Search
Close this search box.

Por que os olhos das pessoas têm cores diferentes?

Como médico especialista em oftalmologia, é sempre interessante abordar questões relacionadas aos olhos e suas características. Uma pergunta comum é por que os olhos das pessoas têm cores diferentes. Então, permita-me explicar brevemente o motivo por trás dessa variação na cor dos olhos.

A cor dos olhos é determinada principalmente pela quantidade e tipo de pigmentos presentes na íris, bem como pela maneira como a íris dispersa a luz que passa por ela. A íris é a parte colorida do olho e tem uma camada anterior e uma camada posterior. O principal pigmento responsável pela cor dos olhos é a melanina, que também é responsável pela cor da nossa pele e cabelo.

Olhos castanhos têm uma maior quantidade de melanina na camada anterior da íris, enquanto olhos azuis têm uma quantidade menor de melanina. Os olhos verdes, por outro lado, têm uma quantidade intermediária de melanina. A dispersão da luz na íris também desempenha um papel na percepção da cor dos olhos, e isso pode afetar a maneira como percebemos a cor em diferentes condições de iluminação.

Além da melanina, outros fatores, como herança genética, também influenciam a cor dos olhos. A cor dos olhos é uma característica poligênica, o que significa que é determinada por vários genes. Isso explica por que a cor dos olhos pode variar amplamente entre membros da mesma família.

Em resumo, a cor dos olhos é determinada pela quantidade e tipo de pigmentos presentes na íris, a dispersão da luz na íris e fatores genéticos. Essa combinação de fatores resulta na ampla variedade de cores de olhos que vemos nas pessoas ao nosso redor.

Picture of Dr. Lucas Tavares Faria
Dr. Lucas Tavares Faria

Dr. Lucas Tavares Faria é natural de Belo Horizonte, filho de Oftalmologista e descendente da primeira Óptica da cidade. Especialização em Oftalmologia e o fellowship de retina clínica e cirúrgica realizados no Centro Oftalmológico de MG, vem se dedicando ao tratamento clínico e cirúrgico das afecções oculares com foco nas cirurgias de Catarata, Retina e Refrativa.

Todos os Posts

Veja também

1.984 comentários em “Por que os olhos das pessoas têm cores diferentes?”

  1. roloflix.com

    Witth havin so muuch ontent andd artiles do you ever ruun into any isues oof pplagorism
    oor ckpyright infringement? My website has a lot off completely unique conternt I’ve either written mtself or
    outsourced but iit sems a lot of it iis opping iit uup all over the
    internet withou mmy permission. Do you know any methos to
    hhelp prvent content from bing ripped off? I’d really
    appreciate it.

    Responder
  3. 795

    Thank yoou for the auspicious writeup. It inn fzct was a amusementt account it.
    Loook advanced to more added agrreeable from you!
    By thhe way, hhow could we communicate?

    Responder
  7. 674

    Everyone loves what yyou guyus aree up too. Suuch clever work aand reporting!

    Keep up tthe superb wofks guys I’ve addeed yyou
    guys tto my personal blogroll.

    Responder
  8. tinyurl.com

    Do yoou mind iif I quote a couple off yiur posts as long ass I provide credit
    and source bback to your blog? My blog is inn thee exact saqme area of interest aas ypurs
    and my visitors wwould definitgely benefit from somne
    off the information you present here. Please let
    mee know if his okay wirh you. Thankk you!

    Responder
  10. 776

    What’s upp i am kavin, its my first occasion tto coimmenting anyplace, when i read thius piece of wriing i
    thought i could also make comment due tto this brilliant piece off writing.

    Responder
  39. AllanGearf

    pharmacies in mexico that ship to usa buying prescription drugs in mexico online or pharmacies in mexico that ship to usa
    http://pipeplugsinc.biz/__media__/js/netsoltrademark.php?d=mexpharmacy.sbs buying prescription drugs in mexico online
    [url=http://tgbr.biz/__media__/js/netsoltrademark.php?d=mexpharmacy.sbs]п»їbest mexican online pharmacies[/url] buying from online mexican pharmacy and [url=http://bbs1.857moli.com/home.php?mod=space&uid=426891]п»їbest mexican online pharmacies[/url] pharmacies in mexico that ship to usa

    Responder
  170. Manuelskirl

    buy medicines online in india п»їlegitimate online pharmacies india or mail order pharmacy india
    http://peepers-glasses.com/__media__/js/netsoltrademark.php?d=indianpharmacy.life india online pharmacy
    [url=http://bcapsbar.com/__media__/js/netsoltrademark.php?d=indianpharmacy.life]online shopping pharmacy india[/url] reputable indian online pharmacy and [url=https://www.ixbren.net/home.php?mod=space&uid=624943]Online medicine order[/url] online pharmacy india

    Responder
  267. Robertabext

    canada drug pharmacy: canadian pharmacy ltd – best mail order pharmacy canada canadapharmacy.guru
    mexican drugstore online [url=https://mexicanpharmacy.company/#]pharmacies in mexico that ship to usa[/url] buying prescription drugs in mexico online mexicanpharmacy.company

    Responder
  505. Charlesvak

    Pharmacie en ligne livraison gratuite Pharmacie en ligne livraison gratuite or Acheter mГ©dicaments sans ordonnance sur internet
    http://secure.duoservers.com/?lang=en&s_id=123179&rdomain=pharmacieenligne.guru Pharmacie en ligne livraison gratuite
    [url=https://maps.google.ae/url?q=https://pharmacieenligne.guru]Pharmacie en ligne livraison rapide[/url] acheter medicament a l etranger sans ordonnance and [url=http://www.gearcup.cn/home.php?mod=space&uid=119313]Pharmacie en ligne livraison rapide[/url] Pharmacie en ligne pas cher

    Responder
  536. tlover tonet

    I have been browsing on-line more than 3 hours today, yet I never found any interesting article like yours. It is lovely worth enough for me. In my opinion, if all website owners and bloggers made good content as you did, the internet will probably be much more helpful than ever before.

    Responder
  875. Michaelponee

    buy prescription drugs without doctor [url=https://edwithoutdoctorprescription.store/#]sildenafil without a doctor’s prescription[/url] ed meds online without doctor prescription

    Responder
  934. Josephsowly

    Pharmacie en ligne livraison gratuite acheter medicament a l etranger sans ordonnance or Acheter mГ©dicaments sans ordonnance sur internet
    http://www.google.cm/url?sa=i&rct=j&q=w4&source=images&cd=&cad=rja&uact=8&docid=IFutAwmU3vpbNM&tbnid=OFjjVOSMg9C9UM:://cialissansordonnance.shop/pages/about-us pharmacie ouverte 24/24
    Pharmacie en ligne livraison 24h п»їpharmacie en ligne and pharmacie ouverte 24/24 acheter medicament a l etranger sans ordonnance

    Responder
  1000. TimothyTratt

    buying prescription drugs in mexico online [url=http://mexicanpharm.shop/#]Online Mexican pharmacy[/url] reputable mexican pharmacies online mexicanpharm.shop

    Responder
  1315. GMB CTR

    When I originally commented I clicked the -Notify me when new feedback are added- checkbox and now every time a comment is added I get 4 emails with the identical comment. Is there any way you may take away me from that service? Thanks!

    Responder
  1910. JamesShoxy

    how to get amoxicillin [url=http://amoxicillina.top/#]amoxicillin 500mg without prescription[/url] where to buy amoxicillin 500mg without prescription

    Responder
  1938. The Genius Wave Review

    Wonderful beat ! I would like to apprentice even as you amend your site, how can i subscribe for a weblog web site? The account helped me a appropriate deal. I were a little bit familiar of this your broadcast offered shiny transparent idea

    Responder
  1941. boostaro reviews

    I discovered your blog site on google and check a few of your early posts. Continue to keep up the very good operate. I just additional up your RSS feed to my MSN News Reader. Seeking forward to reading more from you later on!…

    Responder
  1949. Billionaire brain wave reviews

    Write more, thats all I have to say. Literally, it seems as though you relied on the video to make your point. You clearly know what youre talking about, why throw away your intelligence on just posting videos to your weblog when you could be giving us something informative to read?

    Responder
  1950. SightCare reviews

    I and also my friends came taking note of the nice helpful hints located on your site then all of the sudden came up with a horrible feeling I never thanked the site owner for those tips. All of the ladies appeared to be so glad to read all of them and have now in fact been using those things. We appreciate you simply being well kind and then for deciding on variety of useful information millions of individuals are really desirous to discover. My honest apologies for not expressing appreciation to earlier.

    Responder
  1965. menophix

    Good day! This is my first visit to your blog! We are a team of volunteers and starting a new project in a community in the same niche. Your blog provided us valuable information to work on. You have done a wonderful job!

    Responder
  1966. Tonic Greens

    Today, I went to the beach with my children. I found a sea shell and gave it to my 4 year old daughter and said “You can hear the ocean if you put this to your ear.” She put the shell to her ear and screamed. There was a hermit crab inside and it pinched her ear. She never wants to go back! LoL I know this is completely off topic but I had to tell someone!

    Responder
  1968. Buddy Westling

    I do love the manner in which you have framed this particular situation plus it does indeed supply us a lot of fodder for consideration. Nevertheless, coming from what I have seen, I just simply trust as other remarks pile on that individuals keep on issue and not get started on a tirade regarding some other news of the day. All the same, thank you for this superb piece and although I do not really agree with it in totality, I value your standpoint.

    Responder
  1970. white hat hackers for hire

    That is the precise weblog for anybody who wants to find out about this topic. You realize so much its nearly laborious to argue with you (not that I truly would need…HaHa). You undoubtedly put a brand new spin on a subject thats been written about for years. Great stuff, simply nice!

    Responder
  1972. Kerassentials

    I loved as much as you’ll receive carried out right here. The sketch is tasteful, your authored material stylish. nonetheless, you command get got an nervousness over that you wish be delivering the following. unwell unquestionably come further formerly again as exactly the same nearly very often inside case you shield this hike.

    Responder
  1975. Fitspresso

    I like the valuable info you provide in your articles. I’ll bookmark your blog and check again here frequently. I’m quite certain I will learn a lot of new stuff right here! Good luck for the next!

    Responder
  1980. Sugar Defender

    I’m curious to find out what blog platform you are using? I’m experiencing some small security issues with my latest site and I would like to find something more safe. Do you have any recommendations?

    Responder
  1983. Sugar Defender

    Great weblog right here! Additionally your website rather a lot up very fast! What host are you using? Can I get your associate hyperlink to your host? I desire my website loaded up as quickly as yours lol

    Responder

Deixe um comentário

O seu endereço de e-mail não será publicado. Campos obrigatórios são marcados com *