What Causes Red-Eye?
jQuery(document).ready(function(){ jQuery(‘#jsArticleStep1 span.image a:first’).attr(‘href’,’http://i.ehow.com/images/a04/ls/6f/what-causes-red-eye-photography-1.1-800X800.jpg’); }); The back of the retina is covered with blood vessels, which reflect the camera’s flash. Red-eye in photographs is caused by the reflection of the camera’s flash. Because the retina of the human eye is covered with tiny blood vessels, the reflection of the camera’s flash causes the eyes to appear red and glowing. Red-eye most often occurs in dark environments. Because the surroundings are dark, the pupil opens wider to allow more light in. As such, a larger amount of the retina is visible. Because a larger portion of the retina is showing, a larger number of blood vessels reflect the camera’s flash. In daylight, however, the pupils contract, less of the red retina is visible to reflect the camera’s flash, and red-eye is significantly reduced. How to Reduce Red-Eye jQuery(document).ready(function(){ jQuery(‘
