{"version":"1.0","provider_name":"Cheap Prescription Glasses","provider_url":"https:\/\/www.cheapglasses123.com\/glasses","author_name":"Glasses Expert","author_url":"https:\/\/www.cheapglasses123.com\/glasses\/author\/admin","title":"Bifocal Glasses for Reading Purposes - Cheap Prescription Glasses","type":"rich","width":600,"height":338,"html":"<blockquote class=\"wp-embedded-content\" data-secret=\"7FxuEpZ5Jv\"><a href=\"https:\/\/www.cheapglasses123.com\/glasses\/bifocal-glasses-for-reading-purposes.html\">Bifocal Glasses for Reading Purposes<\/a><\/blockquote><iframe sandbox=\"allow-scripts\" security=\"restricted\" src=\"https:\/\/www.cheapglasses123.com\/glasses\/bifocal-glasses-for-reading-purposes.html\/embed#?secret=7FxuEpZ5Jv\" width=\"600\" height=\"338\" title=\"&#8220;Bifocal Glasses for Reading Purposes&#8221; &#8212; Cheap Prescription Glasses\" data-secret=\"7FxuEpZ5Jv\" frameborder=\"0\" marginwidth=\"0\" marginheight=\"0\" scrolling=\"no\" class=\"wp-embedded-content\"><\/iframe><script>\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.cheapglasses123.com\/glasses\/wp-includes\/js\/wp-embed.min.js\n<\/script>\n","description":"Bifocal lenses were discovered by Benjamin Franklin in the beginning of the 18th century. Bifocal lenses are generally used by people who have nearsightedness. In the construction of bifocal lenses, concave lenses are used which is known for the correction of nearsightedness and convex lenses are used to treat farsightedness."}