{"id":4245,"date":"2023-10-05T09:24:11","date_gmt":"2023-10-05T03:54:11","guid":{"rendered":"https:\/\/wisethalamus.com\/?p=4245"},"modified":"2026-09-22T03:17:31","modified_gmt":"2026-09-21T21:47:31","slug":"myopia-human-evolution","status":"publish","type":"post","link":"https:\/\/wisethalamus.com\/wise-redesign\/myopia-human-evolution\/","title":{"rendered":"From Far-Sighted to Near-Sighted: How Myopia Shaped Human Evolution"},"content":{"rendered":"\n<p class=\"wp-block-paragraph\">Myopia, commonly known as nearsightedness, is a ocular condition where a person can see nearby objects clearly, but distant objects appear hazy. Myopia affects millions of people worldwide, and is often considered a disability. But, if it is truly a disability then why each successive generation is becoming increasingly more myopic? <strong>Can there be &#8220;hidden&#8221; advantages presented to us via myopia? <\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Before we explore this interesting line of thought, we first need to understand the anatomy and physiology of our eyes. <\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"1280\" height=\"720\" src=\"https:\/\/wisethalamus.com\/wp-content\/uploads\/2023\/10\/Myopia-eye-anatomy.png\" alt=\"\" class=\"wp-image-4253\" srcset=\"https:\/\/wisethalamus.com\/wise-redesign\/wp-content\/uploads\/2023\/10\/Myopia-eye-anatomy.png 1280w, https:\/\/wisethalamus.com\/wise-redesign\/wp-content\/uploads\/2023\/10\/Myopia-eye-anatomy-300x169.png 300w, https:\/\/wisethalamus.com\/wise-redesign\/wp-content\/uploads\/2023\/10\/Myopia-eye-anatomy-1024x576.png 1024w, https:\/\/wisethalamus.com\/wise-redesign\/wp-content\/uploads\/2023\/10\/Myopia-eye-anatomy-768x432.png 768w, https:\/\/wisethalamus.com\/wise-redesign\/wp-content\/uploads\/2023\/10\/Myopia-eye-anatomy-800x450.png 800w\" sizes=\"auto, (max-width: 1280px) 100vw, 1280px\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Here are the key players:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>The Cornea:<\/strong> This is the transparent outermost layer of the eye through which light enters our eyes. Cornea helps focus incoming light.<\/li>\n\n\n\n<li><strong>The Iris:<\/strong> This lies behind cornea and serves as an aperture. Not all light entering cornea is allowed inside. Depending on how much amount of light is needed, this aperture- maintained by iris- either widens or shrinks. <\/li>\n\n\n\n<li><strong>The Lens:<\/strong> Located behind the iris, the lens focusses the incoming light onto the retina.<\/li>\n\n\n\n<li><strong>The Retina:<\/strong> This light-sensitive screen lines the back of the eye. This biological screen contains specialized cells called rods and cones, which capture and process light into electrochemical signals.<\/li>\n\n\n\n<li><strong>The Optic Nerve:<\/strong> Acting as a cable, the optic nerve carries the electrochemical signals generated by retina to the brain for interpretation. The signals from retina get converted back into images in the brain.<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">If the eyeball is too long or the cornea is too curved, light will incorrectly focus in front of the retina instead of on it. This results in blurry distance vision, medically known as myopia. Myopia can be corrected with concave glasses, contact lenses, or refractive surgery, but it cannot be cured. <\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"576\" src=\"https:\/\/wisethalamus.com\/wp-content\/uploads\/2023\/10\/Myopia-pathology-1024x576.png\" alt=\"\" class=\"wp-image-4254\" srcset=\"https:\/\/wisethalamus.com\/wise-redesign\/wp-content\/uploads\/2023\/10\/Myopia-pathology-1024x576.png 1024w, https:\/\/wisethalamus.com\/wise-redesign\/wp-content\/uploads\/2023\/10\/Myopia-pathology-300x169.png 300w, https:\/\/wisethalamus.com\/wise-redesign\/wp-content\/uploads\/2023\/10\/Myopia-pathology-768x432.png 768w, https:\/\/wisethalamus.com\/wise-redesign\/wp-content\/uploads\/2023\/10\/Myopia-pathology-800x450.png 800w, https:\/\/wisethalamus.com\/wise-redesign\/wp-content\/uploads\/2023\/10\/Myopia-pathology.png 1280w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">So, myopia is defective vision. But why <a href=\"https:\/\/pubmed.ncbi.nlm.nih.gov\/29901472\/\" target=\"_blank\" rel=\"noreferrer noopener\">~50% population<\/a> in industrialized countries suffer from this? <a href=\"https:\/\/pubmed.ncbi.nlm.nih.gov\/8002254\" target=\"_blank\" rel=\"noreferrer noopener\">Epidemiological studies<\/a> show that younger generations are getting impacted with myopia more frequently than older ones. Both <a href=\"https:\/\/www.ncbi.nlm.nih.gov\/pmc\/articles\/PMC3930282\/\" target=\"_blank\" rel=\"noreferrer noopener\">prevalence and incidence<\/a> of myopia is incrementally increasing in every population around the world. Is it a curse of modern life? <\/p>\n\n\n\n<p class=\"has-text-align-center wp-block-paragraph\" style=\"font-size:29px\"><strong>Or is myopia an evolutionary gift?<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">It is widely believed that myopia is more common in people who do a lot of close-up work, such as reading, writing, and using computers. If you observe human beings closely, <strong>almost always we are relying in accuracy of near vision.<\/strong> <strong>We don&#8217;t have to climb trees and look out for predators.<\/strong> But we definitely have to read books and work on computer screens. Thus <strong>nearsightedness is more often in use for us. <\/strong><\/p>\n\n\n\n<p class=\"has-text-align-center wp-block-paragraph\" style=\"font-size:24px\"><strong><em>Evolution enhances what is important and sheds off what is not. <\/em><\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">So, if distant vision is not offering significant survival benefits it is bound to become weaker and weaker as human evolve. Having myopia or nearsightedness may have had an advantage in tasks that required close-up vision. Our survival and success depends on how well we assess facial expressions of people we are interacting with. Negotiating successfully with people around us is a key leadership skill. Someone who has mastered this skill heavily relies on<strong> keenly observing all the physical signals generated by faces and hands of people <\/strong>he\/she is conversing with. In today&#8217;s information age, our capabilities are judged based on how good we are with the information we retain from whatever we read or how we use computers. <\/p>\n\n\n\n<p class=\"wp-block-paragraph\">There are now <a href=\"https:\/\/www.ncbi.nlm.nih.gov\/pmc\/articles\/PMC4306218\/\" target=\"_blank\" rel=\"noreferrer noopener\">scientific evidences <\/a>suggesting that myopia may have played a role in the evolution of human intelligence. According to this theory, our ancestors who were , such as making tools and identifying edible plants. This may have led to the development of higher cognitive abilities, such as problem-solving and abstract thinking. <a href=\"https:\/\/www.ncbi.nlm.nih.gov\/pmc\/articles\/PMC4306218\/\" target=\"_blank\" rel=\"noreferrer noopener\">Research<\/a> suggests that myopia may confer cognitive advantages. The constant need to focus on nearby objects can enhance attention to detail and object recognition skills. <\/p>\n\n\n\n<p class=\"wp-block-paragraph\">So, if you&#8217;re the one who spots the smallest details in a painting or quickly finds hidden items in a cluttered room, your myopic vision might be the secret behind it.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">To conclude, myopia seems to be an outcome of our evolution. Myopia might associated with higher intelligence and social capabilities, thus providing survival advantage in this modern world. If you find this interesting, please do read my articles on how human evolution and survival advantage lies in connecting people and making meaningful organizations. Please click <a href=\"https:\/\/wisethalamus.com\/category\/wise-series\/masters-of-evolution\/\"><strong><em>HERE<\/em><\/strong><\/a> to read.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n\n\n\n<p class=\"wp-block-paragraph\" style=\"font-size:29px\"><strong><span style=\"text-decoration: underline;\">References:<\/span><\/strong><\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li><a href=\"https:\/\/www.ncbi.nlm.nih.gov\/pmc\/articles\/PMC3930282\/\" target=\"_blank\" rel=\"noreferrer noopener\">Foster, P. J., &amp; Jiang, Y. H. (2014, January 10). <em>Epidemiology of myopia<\/em>. Eye; Nature Portfolio. https:\/\/doi.org\/10.1038\/eye.2013.280<\/a><\/li>\n\n\n\n<li><a href=\"https:\/\/pubmed.ncbi.nlm.nih.gov\/29901472\/\" target=\"_blank\" rel=\"noreferrer noopener\">Cooper, J., &amp; Tkatchenko, A. V. (2018, July 1). <em>A Review of Current Concepts of the Etiology and Treatment of Myopia<\/em>. Eye &amp; Contact Lens-science and Clinical Practice; Lippincott Williams &amp; Wilkins. https:\/\/doi.org\/10.1097\/icl.0000000000000499<\/a><\/li>\n\n\n\n<li><a href=\"https:\/\/www.ncbi.nlm.nih.gov\/pmc\/articles\/PMC4306218\/\" target=\"_blank\" rel=\"noreferrer noopener\">Verma, A., &amp; Verma, A. (2015, January 1). <em>A Novel Review of the Evidence Linking Myopia and High Intelligence<\/em>. Journal of Ophthalmology; Hindawi Publishing Corporation. https:\/\/doi.org\/10.1155\/2015\/271746<\/a><\/li>\n<\/ol>\n","protected":false},"excerpt":{"rendered":"<p>Myopia, commonly known as nearsightedness, is a ocular condition where a person can see nearby objects clearly, but distant objects appear hazy. Myopia affects millions of people worldwide, and is often considered a disability. But, if it is truly a disability then why each successive generation is becoming increasingly more myopic? Can there be &#8220;hidden&#8221;&#8230;<\/p>\n","protected":false},"author":1,"featured_media":4251,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_kad_post_transparent":"","_kad_post_title":"","_kad_post_layout":"","_kad_post_sidebar_id":"","_kad_post_content_style":"","_kad_post_vertical_padding":"","_kad_post_feature":"","_kad_post_feature_position":"","_kad_post_header":false,"_kad_post_footer":false,"_kad_post_classname":"","footnotes":""},"categories":[497],"tags":[317,314,319,313,315,505,311,312,320,316,318,502],"class_list":["post-4245","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-evolution-and-human-origins","tag-cognitive-evolution","tag-evolutionary-advantage","tag-evolutionary-biology","tag-eye-health","tag-human-physiology","tag-masters-of-evolution","tag-myopia","tag-nearsightedness","tag-survival-advantage","tag-vision-impairment","tag-visual-perception","tag-wonderstanding"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.5 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>How Myopia Shaped Human Evolution<\/title>\n<meta name=\"description\" content=\"Explore the intriguing link between myopia and human evolution. 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