SW-800 Portable, Hand Held Auto Refractometer provides Accurate and complete refractive information while screening
for common vision problems including: Myopia, Hyperopia, Astigmatism, Anisometropia, and measuring Pupil Size & PD.
It's Advanced Optical System needs only 1 Second to screen both eyes, and directly delivers the Test Report Results.
SW-800 is Small and Lightweight, easy to carry and suitable for any Indoors & Outdoors Vision Acuity screening session

See the features : https://drive.google.com/file/d/1A5xH1qgL8usm3Pxh-1t5ihKgfsC7kkfi/view?usp=sharing