MOSISO 23-24 in Blue Light Blocking Screen Protector - Dual-Side Eye

In this review the MOSISO 23-24 in Computer Blue Light Blocking Screen Protector is evaluated for people who spend long hours at a 16:9 desktop monitor and need simple, reversible eye protection. The bottom line: it is a practical, low-profile filter that reduces harmful UV and a portion of high-energy blue light while also offering a matte anti-glare side and a smooth HD side for clarity. For anyone who wants an easy-to-install, thin acrylic shield that protects against scratches and dust while cutting eye strain, this protector earns consideration.

Key Features

• Fit and size: Designed for diagonally measured 23, 23.6, 23.8 and 24 in 16:9 monitors, the filter measures 21.26 x 13.39 in to match monitor width and height when measured before purchase.
• Blue light reduction: Filters anti-blue light in the 420nm to 460nm range and can reduce this high-energy visible light by about 45% to help reduce eye fatigue.
• UV protection: Cuts and curbs up to 99% of harmful UV to protect eyes from longer wavelength ultraviolet exposure near screens.
• Dual-surface design: One matte side reduces glare and reflections for bright rooms, while the smooth HD side preserves maximum resolution for detailed work.
• Thin acrylic construction: Made of acrylic at approximately 0.01 in thinness, it stays clear (about 95% transparency) and resists dust, fingerprints and scratches without significantly darkening the screen.
• Simple installation: Hangs on the monitor with two small top squares that can be removed and reattached to flip sides when needed.

Who It's For

This protector is best for office workers, programmers, gamers and home users who use a 23 to 24 in 16:9 desktop LCD or LED monitor and want a low-cost way to cut blue light exposure and glare. The dual-side option makes it useful for people who alternate between bright-room work (matte side) and detail-oriented tasks (HD side).

It is less suitable for users with curved screens, nonstandard bezels, or those who need certified medical-grade blue light protection; buyers should carefully measure the visible screen width and height before ordering to ensure a proper fit.

Pros & Cons

Pros

• Effective dual-side choice gives both anti-glare and high-definition viewing in one product.
• Reduces UV exposure and cuts a significant portion of HEV blue light to ease eye strain.
• Ultra-thin acrylic resists fingerprints, dust and scratches while retaining screen brightness.

Cons

• Requires exact measurement of screen width and height to ensure correct fit and is not for curved monitors.
• Blue light reduction is partial (about 45% in the 420-460nm band) rather than full-spectrum blocking.

Specifications

Compatible diagonal sizes	23, 23.6, 23.8, 24 in (16:9)
Dimension (L x W)	21.26 x 13.39 in
Material	Acrylic
Thickness	Approximately 0.01 in
Transparency	About 95% clear
Blue light reduction	Reduces 420-460nm HEV by ~45%
UV protection	Filters up to 99% harmful UV

Our Verdict

The MOSISO 23-24 in screen protector is a sensible, affordable option for users with standard 16:9 monitors who want to cut glare, reduce UV exposure and lower blue light impact without changing screen brightness. It delivers practical dual-surface flexibility and durable acrylic protection, but buyers must measure their screen and accept that blue light blocking is partial rather than total.

Frequently Asked Questions

Will this fit my 24 in monitor?
Measure the visible screen width and height to confirm the 21.26 x 13.39 in filter will cover your 24 in 16:9 monitor before purchasing.

Can I switch sides for matte or HD viewing?
Yes, the top mounting squares can be removed so you can flip the protector and reinstall it with either the matte or smooth HD side facing the screen.

Does it darken the screen?
The acrylic is about 95% transparent and ultra-thin, so it should not noticeably darken the original screen brightness.