DR-1a: A Reference Tool for Non-Invasive Tear Film Analysis
The Kowa DR-1a is a diagnostic device specifically designed to examine the tear film and detect dysfunctions related to dry eye disease. Its principle is based on incident white light, which generates interference patterns through specular reflection between the surface and the back of the tear film’s lipid layer. This optical phenomenon, similar to the colorful patterns seen on a soap bubble, provides a highly detailed view of the tear film’s structure and stability.
Equipped with optics specially engineered to match the curvature of the cornea, the DR-1a enables precise observation over a wide area. It also provides live visualization of tear film breakup—an essential indicator in the diagnosis of dry eye syndrome. This observation is entirely non-contact, ensuring patient comfort and minimizing the risk of irritation or error associated with invasive procedures.
The device also allows for simple measurement of NIBUT (Non-Invasive Break-Up Time)—the time it takes for the tear film to break up after a blink. This parameter is crucial in assessing the quality of the eye’s protective lipid layer. With its intuitive user interface, the practitioner can easily perform measurements and transfer images or videos directly to a network folder, seamlessly integrating into the clinical workflow.
User comfort is enhanced by a large 7-inch LCD monitor and a wide range of three-dimensional adjustments. The patient’s headrest can be moved vertically, horizontally, and in depth for optimal positioning during the exam. Its compact design and lightweight structure make it easy to incorporate into any ophthalmology clinic or optometry practice.
The Kowa DR-1a is an essential device for analyzing tear film stability, combining optical precision, ease of use, and efficient data management. It stands out as a central tool for detecting and monitoring dry eye disease, particularly during routine check-ups or post-contact lens evaluations.
