PROPRIETARY TECHNOLOGY
CrystalQ™ Precision Pulse Technology
Powering reliable Nd:YAG pulse delivery for ophthalmic photodisruption.
Proven stability. Consistent performance.
Trusted for decades.
The Science Behind CrystalQ™
Stable Nd:YAG pulse delivery, proven for over 25 years.
LIGHTMED's Nd:YAG laser systems are built on the CrystalQ™ laser cavity architecture. CrystalQ™ uses a passive Chromium-doped crystal (Cr⁴⁺) inside the laser cavity that acts as a saturable absorber, temporarily storing energy before releasing it in a precise, high-energy pulse.
The result is:
- High peak power for optical breakdown
- Extremely short pulse durations
- Super Gaussian beam profile for uniform energy distribution
- Controlled and repeatable energy delivery
Because the switching mechanism is built directly into the optical cavity, it eliminates complex moving components and electronic modulation, resulting in a simpler, more robust and compact design. Unlike electro-optical systems, CrystalQ™ is inherently stable, durable, and built for long-term reliability.
Unique Laser Cavity Architecture
The CrystalQ™ Nd:YAG cavity is purpose-built for pulse stability, using a simplified
solid-state design with no complex electronics or moving parts.
Consistent Pulse Energy
Minimal Shot-to-Shot Variation
Each laser pulse is delivered with minimal shot-to-shot variation, providing physicians with reliable optical breakdown performance.
Controlled Gaussian Beam Profile
Balanced Beam Output
Our optimized cavity design produces a balanced beam profile, reducing excessive peak intensities that can cause unwanted tissue effects.
Low Breakdown Threshold
Greater Precision and Control
The system achieves optical breakdown at lower energy levels, helping physicians perform procedures with greater precision and control.
Reduced Lens Pitting Risk
Protected Contact Lens Surface
By maintaining controlled peak intensity and stable energy delivery, the system helps reduce stress on the contact lens surface, minimizing the potential for lens damage.
Long-Term Crystal Stability
Consistent Performance, Minimal Maintenance
The Cr⁴⁺ crystal maintains consistent optical properties over many years of operation. Fewer components reduce long-term wear and service requirements.
Clinically Proven Technology
Trusted for Over Two Decades
A trusted architecture used in medical laser systems worldwide, validated by more than 25 years of clinical use.
Why Stability Matters in YAG Lasers
For ophthalmic procedures, energy consistency is critical.
Fluctuating pulse energy can lead to:
- ✖︎ Unpredictable tissue interaction
- ✖︎ Inconsistent optical breakdown
- ✖︎ Increased energy requirements
- ✖︎ Higher risk of collateral effects
CrystalQ™ delivers:
- ✔︎ Consistent pulse energy
- ✔︎ Predictable tissue interaction
- ✔︎ Reduced lens stress
- ✔︎ Reliable treatment performance
Clinical Applications
CrystalQ™ enables precise Nd:YAG photodisruption for capsulotomy, iridotomy, and other anterior segment procedures.
Posterior Capsulotomy
Treatment of posterior capsule opacification (PCO) after cataract surgery. CrystalQ™ creates a precise opening in the opacified capsule to restore clear vision.
Laser Iridotomy
Creation of a small opening in the peripheral iris to relieve pupillary block and treat or prevent angle-closure glaucoma. Precise pulse control minimizes collateral damage.
Anterior Segment Procedures
Additional applications including synechialysis and pupilloplasty, all requiring precise photodisruptive energy.
Backed by Science
Peer-reviewed publications supporting Nd:YAG laser applications in ophthalmology.
The benefits of Nd:YAG hyaloidotomy in the management of subhyaloid retinal hemorrhage
Gafar Folohunso Yusuf, Gbemisola Racheal Borisade, Ojoma Sopuruchi Onyeka, Niger J Ophthalmol, 2024
Read Paper →Alina Bakunowicz-Lazarczyk, Beata Urban, Malgorzata Kretowska, Journal of Ophthalmology, 2022
Read Paper →Quality of life results after vitreolysis in patients with symptomatic vitreous floaters
Renzo Cañote, Daniela Rodríguez, Luis Izquierdo Jr, Roger Moncada, Carmen Maldonado, Maria Alejandra Henriquez, The Pan-American Journal of Ophthalmology, 2020
Read Paper →Objective assessment of YAG laser vitreolysis in patients with symptomatic vitreous floaters
Carlos E. Souza, Luiz H. Lima, Heloísa Nascimento, Claudio Zett, Rubens Belfort Jr, International Journal of Retina and Vitreous, 2020
Read Paper →Results of Vitreous Floaters Treatment Using a Yag-Laser Device with a Coaxial Light Splitter
Aznabaev BM, Mukhamadeev TR, Aleksandrov AA, Dibaev TI, Vafiev AS, Shavaliev IKh, Ophthalmology in Russia, 2018
Read Paper →Nd:YAG laser subretinal membranotomy in young patients with long-term retinal detachment
Peng CH, Chen SJ, Tsai CC, Lee FL, Chiou SH, Hsu WM, Eye, 2007
Read Paper →Available on These Systems
CrystalQ™ powers LIGHTMED's Nd:YAG laser platforms.
