Why is it that people get "red eye" in pictures, but dogs get "green eye"?

Jump to Last Post 1-5 of 5 discussions (9 posts)
  1. Mmargie1966 profile image92
    Mmargie1966posted 6 years ago

    Why is it that people get "red eye" in pictures, but dogs get "green eye"?


  2. Daughter Of Maat profile image95
    Daughter Of Maatposted 6 years ago

    Awe, what a cute picture!! What kind of dog is it? It looks just like my puppy!

    Both dogs and cats have this green reflection. In a human the "red eye" that you see is a reflection of the retina in the back of the eye, and is know to those of us in ophthalmology as a red reflex. It only occurs when the eye is dilated, which is why red eye reduction on a camera works. It's a flash setting that flickers and gives the eye about 3 seconds to constrict thereby hiding the retina and it's reflex prior to snapping the shot.

    In a dog (and cat), there is a layer behind the retina called the tapetum. This layer is reflective allowing the dog to see in lower light conditions much better than humans and is typically yellow, blue or green in color. When you take a picture of a dog, their eye is dilated as well, and the tapetum reflects back at you causing a green, sometimes bluish glow. A dog's iris doesn't constrict as quickly as a human's, so red eye reduction often doesn't work on animals.

    1. Mmargie1966 profile image92
      Mmargie1966posted 6 years agoin reply to this

      Wow!  Thank you so much for the answer!

      This dog is about a year or so old.  She is 1/2 pitbull, 1/4 shepherd an 1/4 lab.  She has the webbed paws of the lab (and is a great swimmer), the shepherd moles, and the pit body.

      She is the sweetest dog an

    2. wetnosedogs profile image60
      wetnosedogsposted 6 years agoin reply to this

      i don't know the answer, but looks like you got your answers. I just wanted to say that's an adorable dog.

    3. Daughter Of Maat profile image95
      Daughter Of Maatposted 6 years agoin reply to this

      Awe, that's what we think out dog is, they look almost identical! You're quite welcome for the info, I love eyes, and it doesn't matter who or what they belong too! lol Our dog, Sekhmet, has the same beautiful green glow in pictures. I love it!

  3. Nettlemere profile image93
    Nettlemereposted 6 years ago

    I agree with D of M it is the lack of tapetum in human eyes that causes them to be red rather then reflect the light back out. cats or dogs with blue eyes can have red eye and reflection from flash. There's a cool picture of a cat with one blue eye one not on the wikki page here showing the two different effects. http://en.wikipedia.org/wiki/Tapetum_lucidum

    1. Daughter Of Maat profile image95
      Daughter Of Maatposted 6 years agoin reply to this

      Interestingly, the one cat with two different reflexes; the reflex of cats is based on coat color. Those with light coats (and eyes) have less or no tapetum, hence no green glow in the one eye. I have 2 white cats with blue irises & no green glow

  4. libby1970 profile image67
    libby1970posted 6 years ago

    Beautiful dog! Someone else has already answered your question so I just wanted to so my dog is a full boxer and your dog looks a lot like him. One thing different is my dog has the jaws that droop...and my dog is bigger but other than that he looks like his twin!!!

  5. DeanCash profile image60
    DeanCashposted 6 years ago

    This is because the light of the flash is reflecting from the retina, which is covered with tiny blood vessels. The more open the pupils are, the more red eye effect you get in your photos. Animals have a reflective layer in the back of their eyes behind the retina called the tapetum. This layer enhances their night vision. The colour of the tapetum gives you blue, green, yellow, or white eye effect. With animals, the effect can have place even when the ambient light is sufficient to prevent it in humans. The color of the eyes in the picture also depends on the angle at which you take a photo. Taking pictures of the same animal from different positions of your camera may produce different results: Yellow or green eyes are ok in pets photos, but if you see this in photos of humans, it may indicate a serious problem.


This website uses cookies

As a user in the EEA, your approval is needed on a few things. To provide a better website experience, hubpages.com uses cookies (and other similar technologies) and may collect, process, and share personal data. Please choose which areas of our service you consent to our doing so.

For more information on managing or withdrawing consents and how we handle data, visit our Privacy Policy at: https://hubpages.com/privacy-policy#gdpr

Show Details
HubPages Device IDThis is used to identify particular browsers or devices when the access the service, and is used for security reasons.
LoginThis is necessary to sign in to the HubPages Service.
Google RecaptchaThis is used to prevent bots and spam. (Privacy Policy)
AkismetThis is used to detect comment spam. (Privacy Policy)
HubPages Google AnalyticsThis is used to provide data on traffic to our website, all personally identifyable data is anonymized. (Privacy Policy)
HubPages Traffic PixelThis is used to collect data on traffic to articles and other pages on our site. Unless you are signed in to a HubPages account, all personally identifiable information is anonymized.
Amazon Web ServicesThis is a cloud services platform that we used to host our service. (Privacy Policy)
CloudflareThis is a cloud CDN service that we use to efficiently deliver files required for our service to operate such as javascript, cascading style sheets, images, and videos. (Privacy Policy)
Google Hosted LibrariesJavascript software libraries such as jQuery are loaded at endpoints on the googleapis.com or gstatic.com domains, for performance and efficiency reasons. (Privacy Policy)
Google Custom SearchThis is feature allows you to search the site. (Privacy Policy)
Google MapsSome articles have Google Maps embedded in them. (Privacy Policy)
Google ChartsThis is used to display charts and graphs on articles and the author center. (Privacy Policy)
Google AdSense Host APIThis service allows you to sign up for or associate a Google AdSense account with HubPages, so that you can earn money from ads on your articles. No data is shared unless you engage with this feature. (Privacy Policy)
Google YouTubeSome articles have YouTube videos embedded in them. (Privacy Policy)
VimeoSome articles have Vimeo videos embedded in them. (Privacy Policy)
PaypalThis is used for a registered author who enrolls in the HubPages Earnings program and requests to be paid via PayPal. No data is shared with Paypal unless you engage with this feature. (Privacy Policy)
Facebook LoginYou can use this to streamline signing up for, or signing in to your Hubpages account. No data is shared with Facebook unless you engage with this feature. (Privacy Policy)
MavenThis supports the Maven widget and search functionality. (Privacy Policy)
Google AdSenseThis is an ad network. (Privacy Policy)
Google DoubleClickGoogle provides ad serving technology and runs an ad network. (Privacy Policy)
Index ExchangeThis is an ad network. (Privacy Policy)
SovrnThis is an ad network. (Privacy Policy)
Facebook AdsThis is an ad network. (Privacy Policy)
Amazon Unified Ad MarketplaceThis is an ad network. (Privacy Policy)
AppNexusThis is an ad network. (Privacy Policy)
OpenxThis is an ad network. (Privacy Policy)
Rubicon ProjectThis is an ad network. (Privacy Policy)
TripleLiftThis is an ad network. (Privacy Policy)
Say MediaWe partner with Say Media to deliver ad campaigns on our sites. (Privacy Policy)
Remarketing PixelsWe may use remarketing pixels from advertising networks such as Google AdWords, Bing Ads, and Facebook in order to advertise the HubPages Service to people that have visited our sites.
Conversion Tracking PixelsWe may use conversion tracking pixels from advertising networks such as Google AdWords, Bing Ads, and Facebook in order to identify when an advertisement has successfully resulted in the desired action, such as signing up for the HubPages Service or publishing an article on the HubPages Service.
Author Google AnalyticsThis is used to provide traffic data and reports to the authors of articles on the HubPages Service. (Privacy Policy)
ComscoreComScore is a media measurement and analytics company providing marketing data and analytics to enterprises, media and advertising agencies, and publishers. Non-consent will result in ComScore only processing obfuscated personal data. (Privacy Policy)
Amazon Tracking PixelSome articles display amazon products as part of the Amazon Affiliate program, this pixel provides traffic statistics for those products (Privacy Policy)