As a cutting-edge all-round device, the OS 4 must be the first choice in vitreoretinal surgery. It has set new standards in functionality and quality. The Caliburn trocar systems create ideal access to the posterior segment and allow for smooth cuts and superb wound tightness. The LED GoodLight technology allows for excellent light conditions and individual colour blends. The pneumatic continuous flow cutter benefits from Oertli’s unique fluidics concept by allowing for up to 10,000 cuts a minute. It simultaneously ensures continuous flow and optimum portioning of vitreous body parts to be removed. The innovative Membrane FEELceps provide for strong and optimally dosed holding power and absolute precision. In addition, the OS 4 also boasts an integrated endo laser that can easily be controlled via the multifunctional foot pedal. 


In vitreoretinal surgery, an essential requirement is a simple cannula system that ensures fast, flexible and safe work and best possible postoperative results. Oertli fulfils these requirements in an ideal way – with the Caliburn trocar system.

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Intra-ocular illumination

Selecting the ideal light source is of paramount importance in eye surgery in order to achieve high-quality intra-ocular illumination and to prevent phototoxic impacts and damages to the eye. With GoodLight LED, Oertli has developed a light source that has approximately 60 percent more light intensity than metal halide, while ranging clearly below the similarly strong Xenon light in terms of toxicity.

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Vitreous body removal

A vitreous body removal ought to be performed in cases of diseases of the retina or the vitreous body, inflammations within the eye, or severe vitreous opacities. By removing the vitreous and replacing it with aqueous fluid or replacement fluid, seeing can be improved again. In vitrectomy, Oertli relies on True Flow Control and perfectly integrates the advantages of physics and fluidics into the surgical process.

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With the integration of laser technology, eye surgery has made a significant stride forward. The laser is an efficient and gentle surgical method for a large number of interventions. As an all-in-one device, the OS 4 has an integrated endo laser – and thus a true laser function at the highest level.

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You need to have optimum control of the infusion pressure for both injection and extraction. With the OS 4, the surgeon has control over the three-way-stop-cock at any time – as preferred, either via the pedal or via the touchscreen. Oertli also uses the advantages of physics and fluidics when it comes to injection/extraction – by creating consistent safety and user-friendliness. 

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Endo diathermy

Diathermy is used in manifold ways in vitreoretinal surgery and can be used to stop bleedings. Thanks to the cleverly thought out technology, Oertli surgical platforms have paved the way for extremely fine and directly controllable dosing of high-frequency energy. Therefore, applications of bipolar technology can be performed even more precisely and safely.

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Cataract surgery

Thanks to Oertli innovations such as easyPhaco and HF capsulotomy, cataract surgery can be performed more quickly, safely and calmly than ever before.


Glaucoma surgery

In the treatment of glaucoma, Oerli’s HFDS ab interno MIGS technology provides excellent long-term results.