The OS 4 Up is the next evolution in cataract and vitreoretinal surgery, building on Oertli’s trusted surgical platforms. Designed for modern ophthalmic workflows, the OS 4 Up delivers enhanced performance, refined control, and an intuitive surgical experience across a wide range of procedures.

Developed with the surgeon in mind, the OS 4 Up represents a forward-looking step in efficiency, precision, and workflow optimisation. With thoughtful innovations that support both cataract and posterior segment surgery, this platform reflects Oertli’s continued commitment to advancing ophthalmic technology and enabling confident, controlled surgery.

Next Generation OS 4 Up™

The OS 4 Up introduces key innovations that elevate surgical stability, visualisation, and control.

Dynamic Infusion

Reduced IOP. Maximum stability. Total trust.

Dynamic Infusion allows surgeons to work at IOP settings closer to physiological levels by automatically compensating for aspiration-induced fluctuations inside the eye. Combined with the speed and precision of Oertli’s SPEEP technology, this results in remarkable chamber stability — even at peak performance.

PACS – Phaco Assisted Cataract Surgery

Phaco reimagined. Smooth. Controlled. Consistent.

PACS delivers a re-engineered approach to phacoemulsification by actively controlling the phaco tip. This ensures smooth, low-repulsion emulsification across all cataract densities, from soft to pre-fragmented. Energy delivery remains controlled, predictable, and independent of handpiece age or lens hardness.

Power LED Plus

See more. Adjust more. Trust more.

Power LED Plus enables independent control of light intensity and colour spectrum for optimal visualisation in every surgical situation. Covering key ophthalmic wavelengths, it provides precise contrast exactly where it is needed.

Preset light settings can be recalled instantly via the foot pedal, while uniform, high-quality illumination and gentle blue light ensure safe, consistent performance across both 3D and standard microscope systems.

easyVit

Dual linear control. One smooth movement.

easyVit offers dual linear control in a single, intuitive pedal movement. A complete PPV can be performed within one programme, eliminating the need to switch between core and peripheral vitrectomy settings.

Find out more about the impressive performance and enhanced features of the OS 4 Up.