why my eyes is red on pictures?

Answer 1

The light of the flash occurs too fast for the iris of the eye to close the pupil. Light is focused onto the blood-rich retina at the back of the eye and the image of the illuminated retina is transmitted to the camera resulting in the red appearance of the eye on the photo. This principle is used in fundoscopy (an eye examination used to examine the retina by using an opthalmoscope), wherein a positve ROR or Red reflex is a normal finding.

The effect is generally more pronounced in people with grey or blue eyes and in children. This is because pale irises have less melanin in them and so allow more light to pass through to the retina. Children, despite superficial appearances, do not have larger pupils but their pupils are more reactive to light and are able to open to the fullest extent in low light conditions.

In many species the tapetum lucidum, a light-reflecting layer behind the retina which improves night vision, intensifies this effect. This leads to variations in the colour of the reflected light from species to species. Cats, for example, display blue, yellow, pink, or green eyes in flash photographs.

Both sites below have info about preventing red-eye.

Answer 2

as the flash goes off on your camera the light enters your eye...but it is reflected back off your retina which is filled with blood....the camera picks up this reflection and gives you the red eye....red eye reduction works by causing your iris to close by exposing your eyes to light thus light does not enter your eye easily and is not reflected out...and thus no red eye in the pictures.

Answer 3

coz of red eye reduction is not there in ur camera...