THE OS4 IN GLAUCOMA SURGERY
For surgical treatment of glaucoma, the OS 4 generates appreciable added value in microinvasive glaucoma surgery (MIGS). High‑Frequency Deep Sclerotomy (HFDS) has a low rate of complications and delivers promising long-term results even with a shorter procedure. HFDS provides direct access from the anterior chamber to the Schlemm’s canal and further into the sclera. The outflow resistance of the trabecular meshwork is thus significantly reduced. The HFDS glaucoma tip is inserted through a 1.2‑mm paracentesis and uses high-frequency diathermy delivery to place six small sclerotomy pockets in the iridocorneal angle, which provide an improved outflow of the aqueous humour.
How does HFDS work?
Instruments
Diathermy handpiece, reusable | |
VE201710 | Diathermy handpiece, long, reusable |
VE201712 | Diathermy handpiece, short, reusable |
Advantages of HFDS®
- Implant‑free micro‑invasive glaucoma surgery[20]
- Promising long-term results with a stable and long-term reduction in IOP and AGM[2]
- Short procedure time with high safety profile[2, 8, 14]
- Combined with cataract surgery or a stand-alone application
You want to know more?
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High Frequency Deep Sclerotomy, Dr Florian Sutter, Ophthalmology Times Europe, 2022
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Triggerfish Recording of IOP Patterns in Combined HFDS Minimally Invasive Glaucoma and Cataract Surgery, Journal of Clinical Medicine, 2021
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Ab Interno Approach with No Implant Needed, The Ophthalmologist, 2021
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High-Frequency Deep Sclerotomy, A Minimal Invasive Ab Interno Glaucoma Procedure Combined with Cataract Surgery: Physical Properties and Clinical Outcome, Eye Clinic Orasis, 2019
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The Efficacy and Safety of High-Frequency Deep Sclerotomy in Treatment of Chronic Open-Angle Glaucoma Patients, Research Institute of Ophthalmology Cairo, Cairo University Faculty of Medicine, 2019
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Ab-Interno Deep Sclerotomy in Eight Simple Steps, Cataract & Refractive Surgery Today Europe, 2017
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The Future Way of Phaco & MIGS Surgeries - Highlights from ESCRS Satellite Symposium, The Ophthalmologist, 2015
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HFDS Glaucoma Procedure, Dr. Bojan Pajic, European Opthalmic Review, 2012
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New Minimally Invasive, Deep Sclerotomy ab interno Surgical Procedure for Glaucoma, Six Years of Follow-up, Dr. Bojan Pajic, Journal of Glaucoma, 2011
Cataract surgery
Innovations such as HF capsulotomy and easyPhaco are developments that aim to make cataract surgery faster and more efficient.
Vitreoretinal surgery
In vitrectomy surgery, the OS 4 ensures exceptional results thanks to its cleverly thought-out fluidics concept and innovative instruments.
Oertli data on file
[2] B. Pajic, B. Pajic-Eggspuehler, and I. Haefliger, “New minimally invasive, deep sclerotomy ab-interno surgical procedure for glaucoma, six years of follow-up,” Journal of glaucoma, vol. 20, no. 2, pp. 109–114, 2011, doi: 10.1097/IJG.0b013e3181dddf31.
[8] B. Pajic, Z. Cvejic, K. Mansouri, M. Resan, and R. Allemann, “High-Frequency Deep Sclerotomy, A Minimal Invasive Ab-interno Glaucoma Procedure Combined with Cataract Surgery: Physical Properties and Clinical Outcome,” Applied Sciences, vol. 10, no. 1, p. 218, 2020, doi: 10.3390/app10010218.
[14] Kaweh Mansouri, M.D., M.P.H., A Multicenter Prospective Study of High-Frequency Deep Sclerotomy (HFDS) in Open-Angle Glaucoma: 3-Year Outcomes: Manuskript; UNPUBLISHED DATA.
[20] Aleksandar Pavlovic, Ab-Interno Deep Sclerotomy in Eight Simple Steps. [Online]. Available: https://www.oertli-instruments.com/downloads/glaukom/crst_september_2017_ab-interno_deep_sclerotomy_in_eight_simple_steps.pdf