Bengaluru techies K Chandrasekhar and Shyam Vasudev Rao quit their jobs to create 3nethra, a portable, noninvasive eye pre-screening device that can detect five major eye ailments: cataract, glaucoma, diabetic retina, cornea problems, and eye-lens refractive errors.

“We were overwhelmed by the problem of preventable blindness in India,” say the techies.

The device saves precious time for ophthalmologists.

It costs one-fifth the price of existing machines, and can be fitted into a suitcase and connected to a PC or laptop via USB.