Question 1

What does without strength mean?

Accepted Answer

Hi Brie,

Thank you for your question. “+0.00 (Without Strength)” means that the lenses are made without magnification/ diopter strength.

With this variation you will get the premium Japanese CR39 lenses filtering out 99,5% off all blue light without the extra magnification some of our customers prefer. 
The lenses will support your eyes preventing eye strain when using your computer or other digital devices late at night, with improved sleep hormone (Melatonin) levels for better night sleep. 
We developed the lenses to be as bright as possible and still have benchmark performance, to let through maximal amount of safe light for a relaxed and clear viewing experience.

Feel welcome to contact us if you have any further questions.

Sincerely,
THL Sleep Support

Question 2

In what range of nm do the glasses block? And what percentage of light transmits at that nm?

Accepted Answer

Hi Brianna,

Thank you for your great question. The lenses filter out 99,5% of the blue light spectrum (380-500 nm), and over 70% of the all green light (500–565nm).

This includes the melatonin disturbance zone around 460 nm in the blue light spectrum. Studies have demonstrated that this type of light easily disturbs your sleep, emitted in large amounts by LED:s in your TV, smartphone, and computer screens.

We wish you a great day and are ready to answer any other questions you may have.

Sincerely, 
THL Sleep Support

Question 3

What are the dimensions of the two sizes? I usually need narrow size glasses and I'm wondering if these will fit.

Accepted Answer

Hi Julia,

Thank you for your question. BLB08 is a Large sized model with oversize lenses, while BLB10 have a Regular sized frame. The frames are slightly different to be tailored for respective size, which can be seen in the product pictures. 
BLB10 is suitable if you are looking for a narrower fit, with the size 55-17-145 and a total width of 141 mm/ 5.55 inches. To be sure this is a good fit, you can measure and compare the width with another pair you have at home.

We will launch another model in late September, which will have a small sized frame and the same premium materials as the existing ones.

Feel free to contact us if you have any further questions.

Question 4

How do i choose the size?  extra large?	wide fit	regular? 	regular?	wide fit?	wide fit? how do i contact customer service by phone?

Accepted Answer

Most women with slim to average facial width should do ok with regular fit.

ASIN	B07CXYT17C
ASIN	B07CXYT17C
Best Sellers Rank	#317,851 in Health & Personal Care ( See Top 100 in Health & Personal Care ) #2,473 in Reading Glasses
Brand Name	THL SLEEP
Colour	Amber
Customer Reviews	4.4 4.4 out of 5 stars (447)
Date First Available	10 September 2018
Fit Type	Wide Fit
Frame Material Type	Plastic
Frame Type	Full Rim
Is Discontinued By Manufacturer	No
Item Shape	Rectangular
Item Weight	27 Grams
Item Weight	27 g
Item model number	BLB10B
Lens Material Type	Blue Light Blocking Material
Package Dimensions	16.79 x 7.29 x 4.9 cm; 27 g
Pattern	Solid
Special Features	Anti Eye Strain
Style Number	BLB10B
Target Audience	adults
size	L

the HEALTH LISTS THL Blue Light Blocking Reading Glasses for Better Sleep - Amber Orange Computer Filter Anti Eye Strain Lenses (Black) Wide Fit

Description

Specifications

Common Questions