Alcon has officially introduced its next-generation vitrectomy platform, the Unity™ VCS, at the 2025 Japanese Society of Ophthalmology. This device is positioned as the successor to the widely trusted Constellation Vision System, while also surpassing the high-performing Centurion Vision System used for cataract surgery.
In this article, we compare Unity VCS with previous models from a feature-by-feature standpoint, especially highlighting its relevance and integration in Japanese surgical environments.
What is the Constellation Vision System?
Released in 2008, Constellation is a multifunctional vitrectomy system that can also support cataract surgery. It has earned a reputation worldwide for its reliability and versatility.
What is the Centurion Vision System?
Centurion, launched in 2014, is a cataract-dedicated platform praised for its intraocular pressure (IOP) stability and precise aspiration control. The inclusion of the Active Sentry sensor enables real-time IOP response during surgery.
Unity VCS: A Next-Gen Dual-Purpose Platform
Unity VCS was developed under the concept of “One system for both anterior and posterior segment surgeries.” This integration addresses real needs from surgical teams in Japan—offering seamless transitions between procedures, unified environments, and reducing device switching mid-operation.
Unity VCS vs Constellation / Centurion: Feature Comparison
| Feature | Constellation | Centurion | Unity VCS |
|---|---|---|---|
| Phaco Mode | Ozil (lateral) | Ozil + Active Sentry | 4D Phaco + Active Sentry + Temp Sensor |
| Pump System | Venturi | Peristaltic | Multi-Pump (Irrigation & Aspiration) |
| Cutter Speed | Up to 20,000 cpm | – | Up to 30,000 cpm |
| Laser | Single Spot | – | Tetra Spot (4-directional) |
| Illumination | Halogen | – | RGB LED (independently adjustable) |
How Unity VCS Is Shaping the Future of Eye Surgery
- Enhanced Phaco Efficiency: 4D Phaco improves incision efficiency while reducing tissue trauma.
- Surgical Safety: Real-time IOP and temperature sensors reduce intraoperative risks.
- Customized Operation: Multi-pump fluidics offer surgeon-specific optimization.
- Improved Visualization: Independently adjustable RGB LEDs create clearer surgical fields.
Final Thoughts: Unity VCS as an All-in-One Surgical Platform
| Feature | Traditional Devices | Unity VCS |
|---|---|---|
| Vitrectomy | Constellation for anterior/posterior | High-speed, high-precision cutting |
| Cataract Surgery | Centurion for safety | 4D Phaco for improved efficiency & safety |
| System Integration | Separate systems required | Unified anterior-posterior workflow |
Unity VCS is more than just a next-gen upgrade — it’s a redefinition of integrated eye surgery designed for the realities of modern Japanese ophthalmic practice.
