\/li><li><span aria-current=\"page\">Stereo vision test<\/span><\/li><\/ol><\/div>\t\t\t<h1 class=\"t64 hero-title phero-title\" data-lines>Stereo Vision Test: Check Your 3D Depth Perception Online<\/h1>\n\t\t\t\t\t\t<p class=\"t22 phero-lead\" data-hero-in><strong>You will need:<\/strong> red-cyan (anaglyph) paper glasses, a screen at full brightness and about 60 cm of distance. Wear your normal glasses or contact lenses. Ordinary 3D cinema glasses will not work.<\/p>\n\t\t\t\t\t\t<div class=\"phero-ctas\" data-hero-in><a class=\"pill pill-white\" href=\"#tool\"><span class=\"pill-dot\" aria-hidden=\"true\"><\/span><span class=\"pill-label\">Start the stereo vision test<\/span><\/a><\/div><ul class=\"phero-meta\" data-hero-in><li><svg width=\"16\" height=\"16\" aria-hidden=\"true\"><use href=\"#i-check\"\/><\/svg>Medically reviewed by <span class=\"ph\">{{surgeon name}}<\/span> \u00b7 <span class=\"ph\">{{date}}<\/span><\/li><\/ul>\t\t<\/div>\n\t\t<div class=\"phero-right has-media col-12 col-lg-5\">\n\t\t\t\t\t\t<figure class=\"phero-media\" data-hero-in><img decoding=\"async\" width=\"603\" height=\"675\" src=\"https:\/\/laseristanbulclinic.com\/wp-content\/uploads\/2026\/10\/slit-lamp-eye-examination.webp\" class=\"attachment-large size-large\" alt=\"Eye examination at a slit lamp\" fetchpriority=\"high\" srcset=\"https:\/\/laseristanbulclinic.com\/wp-content\/uploads\/2026\/10\/slit-lamp-eye-examination.webp 603w, https:\/\/laseristanbulclinic.com\/wp-content\/uploads\/2026\/10\/slit-lamp-eye-examination-268x300.webp 268w\" sizes=\"(max-width: 603px) 100vw, 603px\" \/><\/figure>\n\t\t\t\t\t\t\t\t\t<div class=\"inshort\" data-hero-in><p>This free stereo vision test checks whether your two eyes work together to give you 3D depth (stereopsis). You view hidden shapes made of random dots through red-cyan glasses and pick the shape you see, from easy to hard. It takes about three minutes and gives an approximate level, not a diagnosis. Prof. Dr. Ahmet Sat\u0131c\u0131 treats squint, one common cause of reduced stereopsis.<\/p><\/div>\n\t\t\t\t\t<\/div>\n\t<\/div><\/div>\n<\/section>\n<!-- Hero (Photo + summary card) End -->\n\n\n<!-- Eye Tool (Stereo (depth) vision test) Start -->\n<section class=\"panel dark tool-panel\" id=\"tool\"><div class=\"container-fluid px-0\"><div class=\"row g-0\"><div class=\"col-12\"><div class=\"tool-mount\" data-tool=\"stereo\" data-lang=\"en\" data-consult=\"https:\/\/laseristanbulclinic.com\/en\/free-consultation\/\" data-eyetest=\"https:\/\/laseristanbulclinic.com\/en\/online-eye-test\/\" data-laser=\"https:\/\/laseristanbulclinic.com\/en\/laser-eye-surgery-turkey\/\" data-learn=\"https:\/\/laseristanbulclinic.com\/en\/strabismus-surgery-turkey\/\" data-howto=\"#what-your-stereo-vision-test-result-means\"><\/div><noscript><p class=\"t22\">This tool needs JavaScript. Please enable it, or ask a surgeon directly.<\/p><\/noscript><\/div><\/div><\/div><\/section>\n<section class=\"psec pad tight\"><div class=\"container-fluid px-0\"><div class=\"row g-0\"><div class=\"col-12\"><div class=\"tool-after prose\"><p data-reveal><strong>You will need:<\/strong> red-cyan (anaglyph) paper glasses, a screen at full brightness and about 60 cm of distance. Wear your normal glasses or contact lenses. Ordinary 3D cinema glasses will not work.<\/p><\/div><\/div><\/div><\/div><\/section><!-- Eye Tool (Stereo (depth) vision test) End -->\n\n\n<!-- FAQ (Question and answer rows) Start -->\n<section class=\"psec pad\" id=\"what-your-stereo-vision-test-result-means\"><div class=\"container-fluid px-0\"><div class=\"row g-0\"><div class=\"col-12\">\n\t\t<h2 class=\"t48 sec-title\" data-reveal>What your stereo vision test result means<\/h2>\n\t\t\t\t\t<div class=\"qa-list\">\n\t\t\t\t<div class=\"qa-row\" data-reveal><div class=\"row\"><h3 class=\"qa-q col-12 col-lg-4\">What is stereopsis, and how does it work?<\/h3><div class=\"qa-a prose col-12 col-lg-8\"><p data-reveal><strong>Stereopsis is the brain&#8217;s ability to see in three dimensions and judge how far away things are, using the small difference between the pictures from your two eyes.<\/strong> The American Academy of Ophthalmology&#8217;s EyeWiki calls it the highest grade of binocular vision and says it develops in infants at 3 to 6 months of age. Your eyes sit a few centimetres apart, so each sees a slightly different view.<\/p><\/div><\/div><\/div>\n\t\t\t\t<div class=\"qa-row\" data-reveal><div class=\"row\"><h3 class=\"qa-q col-12 col-lg-4\">Stereopsis test chart: what the levels mean<\/h3><div class=\"qa-a prose col-12 col-lg-8\"><p data-reveal>Clinics measure stereopsis as <strong>stereoacuity<\/strong>, in seconds of arc (\u2033): the smallest depth difference you can detect. A lower number is sharper. This table shows how to read your online stereopsis test results.<\/p><div class=\"tbl-wrap\" data-reveal><table class=\"tbl rsp\"><thead><tr><th scope=\"col\">Your level<\/th><th scope=\"col\">Meaning<\/th><\/tr><\/thead><tbody><tr><th scope=\"row\">100\u2033 or finer<\/th><td data-label=\"Meaning\">Good stereopsis on this test<\/td><\/tr><tr><th scope=\"row\">140\u2013200\u2033<\/th><td data-label=\"Meaning\">Reduced; worth repeating and checking<\/td><\/tr><tr><th scope=\"row\">400\u2013800\u2033<\/th><td data-label=\"Meaning\">Much reduced; book an eye examination<\/td><\/tr><tr><th scope=\"row\">No shape seen<\/th><td data-label=\"Meaning\">No stereopsis seen on this test<\/td><\/tr><\/tbody><\/table><\/div><\/div><\/div><\/div>\n\t\t\t\t<div class=\"qa-row\" data-reveal><div class=\"row\"><h3 class=\"qa-q col-12 col-lg-4\">Stereopsis test normal range<\/h3><div class=\"qa-a prose col-12 col-lg-8\"><p data-reveal>There is no single normal figure, because each test has its own limit. In a 2016 study of 206 young adults (average age 22) in <em>Strabismus<\/em>, the upper limit of normal was 120\u2033 on the TNO test, 70\u2033 on the Preschool Randot, 40\u2033 on the Frisby and 160\u2033 on the Distance Randot. Adults with normal stereopsis on the Preschool Randot averaged about 30 to 40\u2033. A screen cannot match this accuracy, so treat your online level as a rough guide.<\/p><\/div><\/div><\/div>\n\t\t\t\t<div class=\"qa-row\" data-reveal><div class=\"row\"><h3 class=\"qa-q col-12 col-lg-4\">Stereopsis example: where you use it<\/h3><div class=\"qa-a prose col-12 col-lg-8\"><p data-reveal>Threading a needle, pouring a drink, catching a ball and judging a step all use stereopsis. You do not need it to function: one-eye cues such as perspective, relative size, shading and movement also give depth.<\/p><\/div><\/div><\/div>\n\t\t\t\t<div class=\"qa-row\" data-reveal><div class=\"row\"><h3 class=\"qa-q col-12 col-lg-4\">Stereopsis test fail: why did I not see the shapes?<\/h3><div class=\"qa-a prose col-12 col-lg-8\"><p data-reveal>First rule out the simple causes: glasses back to front, the wrong distance, a dim screen or your usual glasses left off. If you still fail, EyeWiki lists strabismus (squint), amblyopia (lazy eye), a big difference in prescription between the eyes and congenital cataract as conditions that reduce stereopsis. A 2019 review in <em>Ophthalmic and Physiological Optics<\/em> estimates that about 7% of adults under 60 have no measurable stereopsis (&#8220;stereoblindness&#8221;). Many never notice, so a failed stereopsis test is a reason to get checked, not to panic.<\/p><\/div><\/div><\/div>\n\t\t\t\t<div class=\"qa-row\" data-reveal><div class=\"row\"><h3 class=\"qa-q col-12 col-lg-4\">Stereopsis treatment: can it be improved?<\/h3><div class=\"qa-a prose col-12 col-lg-8\"><p data-reveal>Sometimes. For a squint, the NHS lists glasses, eye exercises, injections and surgery to realign the eyes. In a 2025 study of 132 adults in the <em>Canadian Journal of Ophthalmology<\/em>, 48% had stereoacuity better than 100\u2033 after strabismus surgery and 21.5% still had none; results were poorest for childhood-onset squint. For lazy eye, the NHS says treatment ideally starts before age 7. In adults, dichoptic (game-based) training has shown mixed results, according to the AAO. No website or app should promise to restore 3D vision.<\/p><\/div><\/div><\/div>\n\t\t\t<\/div>\n\t<\/div><\/div><\/div><\/section>\n<!-- FAQ (Question and answer rows) End -->\n\n\n<!-- Image + Text (Image left, text right) Start -->\n<section class=\"psec pad split-sec\" id=\"when-to-see-an-eye-doctor\"><div class=\"container-fluid px-0\"><div class=\"row g-0\"><div class=\"col-12\"><div class=\"split\"><div class=\"row\">\n\t\t<div class=\"split-media col-12 col-lg-6\" data-reveal><div class=\"media\" data-parallax><img loading=\"lazy\" decoding=\"async\" width=\"640\" height=\"800\" src=\"https:\/\/laseristanbulclinic.com\/wp-content\/uploads\/2026\/10\/corneal-topography-map-819x1024.webp\" class=\"attachment-large size-large\" alt=\"Corneal topography map\" sizes=\"auto, (max-width: 991px) 100vw, 50vw\" srcset=\"https:\/\/laseristanbulclinic.com\/wp-content\/uploads\/2026\/10\/corneal-topography-map-819x1024.webp 819w, https:\/\/laseristanbulclinic.com\/wp-content\/uploads\/2026\/10\/corneal-topography-map-240x300.webp 240w, https:\/\/laseristanbulclinic.com\/wp-content\/uploads\/2026\/10\/corneal-topography-map-768x960.webp 768w, https:\/\/laseristanbulclinic.com\/wp-content\/uploads\/2026\/10\/corneal-topography-map.webp 1200w\" \/><\/div><\/div>\n\t\t<div class=\"split-copy col-12 col-lg-6\">\n\t\t\t\t\t\t<h2 class=\"t48\" data-reveal>When to see an eye doctor<\/h2>\n\t\t\t\t\t\t<p class=\"t22 lede\" data-reveal><strong>Get urgent help today, whatever your result,<\/strong> if you have sudden double vision, sudden loss of vision, a dark curtain across your sight or double vision after a head injury. The NHS says double vision with a severe headache or an enlarged pupil is a 999 emergency. Call your local emergency number (112 in the EU and T\u00fcrkiye, 999 in the UK, 911 in the US and Canada).<\/p>\n\t\t\t\t\t\t<div class=\"prose\" data-reveal><p data-reveal><strong>Book an eye examination<\/strong> if your result is band B, C or D, if you have a squint or lazy eye, if your child&#8217;s eyes turn, or if you get aching, tired eyes or double vision when reading. A squint that starts in adulthood should always be looked at.<\/p><\/div>\n\t\t\t\t\t\t\t\t\t\t\t<\/div>\n<\/div><\/div><\/div><\/div><\/div><\/section>\n<!-- Image + Text (Image left, text right) End -->\n\n\n<!-- Note (Callout) Start -->\n<section class=\"psec pad tight\" id=\"disclaimer\"><div class=\"container-fluid px-0\"><div class=\"row g-0\"><div class=\"col-12\">\n\t\t\t<div class=\"callout line\" data-reveal><p data-reveal>This stereo vision test is a screening tool only. It does not diagnose any eye condition, cannot measure stereoacuity the way a clinic test does and does not replace an eye examination by an optometrist, orthoptist or ophthalmologist. Your result depends on your screen, glasses, lighting and distance. If you are worried about your eyes, or your vision changes suddenly, see an eye doctor.<\/p><\/div>\n\t<\/div><\/div><\/div><\/section>\n<!-- Note (Callout) End -->\n\n\n<!-- Call to Action (Panel) Start -->\n<section class=\"panel grad cta-panel\" id=\"is-a-squint-behind-your-result\"><div class=\"container-fluid px-0\"><div class=\"row g-0\"><div class=\"col-12\"><div class=\"cta-panel-inner row\">\n\t<div class=\"col-12\"><div class=\"cta-panel-copy\">\n\t\t\t\t<h2 class=\"t48\" data-reveal>Is a squint behind your result?<\/h2>\n\t\t\t\t<p class=\"t22\" data-reveal>If your eyes do not line up, your result may reflect a squint. Read about <a href=\"\/en\/strabismus-surgery-turkey\/\">strabismus (squint) surgery for adults and children<\/a>. Prof. Dr. Ahmet Sat\u0131c\u0131 examines the eyes, measures the turn and recommends surgery only when glasses or other treatment are not enough. Surgery takes place in a fully equipped, Ministry of Health\u2013licensed operating theatre in Istanbul.<\/p><p class=\"t22\" data-reveal>Try the <a href=\"\/en\/eye-tools\/colour-blindness-test\/\">colour blindness test<\/a>, the <a href=\"\/en\/eye-tools\/astigmatism-test\/\">astigmatism test<\/a>, the <a href=\"\/en\/eye-tools\/amsler-grid-test\/\">Amsler grid test<\/a> for the macula, the <a href=\"\/en\/eye-tools\/eye-prescription-explained\/\">eye prescription reader<\/a>, the <a href=\"\/en\/eye-tools\/visual-acuity-converter\/\">visual acuity converter<\/a> or the <a href=\"\/en\/eye-tools\/eye-colour-calculator\/\">eye colour calculator<\/a>. Or return to all <a href=\"\/en\/eye-tools\/\">free eye tools<\/a>.<\/p>\t\t\t<\/div><\/div>\n\t<div class=\"col-12\"><div class=\"cta-panel-side\"><\/div><\/div>\n<\/div><\/div><\/div><\/div><\/section>\n<!-- Call to Action (Panel) End -->\n\n\n<!-- FAQ (FAQ accordion) Start -->\n<section class=\"faq pad\" id=\"faq\"><div class=\"container-fluid px-0\"><div class=\"row g-0\"><div class=\"col-12\"><div class=\"faq-grid\">\n\t<div class=\"faq-side\">\n\t\t\t\t<h2 class=\"t48\" data-reveal>Stereo vision test: frequently asked questions<\/h2>\n\t\t\t\t\t\t\t<\/div>\n\t\t<div class=\"acc\" data-stagger>\n\t\t\t\t<div class=\"acc-item is-open\"><h3><button type=\"button\" class=\"t32\" aria-expanded=\"true\" aria-controls=\"faq-ab5644f3-a1\" id=\"faq-ab5644f3-q1\">Is this stereopsis test online accurate?<svg width=\"24\" height=\"24\" aria-hidden=\"true\"><use href=\"#i-plus\"\/><\/svg><\/button><\/h3><div class=\"acc-panel\" id=\"faq-ab5644f3-a1\" role=\"region\" aria-labelledby=\"faq-ab5644f3-q1\"><div class=\"acc-body\"><p data-reveal>It gives a rough level if you use real red-cyan glasses, sit at 60 cm and calibrate the screen, but it is less precise than a clinic test. Use it as a screening check.<\/p><\/div><\/div><\/div>\n\t\t\t\t<div class=\"acc-item\"><h3><button type=\"button\" class=\"t32\" aria-expanded=\"false\" aria-controls=\"faq-ab5644f3-a2\" id=\"faq-ab5644f3-q2\">What does a stereopsis test measure?<svg width=\"24\" height=\"24\" aria-hidden=\"true\"><use href=\"#i-plus\"\/><\/svg><\/button><\/h3><div class=\"acc-panel\" id=\"faq-ab5644f3-a2\" role=\"region\" aria-labelledby=\"faq-ab5644f3-q2\"><div class=\"acc-body\"><p data-reveal>It measures stereoacuity: the smallest depth difference, in seconds of arc, that your two eyes together can detect. Clinic tests such as the Titmus, Randot, TNO and Frisby each have their own normal limit.<\/p><\/div><\/div><\/div>\n\t\t\t\t<div class=\"acc-item\"><h3><button type=\"button\" class=\"t32\" aria-expanded=\"false\" aria-controls=\"faq-ab5644f3-a3\" id=\"faq-ab5644f3-q3\">Can I do a stereo vision test without 3D glasses?<svg width=\"24\" height=\"24\" aria-hidden=\"true\"><use href=\"#i-plus\"\/><\/svg><\/button><\/h3><div class=\"acc-panel\" id=\"faq-ab5644f3-a3\" role=\"region\" aria-labelledby=\"faq-ab5644f3-q3\"><div class=\"acc-body\"><p data-reveal>Not this one, which needs red-cyan glasses. Do not use 3D cinema glasses or a VR headset for this page.<\/p><\/div><\/div><\/div>\n\t\t\t\t<div class=\"acc-item\"><h3><button type=\"button\" class=\"t32\" aria-expanded=\"false\" aria-controls=\"faq-ab5644f3-a4\" id=\"faq-ab5644f3-q4\">I failed the stereopsis test. Do I have a problem?<svg width=\"24\" height=\"24\" aria-hidden=\"true\"><use href=\"#i-plus\"\/><\/svg><\/button><\/h3><div class=\"acc-panel\" id=\"faq-ab5644f3-a4\" role=\"region\" aria-labelledby=\"faq-ab5644f3-q4\"><div class=\"acc-body\"><p data-reveal>Not necessarily. Check the glasses, distance and lighting, then repeat the test. If you still see nothing, book an eye examination to look for a squint, lazy eye or a difference between the eyes.<\/p><\/div><\/div><\/div>\n\t\t\t\t<div class=\"acc-item\"><h3><button type=\"button\" class=\"t32\" aria-expanded=\"false\" aria-controls=\"faq-ab5644f3-a5\" id=\"faq-ab5644f3-q5\">Can you have stereopsis with one eye?<svg width=\"24\" height=\"24\" aria-hidden=\"true\"><use href=\"#i-plus\"\/><\/svg><\/button><\/h3><div class=\"acc-panel\" id=\"faq-ab5644f3-a5\" role=\"region\" aria-labelledby=\"faq-ab5644f3-q5\"><div class=\"acc-body\"><p data-reveal>No, stereopsis needs two eyes working together, but people with one eye still judge depth using perspective, size, shading and movement.<\/p><\/div><\/div><\/div>\n\t\t\t\t<div class=\"acc-item\"><h3><button type=\"button\" class=\"t32\" aria-expanded=\"false\" aria-controls=\"faq-ab5644f3-a6\" id=\"faq-ab5644f3-q6\">Can stereopsis be improved or treated?<svg width=\"24\" height=\"24\" aria-hidden=\"true\"><use href=\"#i-plus\"\/><\/svg><\/button><\/h3><div class=\"acc-panel\" id=\"faq-ab5644f3-a6\" role=\"region\" aria-labelledby=\"faq-ab5644f3-q6\"><div class=\"acc-body\"><p data-reveal>Sometimes, depending on cause and age: glasses, patching for lazy eye in children, eye exercises or squint surgery. Results in adults vary and nothing is guaranteed.<\/p><\/div><\/div><\/div>\n\t\t\t\t<div class=\"acc-item\"><h3><button type=\"button\" class=\"t32\" aria-expanded=\"false\" aria-controls=\"faq-ab5644f3-a7\" id=\"faq-ab5644f3-q7\">When should I see an eye doctor?<svg width=\"24\" height=\"24\" aria-hidden=\"true\"><use href=\"#i-plus\"\/><\/svg><\/button><\/h3><div class=\"acc-panel\" id=\"faq-ab5644f3-a7\" role=\"region\" aria-labelledby=\"faq-ab5644f3-q7\"><div class=\"acc-body\"><p data-reveal>Straight away for sudden double vision or vision loss. Otherwise, book an examination if your result is band B, C or D, or you have a squint or lazy eye.<\/p><\/div><\/div><\/div>\n\t\t\t<\/div>\n\t<\/div><\/div><\/div><\/div><script type=\"application\/ld+json\">{\"@context\":\"https:\/\/schema.org\",\"@type\":\"FAQPage\",\"mainEntity\":[{\"@type\":\"Question\",\"name\":\"Is this stereopsis test online accurate?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"It gives a rough level if you use real red-cyan glasses, sit at 60 cm and calibrate the screen, but it is less precise than a clinic test. Use it as a screening check.\"}},{\"@type\":\"Question\",\"name\":\"What does a stereopsis test measure?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"It measures stereoacuity: the smallest depth difference, in seconds of arc, that your two eyes together can detect. 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Otherwise, book an examination if your result is band B, C or D, or you have a squint or lazy eye.\"}}]}<\/script><\/section>\n<!-- FAQ (FAQ accordion) End -->\n\n\n<!-- List (Sources and medical review) Start -->\n<section class=\"psec pad tight\"><div class=\"container-fluid px-0\"><div class=\"row g-0\"><div class=\"col-12\"><details class=\"sources\" data-reveal><summary class=\"t22\">Sources for the facts on this page<\/summary><ol>\n\t\t<li>Stereopsis definition (3D and distance judgement), highest grade of binocular vision, develops at 3\u20136 months; red-cyan anaglyph and polarised tests; conditions that reduce stereopsis (strabismus, amblyopia, anisometropia, congenital cataract): EyeWiki (AAO), &#8220;Stereopsis and Tests for Stereopsis&#8221; https:\/\/eyewiki.aao.org\/Stereopsis_and_tests_for_stereopsis<\/li>\n\t\t<li>Upper limits of normal (TNO 120\u2033, Preschool Randot 70\u2033, Frisby 40\u2033, Distance Randot 160\u2033; 206 participants, mean age 22): Piano, Tidbury &amp; O&#8217;Connor, &#8220;Normative values for near and distance clinical tests of stereoacuity&#8221;, <em>Strabismus<\/em> 2016, https:\/\/livrepository.liverpool.ac.uk\/id\/eprint\/3007093 (DOI 10.1080\/09273972.2016.1242636)<\/li>\n\t\t<li>Adult Randot Preschool means of 30\u201340\u2033: Birch et al., &#8220;Randot Preschool Stereoacuity Test: Normative Data and Validity&#8221;, <em>J AAPOS<\/em> 2008, https:\/\/research-information.bris.ac.uk\/en\/publications\/randotsupsup-preschool-stereoacuity-test-normative-data-and-valid\/<\/li>\n\t\t<li>About 7% stereoblindness in adults under 60: Chopin, Bavelier &amp; Levi, <em>Ophthalmic and Physiological Optics<\/em> 2019, https:\/\/doi.org\/10.1111\/opo.12607 (summary: https:\/\/www.ski.org\/?p=15507)<\/li>\n\t\t<li>Adult strabismus surgery and stereopsis (132 adults; 48% better than 100\u2033; 21.5% none; childhood-onset poorest): Rock et al., <em>Canadian Journal of Ophthalmology<\/em> 2025, https:\/\/cris.tau.ac.il\/en\/publications\/improvement-of-stereopsis-following-strabismus-surgery-in-adults-\/<\/li>\n\t\t<li>Dichoptic training in adults, mixed results: AAO, &#8220;Amblyopia: emerging treatments&#8221; https:\/\/www.aao.org\/disease-review\/amblyopia-emerging-treatments<\/li>\n\t\t<li>Squint definition, treatment options (glasses, exercises, surgery, injections), see a GP for an adult squint: NHS, &#8220;Squint&#8221; https:\/\/www.nhs.uk\/conditions\/squint\/<\/li>\n\t\t<li>Lazy eye, treatment ideally before age 7: NHS, &#8220;Lazy eye&#8221; https:\/\/www.nhs.uk\/conditions\/lazy-eye\/<\/li>\n\t\t<li>Double vision, emergency and urgent signs: NHS, &#8220;Double vision&#8221; https:\/\/www.nhs.uk\/conditions\/double-vision\/<\/li>\n\t\t<li>One-eye (monocular) depth cues such as perspective, motion parallax, shading, occlusion: &#8220;Cue combination for depth perception in macular degeneration: Motion parallax augments disparity&#8221;, PMC https:\/\/pmc.ncbi.nlm.nih.gov\/articles\/PMC12849822\/<\/li>\n\t\t<li>Emergency numbers: European Commission https:\/\/digital-strategy.ec.europa.eu\/en\/policies\/112 \u00b7 T\u00fcrkiye 112: https:\/\/www.112.gov.tr\/kilis\/acil-durumlarda-tek-numara-112 \u00b7 UK 999: https:\/\/www.nhs.uk\/nhs-services\/urgent-and-emergency-care-services\/when-to-call-999\/ \u00b7 Canada 911: https:\/\/parks.canada.ca\/voyage-travel\/securite-safety\/urgence-emergency<\/li>\n\t\t<li>Own calculations (not external facts): disparity formula (arcsec = shift\/distance \u00d7 206265); pixel pitch needed for 70\u2033 and 40\u2033 at 60 cm; about 1.6% chance of passing a level by guessing (1\/4)^3; band cut-offs, which are screening choices for the reviewing surgeon to confirm.<\/li>\n\t<\/ol><\/details><\/div><\/div><\/div><\/section>\n<!-- List (Sources and medical review) End -->\n\n\n<!-- Call to Action (Assessment band) Start -->\n<section class=\"cta-band\" id=\"assessment\">\n\t<div class=\"contact-bg\" aria-hidden=\"true\"><span><\/span><span><\/span><span><\/span><\/div>\n\t<div class=\"cta-inner pad container-fluid\"><div class=\"row\">\n\t\t<div class=\"col-12 col-lg-7\"><div class=\"cta-copy\">\n\t\t\t\t\t\t<h2 class=\"t64\" data-reveal>Do your eyes work together?<\/h2>\n\t\t\t\t\t\t<p class=\"t22\" data-reveal>Send us your result and any eye reports, and Prof. Dr. Ahmet Sat\u0131c\u0131 will tell you whether a squint assessment is worth doing, with no obligation.<\/p>\t\t\t\t\t\t<div class=\"cta-actions\" data-reveal><a class=\"pill pill-white\" href=\"#tool\"><span class=\"pill-dot\" aria-hidden=\"true\"><\/span><span class=\"pill-label\">Get a free squint assessment<\/span><\/a><a class=\"pill pill-line\" href=\"https:\/\/wa.me\/4915783739465?text=Hello%20Laser%20Istanbul%20Clinic%2C%20I%20would%20like%20some%20information%20about%20eye%20treatment.%20Sent%20from%3A%20https%3A%2F%2Flaseristanbulclinic.com%2Fen%2F\" target=\"_blank\" rel=\"noopener\"><span class=\"pill-dot\" aria-hidden=\"true\"><\/span><span class=\"pill-label\">WhatsApp: +49 157 8373 9465<\/span><\/a><\/div>\n\t\t\t\t\t<\/div><\/div>\n\t\t\t\t<div class=\"col-12 col-lg-5\"><div class=\"proof-card\" data-reveal>\n\t\t\t\t\t\t<div class=\"proof-text\">\n\t\t\t\t\t\t\t\t<h3 class=\"t48\">3 eye surgeons<\/h3>\n\t\t\t\t\t\t\t\t\t\t\t\t<p class=\"t22\">Your case is reviewed by a named surgeon, not a salesperson. Reply within <span class=\"ph\">{{response time}}<\/span>.<\/p>\n\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t\t<ul class=\"avatars\" aria-label=\"Our surgeons\">\n\t\t\t\t\t\t\t\t<li><img decoding=\"async\" width=\"150\" height=\"150\" src=\"https:\/\/laseristanbulclinic.com\/wp-content\/uploads\/2026\/10\/prof-dr-ahmet-satici-ophthalmologist-istanbul-150x150.webp\" class=\"attachment-thumbnail size-thumbnail\" alt=\"Prof. Dr. Ahmet Sat\u0131c\u0131\" loading=\"lazy\" srcset=\"https:\/\/laseristanbulclinic.com\/wp-content\/uploads\/2026\/10\/prof-dr-ahmet-satici-ophthalmologist-istanbul-150x150.webp 150w, https:\/\/laseristanbulclinic.com\/wp-content\/uploads\/2026\/10\/prof-dr-ahmet-satici-ophthalmologist-istanbul-300x300.webp 300w, https:\/\/laseristanbulclinic.com\/wp-content\/uploads\/2026\/10\/prof-dr-ahmet-satici-ophthalmologist-istanbul-768x768.webp 768w, https:\/\/laseristanbulclinic.com\/wp-content\/uploads\/2026\/10\/prof-dr-ahmet-satici-ophthalmologist-istanbul.webp 806w\" sizes=\"auto, (max-width: 150px) 100vw, 150px\" \/><span class=\"tip\">Prof. Dr. Ahmet Sat\u0131c\u0131<\/span><\/li>\n\t\t\t\t\t\t\t\t<li><img decoding=\"async\" width=\"150\" height=\"150\" src=\"https:\/\/laseristanbulclinic.com\/wp-content\/uploads\/2026\/10\/doc-dr-muhammet-derda-ozer-cornea-specialist-istanbul-150x150.webp\" class=\"attachment-thumbnail size-thumbnail\" alt=\"Do\u00e7. Dr. Muhammet Derda \u00d6zer\" loading=\"lazy\" \/><span class=\"tip\">Do\u00e7. Dr. Muhammet Derda \u00d6zer<\/span><\/li>\n\t\t\t\t\t\t\t\t<li><img decoding=\"async\" width=\"150\" height=\"150\" src=\"https:\/\/laseristanbulclinic.com\/wp-content\/uploads\/2026\/10\/op-dr-aysan-bayram-eye-surgeon-istanbul-150x150.webp\" class=\"attachment-thumbnail size-thumbnail\" alt=\"Op. Dr. Aysan Bayram\" loading=\"lazy\" srcset=\"https:\/\/laseristanbulclinic.com\/wp-content\/uploads\/2026\/10\/op-dr-aysan-bayram-eye-surgeon-istanbul-150x150.webp 150w, https:\/\/laseristanbulclinic.com\/wp-content\/uploads\/2026\/10\/op-dr-aysan-bayram-eye-surgeon-istanbul-300x300.webp 300w, https:\/\/laseristanbulclinic.com\/wp-content\/uploads\/2026\/10\/op-dr-aysan-bayram-eye-surgeon-istanbul-768x768.webp 768w, https:\/\/laseristanbulclinic.com\/wp-content\/uploads\/2026\/10\/op-dr-aysan-bayram-eye-surgeon-istanbul.webp 806w\" sizes=\"auto, (max-width: 150px) 100vw, 150px\" \/><span class=\"tip\">Op. Dr. Aysan Bayram<\/span><\/li>\n\t\t\t\t\t\t\t<\/ul>\n\t\t\t\t\t<\/div><\/div>\n\t\t\t<\/div><\/div>\n<\/section>\n<!-- Call to Action (Assessment band) End -->\n","protected":false},"excerpt":{"rendered":"","protected":false},"author":0,"featured_media":0,"parent":1761,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"_acf_changed":false,"footnotes":""},"class_list":["post-1891","page","type-page","status-publish","hentry"],"acf":[],"_links":{"self":[{"href":"https:\/\/laseristanbulclinic.com\/en\/wp-json\/wp\/v2\/pages\/1891","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/laseristanbulclinic.com\/en\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/laseristanbulclinic.com\/en\/wp-json\/wp\/v2\/types\/page"}],"replies":[{"embeddable":true,"href":"https:\/\/laseristanbulclinic.com\/en\/wp-json\/wp\/v2\/comments?post=1891"}],"version-history":[{"count":2,"href":"https:\/\/laseristanbulclinic.com\/en\/wp-json\/wp\/v2\/pages\/1891\/revisions"}],"predecessor-version":[{"id":3036,"href":"https:\/\/laseristanbulclinic.com\/en\/wp-json\/wp\/v2\/pages\/1891\/revisions\/3036"}],"up":[{"embeddable":true,"href":"https:\/\/laseristanbulclinic.com\/en\/wp-json\/wp\/v2\/pages\/1761"}],"wp:attachment":[{"href":"https:\/\/laseristanbulclinic.com\/en\/wp-json\/wp\/v2\/media?parent=1891"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}