# GL1988 Optician Services

As an optician, GL1988 envisions a world where our customers' eyes are the most comfortable. Being a proud member of the Korean Optometrists Association, I run my business with dedication and pride.

## Our Glasses

Our glasses provide superior protection with features like:

- Blocking **99.9% of ultraviolet rays** (UV-A, B) that are harmful to your eyes.
- Blocking **99.9% of blue light**.

To demonstrate our product's effectiveness, we offer a blue light test kit.

### How to Use the Blue Light Test Kit

1. Cover half of the sky blue test card with the blue light blocking glasses.
2. Shine the blue light laser from the keychain over the entire card.
3. Observe the difference between the protected area and the blackened area to see the blue light blocking effect.

## TR-90 Material

What is **TR-90**?

- Tetoron Rayon
- No deformation from sweat or moisture.
- 100% domestically produced.
- Directly processed by an experienced optician with 10 years in the field.

### Features of TR-90 Glasses Frames

- Ultra-light, weighing only **10g**.
- Experience the elasticity and durability against deformation and external forces.
- Transparent, square-shaped design.

## Blue Light Blocking Lenses

- Effectively block **99.9% of UV rays**.
- Suitable for both indoor and outdoor use.
- Come with a super water-repellent coating for easy cleaning.
- Medium refractive index lens.
- Available in shapes like square and colors like gray and matte black.

### Average Monthly Usage Times

- **PC**: 1570 minutes.
- **Smartphone**: 1570 minutes.

## The Dangers of Blue Light

Blue light, emanating from devices like PCs and smartphones, is part of the visible light spectrum with a wavelength of **380~500NM**. It can penetrate deeply into the eye and potentially affect vision and the retina.

## Lens Manufacturing Process

To ensure the highest quality, our lenses undergo:

1. Attachment of suction to the focal point before inserting into the 3D stereoscopic design equipment.
2. PD, OH, and bevel setting before 3D processing.
3. 3D stereoscopic processing with specialized equipment.
4. Manual finishing to prevent distortion and to trim sharp edges.

After lens processing:

1. Insert the lens into the frame and check the balance on both sides.
2. Fit the glasses for comfort, suitable for more than 90% of Koreans.

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Our process is documented through photos and videos, showcasing the production by a licensed optician with over 10 years of experience, mirroring the process used in actual optical shops.

GL1988 TR blue light blocking Specs 10g