Cataract is the leading cause of blindness worldwide, affecting nearly 100 million people. It occurs when the lens inside the eye becomes cloudy, leading to vision loss and, if untreated, blindness. The condition is most prevalent in remote and rural areas, where access to ophthalmologists—eye specialists—is extremely limited. To address this issue, Dr. Prabhu Krishna Ravilla, a physician at the Aravind Eye Hospital in Madurai, India, presented a new device at the European Society of Cataract and Refractive Surgeons (ESCRS) congress in London on September 13. The device is small, fitting in the palm of a hand, and connects to an Android smartphone. It includes a magnifying lens to view the front of the eye, two white LEDs powered by the phone, and a silicone tip that is placed on the eye socket to block out ambient light and maintain a consistent distance for accurate imaging. The device, developed in India, costs less than 150 pounds (about 175 euros), including the smartphone. A custom mobile application is used to manage telemedicine, allowing remote consultations. In a recent field test, community health workers were trained for just three hours to use the device. They examined 1,093 patients across 19 rural health camps in Puducherry and Tamil Nadu. Images of the patients' eyes were sent to a remote ophthalmologist, whose assessments were compared with those of a doctor present on-site. The two specialists reached the same diagnosis in 96 out of 100 cases, with 89% agreement in detecting cataracts and up to 96% agreement in identifying more advanced, mature forms of the condition. Each eye examination took less than two minutes and thirty seconds, making the process highly efficient. Currently, reaching isolated rural communities often depends on "ophthalmology camps"—temporary clinics where specialists travel from urban centers. These camps are costly and logistically challenging, typically reaching only a small fraction of the rural population. A previous study by the Aravind Eye Hospital found that only 7% of rural residents were diagnosed through such camps, with attendance dropping by 80% beyond three kilometers from the nearest clinic. The new device allows ophthalmologists to remain at the hospital, focusing on diagnosis while trained field agents visit homes in remote areas, improving access and efficiency. The president of the ESCRS, Professor Burkhard Dick, praised the innovation as a promising solution for underserved regions but emphasized that it does not replace a full ophthalmological examination. Researchers are already exploring the use of artificial intelligence to automate the initial screening process, potentially allowing the device to identify cataracts independently in the future. For millions of people living far from medical specialists, a low-cost Android smartphone equipped with this device could serve as a crucial first step in accessing life-changing eye surgery.