{"id":24815,"date":"2026-05-27T09:05:10","date_gmt":"2026-05-27T09:05:10","guid":{"rendered":"https:\/\/www.prooptica.pt\/?p=24815"},"modified":"2026-05-27T09:05:54","modified_gmt":"2026-05-27T09:05:54","slug":"sera-phda-ou-um-problema-de-visao-funcional","status":"publish","type":"post","link":"https:\/\/www.prooptica.pt\/en\/sera-phda-ou-um-problema-de-visao-funcional\/","title":{"rendered":"Is it ADHD or a functional vision problem?"},"content":{"rendered":"

Is it ADHD or a functional vision problem?<\/strong><\/p>\n

When a child shows difficulties with attention, constant restlessness, or poor academic performance, it is common to immediately associate these signs with Attention Deficit Hyperactivity Disorder (ADHD). However, in many cases, the problem may be related to something less obvious: difficulties in functional vision.<\/p>\n

While most traditional visual assessments confirm if a child \u201csees well\u201d at a distance, the truth is that vision goes far beyond the simple ability to read letters on a chart. Functional vision involves eye coordination, focusing ability, visual tracking, and constant adaptation between different distances\u2014skills that are essential for academic performance.<\/p>\n

When eyes don't work as a team<\/strong><\/h6>\n

During activities like reading and writing, eyes need to work in a synchronised way. When there are changes such as Convergence Insufficiency, a child may find it difficult to maintain focus on words, leading to visual fatigue, headaches, blurred or double vision, and difficulty concentrating.<\/p>\n

Faced with this discomfort, many children end up avoiding schoolwork, easily losing concentration, fidgeting in their chairs, or showing frustration during reading \u2014 behaviours often confused with ADHD.<\/p>\n

Red flags for parents and teachers to be aware of<\/strong><\/h6>\n

Some symptoms can indicate the existence of a functional vision problem:<\/p>\n

    \n
  • Difficulty with reading and writing<\/li>\n
  • Frequent complaints of eye strain or headaches<\/li>\n
  • Losing lines while reading<\/li>\n
  • Need to cover one eye to focus<\/li>\n
  • Lack of concentration after a period of work<\/li>\n
  • Agitation or avoidance of school tasks<\/li>\n<\/ul>\n
    The importance of a comprehensive visual assessment<\/strong><\/h6>\n

    Various scientific studies demonstrate a significant association between visual difficulties and ADHD diagnoses. For this reason, specialists advocate that any child with symptoms of attention deficit should undergo a complete functional vision assessment.<\/p>\n

    In many cases, identifying and treating these changes can significantly improve the child's visual comfort, school performance, and quality of life.<\/p>\n

    Because a lack of attention isn't always just a behavioural issue \u2013 sometimes, it's the visual system asking for help.<\/p>\n

    Reference sources: CITT Study (2008) and DeCarlo et al. (2016, Optom Vis Sci).<\/em><\/p>","protected":false},"excerpt":{"rendered":"

    Ser\u00e1 PHDA ou um problema de vis\u00e3o funcional? Quando uma crian\u00e7a apresenta dificuldades de aten\u00e7\u00e3o, agita\u00e7\u00e3o constante ou baixo rendimento escolar, \u00e9 comum associar imediatamente estes sinais \u00e0 Perturba\u00e7\u00e3o por D\u00e9fice de Aten\u00e7\u00e3o com Hiperatividade (PHDA). No entanto, em muitos casos, o problema pode estar relacionado com algo menos evidente: dificuldades na vis\u00e3o funcional. Embora […]<\/p>\n","protected":false},"author":2,"featured_media":24816,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[238,187],"tags":[],"class_list":["post-24815","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-insight","category-lentes"],"yoast_head":"\nSer\u00e1 PHDA ou um problema de vis\u00e3o funcional?<\/title>\n<meta name=\"description\" content=\"Identificar e tratar estas altera\u00e7\u00f5es pode melhorar o conforto visual, o desempenho escolar e a qualidade de vida da crian\u00e7a.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.prooptica.pt\/en\/sera-phda-ou-um-problema-de-visao-funcional\/\" \/>\n<meta property=\"og:locale\" content=\"en_GB\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta 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