Remove red-eye

Red eye occurs when the flash illuminates the inner part of the eyes and then it bounces on the retinae creating that red color (is by the blood vessels supplying the retina).
Generally happens when we use the flash even though they can also be caused by other light source directly intense eyes.
Obviously the effect it is worse in people with clear eyes who have dark eyes.
Modern digital cameras have Red-eye reduction to make blinking flash before firing, so the pupil shrinks and less light enters the eye, but this is not always achieved Remove red eyes, which is why we have no choice but that eliminate this effect manually with editing of images and retouching programs.
But we also have alternatives a lot more simple, as network iGone, an online application that is designed to do this, saving us much time to not have to install additional software or have knowledge about graphic design and photo retouching.
This application is really very easy to use and just have to upload the photo to the site, select the red eye and automatically removes the program. Then you just need to save the picture again in our computer.
Without a doubt an excellent alternative to programs like Photoshop or GIMP, that require previous knowledge and time in order to achieve this simple but effective retouching.
If you have doubts you can follow these tutorials to correct red eyes, first in Photoshop
Or gimp:
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And why not, some articles that can be useful if you are taking your first steps into the world of photo editing: