Infrared Technology Allows Us To See What Is Hidden From View
MSN: Photo essay: Invisible infrared surveillance technology and those caught in its digital cage Photo essay: Invisible infrared surveillance technology and those caught in its digital cage This test uses a dye that lights up when exposed to infrared light. The resulting images show retinal blood vessels and the deeper, harder-to-see blood vessels behind the retina in a tissue called the choroid. Ultrasound. This test uses high-frequency sound waves, called ultrasonography, to help view the retina and other structures in the eye.
Infrared Heating: What Is It? How Does It Work? Types, Uses, 49% OFF
