Cost can also be a barrier to treatment. Dr. Rengaraj Venkatesh is with the Aravand Eye Hospital in India.

"In India, when someone seeks health care, they don't come alone. They come with at least one family member. So the cost involved in getting to the hospital is also expensive," said Venkatesh.

But for those who can get treatment, glaucoma patient Mary Hyman says this:

"When you get your physical, get your eyes examined. Even though you might not think you have a problem. Get your eyes examined," she said.

Hyman is grateful that she is being treated for her glaucoma. Meanwhile, the World Health Organization says glaucoma is an emerging priority because the number of cases is expected to increase as more people the world over live longer.

peek-a-boo：捉迷藏

【Early detection and treatment a must for glaucoma patients(视频)】相关文章：

★ Camp in a California wilderness

★ Prayers Written At Vailima(1)

★ Forget and forgive

★ 自由飞翔

★ 精选英语美文阅读：刘半农《教我如何不想她？》

★ I am nature's greatest miracle

★ How to Beat the Procrastination Habit

★ 感恩生活

★ Prayers Written At Vailima(2)

★ 幸福在哪里