Chongqing Yeasn Science & Technology Co., Ltd.

The company specializes in ophthalmic diagnostic devices, including manually-adjusted and automated lensmeters, phoropters (both manual and electric), automated ophthalmic refractometers, visual acuity projectors, ophthalmic examination slit lamps, and ophthalmodiastimeters. These devices are designed for clinical eye examinations, such as measuring refractive error, assessing visual acuity, and examining eye health.

The company is based in the United States. This location allows it to operate within the regulatory framework of the FDA, which governs the classification and listing of its devices.

The company’s devices are listed in the FDA’s Unique Device Identifier (UDI) database. This registry ensures traceability and transparency for healthcare providers and regulators, particularly for devices classified under FDA guidelines.

The company’s devices fall into two primary FDA classification categories: Class I and Class II. Class I devices generally pose minimal risk and require less regulatory oversight, while Class II devices involve moderate risk and may require special controls to ensure safety and effectiveness. The classification depends on the specific device type and its intended use.

These devices are used in clinical settings to perform essential eye examinations, such as measuring refractive errors (e.g., with lensmeters and refractometers), assessing visual acuity (e.g., with projectors), and examining eye structures (e.g., with slit lamps). Their design supports accurate diagnostics for conditions like myopia, hyperopia, or other vision-related issues.