Preventing blindness is going mobile with a phone app built for your eyes.

When the day came for Dr. Hillary Rono to test new technology to help blind people see again, he was super stoked.

A revolution!

He only needed his cellphone to do it.

And let's be real, we all know he was going to bring that with him anyway.

He was finally getting to put PEEK — the Portable Eye Examination Kit — to the test. It's a genius idea Rono, Dr. Andrew Bastawrous, and many others worked hard to develop.

It's a smartphone technology to make eye exams easier, more affordable, and more accessible from anywhere in the world. There are no fancy machines or expensive gear involved. Instead, it's all done through your phone.

Rono had every right to be excited. Especially because it worked.

“I thought we'd probably find 4 or 5 people with eye problems," he said. "But to my surprise, we've seen 50 to 100, and all have eye problems."

That was just in one trip to the village.

Rono used the PEEK adapter over the built-in camera on his phone to see high quality images of the eye. Then he was able to determine the overall health of the eye and what steps needed to be taken next for treatment.

The app can help detect cataracts, glaucoma, diabetes, and even signs of malaria.

And it's catching on. In Kenya, where there are only two eye doctors for every one million people, Rono can breathe a sigh of relief knowing that he can reach more people than ever before.

"When I began in the hospital, I was alone with one nurse. We were seeing 15 people in outpatients every day, and that year we operated on only 98," he said in a feature by Duck Rabbit.

"At the moment we are seeing now 20,000 people treated for avoidable blindness and operating on 2,000 a year."

20,000?!! Bam. That's progress. People who live in remote areas and normally go without health care are starting to be able to access services a lot easier.

And considering that 80% of blindness in the world is preventable and curable, technology like PEEK has the potential to change eyesight as we know it.

It's not meant to replace other eye equipment but rather allow it to happen in areas that never used to have it. And it doesn't take a highly skilled person to use it either. You just snap the photos and send them through your phone to a trained professional.

You'll probably be hearing about PEEK more because it's planned to be released more widely in early 2016. Until then, see more about the incredible impact it's made so far in testing:

If you like what PEEK Vision is up to, give them a shoutout on their Facebook page.