Amazon.com: VizoBlueX 23-24 inch Anti-Blue Light Filter for Computer Monitor. Blue Light Monitor Screen Protector Panel (21.5 x 13.0 inch). Blocks Blue Light 380 to 495 nm. Fits LCD, TV and PC,
Kensington FP238W9 Privacy Screen Filter for 23.8" Widescreen Monitors (16:9) | Dell USA
Amazon.com: Anti Blue Light Screen Filter for 27 Inches Widescreen Desktop Monitor (Does NOT fit 27" iMac), Blocks Excessive Harmful Blue Light, Reduce Eye Fatigue and Eye Strain : Electronics
ViewSonic VG2448-PF, 24" IPS Full HD Monitor with Built-In Privacy Filter