A MOTHER who posted a picture of her daughter on Facebook got more than just a few likes after users spotted something in the photo that helped identify a rare disease.

Tara Taylor from Tennessee took a snap of her three-year-old daughter Rylee and put it on the social network.

When two friends were randomly browsing through the site they saw the image in which Rylee’s left eye was glowing.

Most people would have assumed this was simply an effect of the camera’s flash and moved on, but luckily these eagle-eyed friends knew something was up and got in touch.

“They said: ‘Hey, I’m sure it’s nothing. It’s probably the lighting, but your daughter’s eye is glowing and you might want to have it checked out because it’s a sign there could be an issue with her eye’,” Mrs Taylor told Memphis news outlet WREG.

After taking her daughter to the doctor, Rylee was diagnosed with Coats’ disease — a rare condition that can cause blindness or loss of vision, but if caught early it can be prevented.

The struggle many doctors find is that children won’t say if they have trouble with one eye as it is usually only picked up when both are affected. Most of the time the condition is “caught out in an unexpected way” and in this case sharing turned into caring to help save a little girl’s vision.