---
product_id: 383400968
title: "Teravan Somnus I Blue and Green Wavelength Blocking OTG Fitover Glasses, Premium Nylon Lenses, Strong Polycarbonate Frame - Reduce Eyestrain and Improve Sleep Quality"
brand: "teravan"
price: "฿4314"
currency: THB
in_stock: true
reviews_count: 8
category: "Teravan"
url: https://www.desertcart.co.th/products/383400968-teravan-somnus-i-blue-and-green-wavelength-blocking-otg-fitover
store_origin: TH
region: Thailand
---

# OTG fitover design for glasses wearers 25%+ light transmittance for clear visibility Blocks ~100% blue & green light <550nm Teravan Somnus I Blue and Green Wavelength Blocking OTG Fitover Glasses, Premium Nylon Lenses, Strong Polycarbonate Frame - Reduce Eyestrain and Improve Sleep Quality

**Brand:** teravan
**Price:** ฿4314
**Availability:** ✅ In Stock

## Summary

> 😴 Sleep smarter, see clearer, live brighter with Teravan Somnus I!

## Quick Answers

- **What is this?** Teravan Somnus I Blue and Green Wavelength Blocking OTG Fitover Glasses, Premium Nylon Lenses, Strong Polycarbonate Frame - Reduce Eyestrain and Improve Sleep Quality by teravan
- **How much does it cost?** ฿4314 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.co.th](https://www.desertcart.co.th/products/383400968-teravan-somnus-i-blue-and-green-wavelength-blocking-otg-fitover)

## Best For

- teravan enthusiasts

## Why This Product

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

## Key Features

- • **Crystal Clear Vision:** Premium nylon lenses with 25%+ light transmittance let you see clearly without the dark tint of typical blue blockers.
- • **Wrap-Around Protection:** 360° coverage blocks harmful light from top, bottom, and sides—perfect for late-night screen warriors.
- • **Seamless Over-Glasses Fit:** Designed to comfortably fit over your prescription glasses, ensuring full coverage without compromising style or comfort.
- • **Durable & Lightweight Build:** Strong polycarbonate frame paired with scratch-resistant nylon lenses for all-day comfort and long-lasting use.
- • **Ultimate Blue & Green Light Defense:** Blocks nearly 100% of disruptive wavelengths below 550nm to protect your sleep cycle and reduce eyestrain.

## Overview

Teravan Somnus I OTG Fitover Glasses feature premium nylon lenses and a durable polycarbonate frame that block nearly 100% of blue and green wavelengths below 550nm. Designed for both men and women, these glasses fit comfortably over regular eyewear, providing wrap-around protection that reduces eyestrain and improves sleep quality without sacrificing visibility. Ideal for professionals seeking effective, stylish eye protection during late-night screen time.

## Description

desertcart.com: Teravan Somnus I Blue and Green Wavelength Blocking OTG Fitover Glasses, Premium Nylon Lenses, Strong Polycarbonate Frame - Reduce Eyestrain and Improve Sleep Quality : Health & Household

Review: Excellent shades for good sleep hygiene - These are perfect as they block both blue and green light that suppress melatonin and disrupt sleep. Just what I needed to watch late night tv.
Review: unlike many others which falsely claim to block most blue light, these do the job well. - Ordered in evening, arrived early the following morning, cudos to desertcart shipping service. These were ordered after I returned the earlier ones I ordered. I could clearly see blue color through the earlier amber tinted glasses, so the claim of 99% blocking was completely bogus. Glasses that block blue light will render all otherwise blue objects various shades of gray or black, no sensation of blue will occur to the person wearing the glasses. These glasses block blues and greens completely as stated. If you want to block light that interferes with sleep, these are an effective way to do that. Their transparency to other wavelengths of light is very high, so even though they block the blues and greens, they are not too dark to allow comfortable functioning in the evening. These glasses work, and are highly recommended.

## Features

- Teravan Somnus I glasses block close to 100% of both blue and green wavelengths, improving your sleep patterns and reducing eyestrain. Teravan Somnus I glasses block all wavelengths below 550 nm, which includes blue, green and violet.
- Unique lens technology provides over 25% light transmittance for better visibility, making these glasses more effective than regular blue light blocking glasses.
- Conveniently reduce your blue light exposure from devices like computers, phones, laptops, and TVs at night, preventing headaches, eyestrain and eye fatigue.
- Comfortably designed for both men and women, these glasses can be worn over regular-sized glasses or on their own, providing enhanced eye coverage. It has extra width for increased comfort.
- Wrap around fit for coverage from top, bottom, and sidelight blocking. Even without a tight fit the lenses will block a substantial amount of the target wavelengths from reaching the eyes
- Made with quality nylon lenses and a flexible polycarbonate frame, these glasses offer durability and comfort for long-term use. Naturally scratch resistant. Not for use when driving.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B094FCT4MH |
| Age Range Description | Adult |
| Apparel Fabric Stretch | No Stretch |
| Apparel Fabric Weight Class | Lightweight |
| Best Sellers Rank | #215,969 in Health & Household ( See Top 100 in Health & Household ) #896 in Computer Blue Light Blocking Glasses |
| Brand | Teravan |
| Care instructions | Clean with a soft, dry cloth. Avoid using harsh chemicals or cleaning solutions. |
| Color | Black |
| Customer Reviews | 4.2 out of 5 stars 109 Reviews |
| Fit Type | Over-the-Glasses |
| Fit to Size Sentiment | Positive |
| Frame Material Type | Polycarbonate |
| Item Shape | Rectangular |
| Item Weight | 132 Grams |
| Lens Coating Description | Scratch Resistant Coating |
| Lens Color | Blue, Green |
| Lens Material Type | Nylon |
| Lens Type | OTG Fitover |
| Manufacturer | Teravan |
| Material | Polycarbonate, Nylon |
| Origin | Imported |
| Pattern | Solid |
| Polarization Type | Non-Polarized |
| Product Care Instructions | Clean with a soft, dry cloth. Avoid using harsh chemicals or cleaning solutions. |
| Style Name | Protection |
| Sunglasses Form | fit_over |
| UPC | 628504223109 |
| Ultraviolet Light Protection | true |
| Unit Count | 1 Count |

## Images

![Teravan Somnus I Blue and Green Wavelength Blocking OTG Fitover Glasses, Premium Nylon Lenses, Strong Polycarbonate Frame - Reduce Eyestrain and Improve Sleep Quality - Image 1](https://m.media-amazon.com/images/I/41y9wG2ERLL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Excellent shades for good sleep hygiene
*by D***G on February 9, 2026*

These are perfect as they block both blue and green light that suppress melatonin and disrupt sleep. Just what I needed to watch late night tv.

### ⭐⭐⭐⭐⭐ unlike many others which falsely claim to block most blue light, these do the job well.
*by A***. on April 20, 2025*

Ordered in evening, arrived early the following morning, cudos to Amazon shipping service. These were ordered after I returned the earlier ones I ordered. I could clearly see blue color through the earlier amber tinted glasses, so the claim of 99% blocking was completely bogus. Glasses that block blue light will render all otherwise blue objects various shades of gray or black, no sensation of blue will occur to the person wearing the glasses. These glasses block blues and greens completely as stated. If you want to block light that interferes with sleep, these are an effective way to do that. Their transparency to other wavelengths of light is very high, so even though they block the blues and greens, they are not too dark to allow comfortable functioning in the evening. These glasses work, and are highly recommended.

### ⭐⭐⭐⭐ It is rare to block such a wide spectrum of sleep-disruptive light. A bit heavy though.
*by D***S on May 10, 2022*

It is rare and usually a lot pricier to block such a wide spectrum of sleep-disruptive light. So I found that impressive and bought two pairs. I also really like the shape of the fit-overs; they’re much more attractive than the abundant square ones. A few things to bear in mind: *The small lens built into the sides is not red but an extremely pale grey. This is suitable because the light that enters your eye frontally is what really matters. Generally side-glare, even if there is a lot of light, will not be sufficient to reflect into the eyes in a way that will disrupt hormones. The little grey windows allow a bit more light in for reading while still toning it down slightly to ensure you don’t get that reflection. *The glasses should be lighter weight and/or have a nice cushion. If you combine them with readers or prescription glasses, it’s going to get heavy after a while. Also, I feel like the weight loosened the hinge on my readers in the first night(!). Although glasses that only block blue light are of minimal effect for me, I do find myself rotating those ones in and out with these to give my nose a break, which is tremendous a shame. *Compared to some fit-overs their construction is not too overly wide and so is more suitable for a woman’s face. And even without my readers on, the design holds onto me far better than I anticipated. *Be sure that the glasses you wear underneath are clear without any computer-coating or light-blocking, or you may strain your eyes because of the dimness. * The biggest ongoing frustration with these glasses has to do with the lens material. It attracts grime and is nearly impossible to get completely clean, also the lenses readily pop out while cleaning. Both of these factors contrast unfavorably to my bon charge readers and to my regular readers, although I’d say that BluBlocker sunglasses also get very grimy and resist cleaning. *It was initially disconcerting that my blue light devices tended not to go neutral with these glasses on. Some looked as bright or brighter with the remaining light that came through as they did with glasses that just block blue light (Uvex Skyper or Swanwick). Other blue light devices looked purply-blue, whereas the blue light blockers left them greenish. I wondered if these lenses were merely dying everything red and not really blocking. But apart from the sellers reply to my question here on Amazon, I did several experiments: I have a blue led device that is quite bright and had it on in a closed cabinet in a closed room with no windows. Opening the cabinet multiple times with each pair of glasses on, it was clear that more total light was coming through with the glasses that block blue light only. Next I took a blue light detecting card and a blue light (such as come with some computer glasses to prove that they block some of the light), and I held the glasses right against the card with the light on top of the lens for ten seconds. The Uvex glasses left a purple mark briefly (indicating some light had gone through), but the Teravan did not. I also shone the blue light through each lens: It looked green and moderate on the Uvex and dim and orange on the Teravan. These experiments convinced me that the Teravan were in fact blocking more blue light, not less, and that the bluish and purplish lights are just a factor of what it looks like with less green and UV.

## Frequently Bought Together

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*Product available on Desertcart Thailand*
*Store origin: TH*
*Last updated: 2026-04-29*