Can certain medications affect pupil dilation and thus red-eye

When the other eye was evaluated in this way, no red color was seen. photo by Janelle Aby, MD. Gonococcal Conjunctivitis. When ... The "red eye" mode of cameras involves a pre-flash before the main flash so that pupils become smaller before the real picture is taken and red eyes are ... What causes 'red eye' in photos? The red eye effect occurs when pictures are taken using a flash, and occurs especially when the flash is located near the ... Jun 10, 2021 ... The red eye you see in pictures is caused by light reflecting off of the retina, either caused by the camera's flash or some other bright light. Red eye in photos occurs when a camera flash reflects off the retina, which is rich in blood vessels. It typically happens in low light conditions. The “red eye” mode of cameras involves a pre-flash before the main flash so that pupils become smaller before the real picture is taken and red eyes are ... Apr 1, 2024 ... Close-up of a man's red bloodshot eyes. hadkhanong_Thailand/iStock via Getty Images. A red eye might look scary and cause discomfort. But the ... Jul 20, 2015 ... Choroid contains a rich amount of blood, so in a dark room, the light from the camera flash reflects off the red blood vessels of the choroid ... Dec 21, 2016 ... Red eye occurs when the light from an electronic flash strikes the retina and reflects back to the camera lens. Apr 29, 2021 ... The red eye effect on photos occurs when a camera light flashes or any other external factor of bright light is reflected to the camera. This ...