Forus Health, Bangalore has developed a slick retinal imaging device called 3nethra which works as effectively as traditional fundus camera but at a fraction of the cost. It is useful for rural doctors while checking the eyes of diabetes-affected patients. It uses infrared light and so does not require eye dilatation by the use of eye drops. The 14-KG machine is auto-focus. The images are uploaded on company servers, and then accessed by the ophthalmological experts. It is a three-in-one device. Apart from retinal imaging, its refractive meter measures any loss in vision. Its slit lamp images the cornea. Its price is one-third of the fundus camera. As the cost difference is substantial, many more such devices can be deployed in rural areas. Traditional fundus cameras cost Rs 14 lac or more. 3nethra is priced at Rs 5 lac. It is a big success in India and abroad.

The device is a design innovation. It is a compact device. The company has started a cloud-based telemedicine service — identifying people with problems and send images to a specialist.