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30th Sep 2025

Alexandrite 755nm and Nd:YAG 1064nm Laser Safety Glasses

Laser systems are widely used across medical, cosmetic, and research fields. Among the most common wavelengths are the Alexandrite laser at 755nm and the Nd:YAG laser at 1064nm, both frequently used in dermatology, tattoo removal, hair reduction, and a range of clinical procedures. Because of the high energy levels involved, proper eye protection is essential to ensure operator and patient safety.

The LG-346 laser safety glasses are designed to address these specific needs, providing protection across multiple wavelengths while maintaining visibility and comfort.

Why Protection Matters at 755nm and 1064nm

  • Alexandrite 755nm: Commonly applied in aesthetic medicine for hair reduction, pigmented lesion treatments, and vascular conditions. At this wavelength, the laser energy penetrates deep into the skin, making it effective but also hazardous to the eyes.

  • Nd:YAG 1064nm: Known for its versatility, Nd:YAG is used in both short-pulse (Q-switched) and long-pulse modes. It can treat vascular lesions, perform skin rejuvenation, and is highly effective in tattoo removal. Its deep tissue penetration makes it particularly dangerous to unprotected eyes.

Even brief, scattered reflections at these wavelengths can exceed the maximum permissible exposure (MPE) and cause permanent retinal damage.

Optical Density and Wavelength Coverage

The LG-346 model provides broad protection between 730–1085nm, with targeted optical density ratings for critical wavelengths:

  • 755nm OD 7+

  • 1064nm OD 7+

  • Additional coverage from 190–435nm OD 5+ and 810nm OD 5+

High OD (optical density) values indicate strong attenuation of laser light, reducing beam intensity to safe levels before it reaches the eye.

Safety Standards and Testing

The LG-346 glasses are tested and certified under EN207/208, ANSI Z136, and AS/NZS IEC 60825 safety standards. These certifications ensure they can withstand direct laser exposure for specified durations without compromising protection. For example:

  • EN207 L ratings demonstrate resistance to continuous-wave and pulsed lasers.

  • DIR and LB ratings confirm performance under different laser modes, such as Q-switched pulses.

Practical Features for Users

Beyond meeting technical safety standards, practical usability is also important:

  • Universal fit: Works with or without prescription glasses.

  • Adjustable arms and head strap: Allows a secure and comfortable fit during long procedures.

  • Durability: Stainless steel and silicone-rim construction for stability and long-term use.

  • Visibility: With a visible light transmission (VLT) of 36%, users maintain sufficient field visibility while staying protected.