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Yellow eye in photo?

Karen Thirlaway , Feb 16, 2012; 02:52 a.m.

I have been using my iPhone to take photos which I think may have a problem with the type of flash is uses, but almost every photo I take of my son brings out a yellow glow in his eye, Iv not seen this in anyone else Iv taken photos of. On recommendation I took him for an eye test which was fine so was wondering what else could be causing this to happen? Could it be a fault with the camera, or can the flash do that to certain people? All my photos are being ruined, thanks for any help x

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John Hill , Feb 16, 2012; 03:10 a.m.

Karen, I hope someone comes up with a camera or flash problem.
You may want to get a second opinion from another doctor or double check with the doctor that you already saw, if it is not equipment related.
I did a quick google and found this.
One early warning sign of Coats’ disease is yellow-eye in flash photography. Just as the red-eye effect is caused by a reflection off blood vessels in the back of a normal eye, an eye affected by Coats’ will glow yellow in photographs as light reflects off cholesterol deposits. Children with yellow-eye in photographs are typically advised to immediately seek evaluation from an ophthalmologist, preferably a vitreo-retinal specialist. Coats’ disease itself is painless. Pain may occur if fluid is unable to drain from the eye properly, causing the internal pressure to swell, resulting in painful glaucoma. MORE- http://en.wikipedia.org/wiki/Coats%27_disease

Karen Thirlaway , Feb 16, 2012; 03:16 a.m.

Thanks Iv taken him to the optician and they said he looks fine but it's niggling away at me very time I see a new foto, I didn't know who else to ask so hoping someone here knows its a camera problem, I'd post a picture but not sure how to x

John Hill , Feb 16, 2012; 03:29 a.m.

An ophthalmologist is a specialist in medical and surgical eye problems. I don't want to worry you but you need to find out for sure. Would the optician be able to recognize this disease? That is why I suggested calling him asking him about it. I did not search much after I found that Wiki link but I could not find any other links about humans with yellow eyes from flash. There were some with animals and yellow eye. If it is Coats' then it could be serious. Make sure to read the link.
If you google Coats' disease and look at the images there are a few samples of young kids with the yellow eye and it is usually one eye. See link below.
(link)
Please read this- I Discovered My Son's Eye Disease in a Photo- http://www.momlogic.com/2010/02/my_kid_contracted_coats_disease.php

I certainly hope I am wrong and it is just equipment problems.

Karen Thirlaway , Feb 16, 2012; 03:35 a.m.

Thanks I will take him in to make sure x

John Hill , Feb 16, 2012; 03:44 a.m.

I'm still hoping that someone comes up with an equipment issue but you said this is not happening with anyone else you have taken photos of. Do a search for iPhone yellow eyes etc...
Have you taken flash photos of other people after your son started having the yellow eye pix? If not then you may want to test some people. But I would certainly call that optician regarding your concerns.

Karen Thirlaway , Feb 16, 2012; 03:52 a.m.

I found on google that the iPhone flash can cos white eyes instead of red and I Hav a couple pictures like that but what he is getting is different, could still be caused by the camera i think, but I will definitely get another opinion from the dr

John Hill , Feb 16, 2012; 04:05 a.m.

That one story ''I Discovered My Son's Eye Disease in a Photo,'' the doctor's office told the mom to bring her son in the next day concerned me.
Best to be safe. Good luck and my thoughts are with you both. Let us know how it works out.

Benoit Evans , Feb 16, 2012; 10:22 a.m.

Optician = specialist in making and fitting corrective lenses

Optometrist = specialist in measuring visual acuity and prescribing corrective lenses (which are then made by a dispensing optician)

Ophthalmologist = a medical doctor specializing in the diagnosis and treatment of eyes diseases and injuries

To the limited extent of their abilities, opticians and optometrists who suspect a problem requiring medical treatment have a duty to refer clients to an ophthalmologist for diagnosis and treatment.

Alan Marcus , Feb 16, 2012; 10:23 a.m.

Not to worry, the problem is; tiny cameras with flash. I am sure you have noticed that when driving at night, animal eyes caught in the headlights of your automobile, glow yellow. In addition, modern highway signs glow brightly when the headlights play on them. Both the eye and the glass bead that makeup the signs are super reflectors of light, under certain conditions.

When light enters a sphere, the light energy reverberates around inside the sphere and a high percentage exists. Now the exit path from the sphere is nearly identical to the entry path. Translated, this mean, in the car, you see glowing animal eyes because you are sitting very near an imaginary line, headlight-to-eye. Same with tiny cameras, the flash mounted close to the camera's lens and this positioning almost always yield a phenomenon called "redeye".

Both the animal eye and the human eye are made-up of transparent tissue. At the back of the eye is the retina with its light sensitive nerve cells. The retina is rich with blood and the retina contains pigments (dye) that enable color vision and increased sensitivity in dim light.

While redeye shows up red most of the time, it can be yellow depending on conditions. You might notice that professional photographers often use a hand-held flash, held at arm's length. The idea is to get as much separation between lens and flash as possible. Many cameras have tricks up their sleeve to minimize redeye. Some fire off a pre-flash just ahead of the main flash to cause the Iris of the subject's eyes to reduce in size, this minimizes redeye. Many cameras and viewing software feature a redeye fix. Software can seek out redeye and make adjustments to cause the eye to appear normal.


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