{"version":"1.0","provider_name":"Best Eye Hospitals","provider_url":"https:\/\/www.besteyehospitals.com\/blog","author_name":"dreye","author_url":"https:\/\/www.besteyehospitals.com\/blog\/author\/dreye\/","title":"visual field defect: Definition, Uses, and Clinical Overview - Best Eye Hospitals","type":"rich","width":600,"height":338,"html":"<blockquote class=\"wp-embedded-content\" data-secret=\"11uoRzRjrg\"><a href=\"https:\/\/www.besteyehospitals.com\/blog\/visual-field-defect-definition-uses-and-clinical-overview\/\">visual field defect: Definition, Uses, and Clinical Overview<\/a><\/blockquote><iframe sandbox=\"allow-scripts\" security=\"restricted\" src=\"https:\/\/www.besteyehospitals.com\/blog\/visual-field-defect-definition-uses-and-clinical-overview\/embed\/#?secret=11uoRzRjrg\" width=\"600\" height=\"338\" title=\"&#8220;visual field defect: Definition, Uses, and Clinical Overview&#8221; &#8212; Best Eye Hospitals\" data-secret=\"11uoRzRjrg\" frameborder=\"0\" marginwidth=\"0\" marginheight=\"0\" scrolling=\"no\" class=\"wp-embedded-content\"><\/iframe><script type=\"text\/javascript\">\n\/* <![CDATA[ *\/\n\/*! This file is auto-generated *\/\n!function(d,l){\"use strict\";l.querySelector&&d.addEventListener&&\"undefined\"!=typeof URL&&(d.wp=d.wp||{},d.wp.receiveEmbedMessage||(d.wp.receiveEmbedMessage=function(e){var t=e.data;if((t||t.secret||t.message||t.value)&&!\/[^a-zA-Z0-9]\/.test(t.secret)){for(var s,r,n,a=l.querySelectorAll('iframe[data-secret=\"'+t.secret+'\"]'),o=l.querySelectorAll('blockquote[data-secret=\"'+t.secret+'\"]'),c=new RegExp(\"^https?:$\",\"i\"),i=0;i<o.length;i++)o[i].style.display=\"none\";for(i=0;i<a.length;i++)s=a[i],e.source===s.contentWindow&&(s.removeAttribute(\"style\"),\"height\"===t.message?(1e3<(r=parseInt(t.value,10))?r=1e3:~~r<200&&(r=200),s.height=r):\"link\"===t.message&&(r=new URL(s.getAttribute(\"src\")),n=new URL(t.value),c.test(n.protocol))&&n.host===r.host&&l.activeElement===s&&(d.top.location.href=t.value))}},d.addEventListener(\"message\",d.wp.receiveEmbedMessage,!1),l.addEventListener(\"DOMContentLoaded\",function(){for(var e,t,s=l.querySelectorAll(\"iframe.wp-embedded-content\"),r=0;r<s.length;r++)(t=(e=s[r]).getAttribute(\"data-secret\"))||(t=Math.random().toString(36).substring(2,12),e.src+=\"#?secret=\"+t,e.setAttribute(\"data-secret\",t)),e.contentWindow.postMessage({message:\"ready\",secret:t},\"*\")},!1)))}(window,document);\n\/\/# sourceURL=https:\/\/www.besteyehospitals.com\/blog\/wp-includes\/js\/wp-embed.min.js\n\/* ]]> *\/\n<\/script>\n","description":"A visual field defect is a loss, blur, or \u201cmissing area\u201d in the overall area you can see while looking straight ahead. It can affect side vision, central vision, or specific patterns such as one half of vision in both eyes. The term is commonly used in eye care, neurology, and occupational settings (such as driving or workplace safety). It is usually identified by symptoms, bedside screening, or formal visual field testing."}