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A new scanner will allow for a complete eye exam in less than a minute
Last reviewed: 01.07.2025
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Researchers from the Massachusetts Institute of Technology have invented a device that allows scanning the entire retina of the eye in just a few seconds and identifying existing diseases (even at an early stage), in particular glaucoma, diabetic retinopathy, and macular degeneration.
The new device is the first to combine virtually all modern technologies, including 3D imaging, mirror scanning, small micro-electro-mechanical systems, and devices that correct random patient movements or doctor hand tremors. The device emits infrared light onto the retina, which is then reflected back into the device. Interferometry is then turned on in the device, which evaluates changes in the volume of the returned light signal and changes in the time delay. The effect produced by the device is similar to that of radar or ultrasound.
Two types of the device were tested. One device resembles a miniature video camera with a display. During the study, the specialists came to the conclusion that the device they created allows obtaining images that are not inferior in quality to standard desktop devices used in ophthalmology practice. To stabilize the image, which is disturbed by the movements of the doctor or patient, the specialists programmed the device to make several 3D images at a fairly high speed and from different directions. Subsequently, all the obtained images are combined into one complete picture. Using several images from one part of the retina allows you to correct possible distortions due to the movements of the doctor's hands during the examination or in the patient's eye.
According to the researchers, the device will allow obtaining maximum data with the help of one such device, the study of which will take only one minute. Usually, in order to examine a patient, a doctor needs several instruments and devices. The specialists decided to develop a device that can be easily transported, so that it would be possible to conduct studies outside the walls of the doctor's office. The device uses special technology that has proven itself well in the ophthalmology market - optical coherence tomography.
Thermal imagers are now widely used in ophthalmological practice, and modern scanning devices are used in eye surgery. Researchers have been able to create a small device that can be easily carried using a special mirror scanning device and micro-electro-mechanical systems.
According to the author of the study, James Fujimoto, in the future he and his team have already planned to conduct clinical trials of the new device. James Fujimoto also noted that the device is quite expensive and, before introducing the device for mass use in medical practice, it is necessary to find a way to reduce its cost.
The group of scientists published all the results of their research in the specialized journal Biomedical Optics Express.
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