ArtsAutosBooksBusinessEducationEntertainmentFamilyFashionFoodGamesGenderHealthHolidaysHomeHubPagesPersonal FinancePetsPoliticsReligionSportsTechnologyTravel

What Does The Eye Really See?

Updated on April 30, 2013
What does the human eye really see?
What does the human eye really see?

The Human Eye Is Amazing

There is no denying the fact that the human eye is an amazing organ. Without question, they are the most sensitive and delicate organ we have, and perhaps the most misunderstood.

They are the 'window to our soul', our window in which we view the world, and are responsible for a majority of all the information that our brain receives.

Of our five senses, touch-taste-smell-sight-hear, eyesight is relied on more than any other.

Interestingly, our eyes are the same size from birth despite the fact that they can change color. Our nose and ears continue to grow as we do.

With over 2 million working parts, the human eye is incredibly complex.

How does the human eye work and does the eye really see?

The Human Eye Structure And Function

Our eyes are a complex organ. Did you know that the 'things' we see are actually made from reflected light; light that is reflected off images and objects that we view?

The human eye is made up of many components; the cornea and retina are most commonly known but in many cases not completely understood. We do know that the cornea is curved and when light enters our eyes through the cornea, light actually bends. As a result the image we 'see' is flipped upside down and lands this way on our retina.

The retina has a very small surface area and is made up of many cells; namely cones and rods. There are actually three different cones (cells) which each help us to see during the day by reacting to red, green and blue lightwaves. Thanks to cones, we are able to 'see' images in color. The other component of the retina are rods. These assist with our night vision only because they recognise light but not color.

Cleverly designed signals send these images to our brain and our brain then turns the image around so it is the right way up again.

Does the eye see color?
Does the eye see color?

Eyes - do they really 'see'?

Our eyes do not see anything.

Just about this for a moment. Our eyes do not actually send 'images' to our brain. Images are constructed in our brain are based information received, based on light signals. We rely on the nerve signals from our eyes to recognise shapes and motion.

'Seeing' is a very complex brain function and therefore a huge percentage of our brain's resources are busy doing nothing other than recognising what is around us.

Research has shown that we dont 'see' colour in the world but our brains have evolved to turn light waves into colors.

Could this be why most animal species are colour blind.

Color only exists because we make it.

How the eye works

Seeing is really only pattern recognition. Our brain forms images based on pattern recognition.

Images aren't seen either. Our brain interprets light signals and attempts to recognise to what the lines and motions might represent, then they cleverly allow us to perceive whatever that object might be.

Bit confusing?

Pattern recognition is learned as we grow. When we are babies, nothing makes sense to us and then as we grow and our knowledge increases, we learn about the world around us and we begin to make sense of it all. As adults, we rarely have instances where we can't recognise something. Just about all of the computations between light signals and what that object actually is have been learnt.

Consider that for a moment.

Eyes

So if it is our brain that actually 'sees', the question is, what is really out there?

If this 'reality' is only a frequency from which the mind builds these images of objects then how do we really know what is real and what is not?

Our perception of the world is the brain’s best guess at what is actually happening, based on the information it receives through the five senses and what we have been taught.

As an example, optical illusions demonstrate that the brain does not always interpret information correctly.

The mystery of the human eye deepens.


All Hubs are Original Material by 'Work At Home Mums' ©


Comments

    0 of 8192 characters used
    Post Comment

    No comments yet.

    working

    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
    Necessary
    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)
    Features
    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)
    Marketing
    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.
    Statistics
    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)