Femtosecond Laser Technology

The VisuMax femtosecond laser is highly advanced for corneal surgeries, particularly for creating corneal flaps in LASIK and for lenticule extraction in SMILE procedures. It ensures high precision with minimal patient discomfort and offers enhanced control for surgeons. Here’s a breakdown of its notable specifications, features, and benefits:

Key Technical Specifications

• Laser Source: Diode-pumped solid-state laser providing stable and precise performance.
• Wavelength: 1043 nm, optimized for effective corneal penetration.
• Pulse Duration: 220-580 femtoseconds (fs) for high precision in corneal cutting.
• Pulse Repetition Rate: 500 kHz, allowing for faster treatments.
• Spot Size: Lateral spot size of 1 μm and axial spot size of 5 μm for exacting tissue interaction.
• Pulse Energy: 100-150 nanojoules (nJ), tailored for consistent, smooth corneal cutting.

Advanced Features

• Curved Patient Interface:
  • Minimizes the intraocular pressure (IOP) increase, only rising to about 70 mmHg during suction.
  • Reduces risks of subconjunctival hemorrhage and enhances patient comfort during the procedure.
• Integrated HD Video Microscope:
  • Provides a high-definition (1080p) video for real-time monitoring.
  • Digital overlays facilitate precise centration and incision placement, supporting accuracy throughout the surgery.
• Precision Control Software:
  • Customizable parameters for lenticule and flap creation to suit specific patient needs.
  • Automated cyclotorsion correction helps align incisions more accurately.
  • Energy adjustment algorithms ensure consistent cutting across corneas with variable densities.
• Treatment Planning Software:
  • Allows integration with corneal topography and wavefront data for a personalized approach.
  • Customizable optical and transition zones adapt treatments to individual corneal shapes and refractive needs.

Clinical Benefits

• Minimally Invasive:
  • Enables precise flap creation, reducing the risk of postoperative dry eye syndrome.
  • Delivers accuracy in flap thickness (±5 μm) and diameter (±0.1 mm), minimizing tissue disruption.
• Predictable and Precise Incisions:
  • Achieves lenticule edge precision of less than 1 μm, supporting refined outcomes.
  • Incision sizes can be as small as 2 mm, contributing to faster recovery.
• Enhanced Visual Recovery and Biomechanical Stability:
  • Facilitates SMILE for rapid visual recovery and preserves corneal stability.
  • Treats higher levels of myopia (up to -10.00D), expanding treatment options for a broader patient base.
• Reduced Complications:
  • Lowers the risk of buttonhole flaps and free caps compared to traditional mechanical microkeratomes, improving safety.

The VisuMax femtosecond laser’s features and precision engineering make it a cornerstone for corneal refractive surgeries, providing outstanding control, comfort, and outcomes for both patients and surgeons.