Brand Name: Welch Allyn, Inc. Product Name: Welch Allyn Spot Vision Screener VS100 Model/Catalog Number: VS100 Software Version: Software version 3.2.0.1 Product Description: Welch Allyn Spot Vision Screener VS100, FDA product code name: Refractometer, ophthalmic One unit per package

Reason: Display screen may unintentionally flicker due to a software issue. Exposure to flickering lights may induce photosensitive seizure activity in susceptible individuals.

Code information: Lot Code: " Product Code: HKO " Version or Model: 901029 " Catalog Number: VS100 " Company Name: WELCH ALLYN, INC. " Primary DI Number: 00732094214154 " Packaging DI Number: 00732094212228 " Device Description: VS100 UDI BASE UNIT " Software version: 3.2.0.1 " Serial Numbers: Refer to attached Affected Product Table

Distribution pattern: Worldwide - US Nationwide distribution in the states of AZ, CO, IL, IN, KS, MA, NE, NJ, NM, NY, PA, SC, TX, VA and the countries of Colombia and India.