---
product_id: 637859920
title: "Fit Over 99.9% Blue Light Blocking Glasses for Sleep - Amber Nighttime Eyewear - Turn your Prescription & Reading Glasses Into World-Class Blue Blockers"
brand: "spectra479"
price: "€ 95.45"
currency: EUR
in_stock: false
reviews_count: 6
url: https://www.desertcart.ie/products/637859920-fit-over-99-9-blue-light-blocking-glasses-for-sleep
store_origin: IE
region: Ireland
---

# Amber lenses for night use Blocks 99.9% blue light 450-510nm Fits over prescription glasses Fit Over 99.9% Blue Light Blocking Glasses for Sleep - Amber Nighttime Eyewear - Turn your Prescription & Reading Glasses Into World-Class Blue Blockers

**Brand:** spectra479
**Price:** € 95.45
**Availability:** ❌ Out of Stock

## Summary

> 🌙 Sleep smarter, not harder—block blue light like a boss!

## Quick Answers

- **What is this?** Fit Over 99.9% Blue Light Blocking Glasses for Sleep - Amber Nighttime Eyewear - Turn your Prescription & Reading Glasses Into World-Class Blue Blockers by spectra479
- **How much does it cost?** € 95.45 with free shipping
- **Is it available?** Currently out of stock
- **Where can I buy it?** [www.desertcart.ie](https://www.desertcart.ie/products/637859920-fit-over-99-9-blue-light-blocking-glasses-for-sleep)

## Best For

- spectra479 enthusiasts

## Why This Product

- Trusted spectra479 brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Elite Blue Light Defense:** Blocks 99.9% of disruptive blue light in the critical 450-510nm range to protect your circadian rhythm.
- • **Portable Virtual Darkness:** Create your personal bubble of blue light-free calm wherever you go—perfect for late-night screen time.
- • **Universal Fit-Over Design:** Seamlessly slips over your prescription or reading glasses—no compromises on style or vision.
- • **Crystal Clear Amber Lenses:** Bright, non-polarized lenses maintain natural color perception and eye contact—wear them anywhere, anytime.
- • **Nighttime Performance Boost:** Join top entrepreneurs who use these glasses to hack their sleep and maximize next-day productivity.

## Overview

Fit Over 99.9% Blue Light Blocking Glasses feature amber Spectra479 lenses that fit over prescription eyewear or stand alone, blocking 99.9% of blue light in the 450-510nm range—the most disruptive wavelength for sleep. Designed for nighttime screen use, these bright, clear lenses reduce circadian disruption without dark tinting, helping high performers improve sleep quality and maintain eye comfort during late hours.

## Description

The Secret “Sleep Hack” of High Performers It's amazing how many top level entrepreneurs and “A” listers use blue blocking glasses at night. Up until recently, it has been a closely guarded performance secret. But how do they work? Blue Light at Night Blue light exposure at night has been proven time and time again to be disastrous to your body’s internal clockwork. Your body tracks the time of day with special receptors in the eye that sense light levels. They are extremely sensitive to blue light. This is a problem because any blue light exposure after dark creates conflicting signals. Your biorhythms can become fragmented and distorted. Not Good…, The Disruption Zone While the body is sensitive to higher levels of all visible light, the range of 450 - 510nm is by FAR the most disruptive. BioRhythm Safe: The New Orange Standard Most blue blocking glasses are not suitable for nighttime eyewear. The claim of blocking 99.9% blue light is meaningless if the full Disruption Zone is not included. Our glasses are specifically designed to block light in this range. By establishing these parameters we are setting a new standard that we hope other manufactures will follow.,/br> Virtual Darkness By blocking 99.8% of light in the Disruption Zone, we are creating a personal bubble of “virtual darkness”. Safely use computers, tablets, and phones Protects against the strong blue emissions from LED and florescent lights. Allows your body to shift effortlessly into nighttime physiology Allows for rapid sleep onset and deep natural sleep cycles Virtual personal darkness can be taken with you anywhere you go! 100% Satisfaction Guaranty Join thousands of other high performers using nighttime eyewear. Risk free!

Review: Not suitable for sleep hygiene despite marketing claims — overpriced (seeking refund) - These glasses are marketed as blocking 99.9%+ of blue light across 450–510 nm and as suitable for sleep and circadian protection. I tested them using controlled colour screens at full brightness with all software blue-light filters disabled, including pure blue, cyan, violet, green, and white. Observed results: Pure blue (~450 nm) is dimmed but still visible, not eliminated. Cyan (~480–500 nm) shifts toward green/yellow rather than being blocked. Green (~530 nm) remains largely unaffected. A white screen appears light yellow, not deep orange or red. This indicates moderate blue-light attenuation (~450–470 nm), not full suppression through 510 nm as advertised. Conclusion: These glasses function as general evening / screen-use blue-light reducers, not as true sleep-grade or circadian-protective glasses. They do not provide sufficient spectral blocking to reliably protect melatonin or sleep physiology. Price and value: Price paid: £54.90 Based on measured performance, a fair price would be £30–£45. At £54.90, they are overpriced for what they actually deliver. Anyone buying these specifically for sleep hygiene or “virtual darkness” should look elsewhere. Stronger lenses with deeper spectral cut-offs are required for that use case.
Review: Glasses are solid, well packaged, will buy more of these

## Features

- FIT OVER - Theses glasses fit over top of prescription and reading glasses. They can also be worn on their own.
- SUPERIOR BLUE BLOCKING - The best selling Spectra479 amber lenses can now turn your prescription and reading glasses into anti blue light glasses for computer and nighttime tv use.
- BRIGHT & CLEAR LENSES - These are designed to pass as much non-blue light through as possible. There is no dark tint and they are not polarized. You can still make eye contact with loved ones and even forget you are wearing them. Key Product Features
- TECHNICAL SPECS - Tested to block 100% of light from 280 - 490nm (this includes UV). Blocks 99.9+% of light in the critical 450 - 510nm range. This is the most disruptive wavelength of light at night. It is also the same frequency of light that is blasted directly into your eyeballs from electronic devices! Always wear protection!

## Images

![Fit Over 99.9% Blue Light Blocking Glasses for Sleep - Amber Nighttime Eyewear - Turn your Prescription & Reading Glasses Into World-Class Blue Blockers - Image 1](https://m.media-amazon.com/images/I/61sfou+o0xS.jpg)
![Fit Over 99.9% Blue Light Blocking Glasses for Sleep - Amber Nighttime Eyewear - Turn your Prescription & Reading Glasses Into World-Class Blue Blockers - Image 2](https://m.media-amazon.com/images/I/61eqg7txhgL.jpg)
![Fit Over 99.9% Blue Light Blocking Glasses for Sleep - Amber Nighttime Eyewear - Turn your Prescription & Reading Glasses Into World-Class Blue Blockers - Image 3](https://m.media-amazon.com/images/I/61xKYp4HsNL.jpg)
![Fit Over 99.9% Blue Light Blocking Glasses for Sleep - Amber Nighttime Eyewear - Turn your Prescription & Reading Glasses Into World-Class Blue Blockers - Image 4](https://m.media-amazon.com/images/I/912nKgsQyGL.jpg)
![Fit Over 99.9% Blue Light Blocking Glasses for Sleep - Amber Nighttime Eyewear - Turn your Prescription & Reading Glasses Into World-Class Blue Blockers - Image 5](https://m.media-amazon.com/images/I/81zE9KQ4tCS.jpg)

## Customer Reviews

### ⭐⭐ Not suitable for sleep hygiene despite marketing claims — overpriced (seeking refund)
*by U***R on 26 January 2026*

These glasses are marketed as blocking 99.9%+ of blue light across 450–510 nm and as suitable for sleep and circadian protection. I tested them using controlled colour screens at full brightness with all software blue-light filters disabled, including pure blue, cyan, violet, green, and white. Observed results: Pure blue (~450 nm) is dimmed but still visible, not eliminated. Cyan (~480–500 nm) shifts toward green/yellow rather than being blocked. Green (~530 nm) remains largely unaffected. A white screen appears light yellow, not deep orange or red. This indicates moderate blue-light attenuation (~450–470 nm), not full suppression through 510 nm as advertised. Conclusion: These glasses function as general evening / screen-use blue-light reducers, not as true sleep-grade or circadian-protective glasses. They do not provide sufficient spectral blocking to reliably protect melatonin or sleep physiology. Price and value: Price paid: £54.90 Based on measured performance, a fair price would be £30–£45. At £54.90, they are overpriced for what they actually deliver. Anyone buying these specifically for sleep hygiene or “virtual darkness” should look elsewhere. Stronger lenses with deeper spectral cut-offs are required for that use case.

### ⭐⭐⭐⭐⭐ Review
*by R***G on 16 January 2024*

Glasses are solid, well packaged, will buy more of these

### ⭐⭐⭐⭐⭐ Review
*by M***C on 2 September 2025*

Great price to see if these fit into your health routine. Quality seems good and should last a while. Comfortable and fit over both of my glasses. The first night I used them I had 3 hours of REM sleep (double what I have normally). That has never happened in the 3+ years I've been tracking my sleep.

## Frequently Bought Together

- Spectra479 - Fit Over 99.9% Blue Light Blocking Glasses for Sleep - Amber Nighttime Eyewear - Turn your Prescription & Reading Glasses Into World-Class Blue Blockers
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*Product available on Desertcart Ireland*
*Store origin: IE*
*Last updated: 2026-02-17*