Sylvain Roy

1995: Diplôme fédéral de médecin

2000: Thèse de doctorat en médecine

2001: Diplôme fédéral de spécialiste FMH en ophtalmologie et ophtalmochirurgie

2003: Diplôme d'étude spécialisée en ingénierie biomédicale

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BIO-377: Physiology by systems

Le but est de connaitre et comprendre le fonctionnement des systèmes cardiovasculaire, urinaire, respiratoire, digestif, ainsi que du métabolisme de base et sa régulation afin de déveloper une réflection scientifique biomédicale.

Collagène

thumb|300px|Fibres de collagène de type I provenant d'un tissu pulmonaire de mammifère, observées au microscope électronique en transmission (MET). Le collagène est une protéine structurale, le plus

Artère

Une (du grec ἀρτηρία, artêria) est un vaisseau sanguin qui conduit le sang du cœur aux autres tissus de l'organisme. La quasi-totalité des artères conduisent le sang oxygéné vers les organes (par

Œil

thumb|Œil humain. thumb|Yeux multiples d'une araignée (Maevia inclemens). thumb|Yeux composés d'une mouche (Holcocephala fusca). thumb|Les crevettes-mantes (ici Odontodactylus scyllarus) sont réputés

Comparison Between the eyeWatch Device and the Ahmed Valve in Refractory Glaucoma

Stéphane Bigler, André Mermoud, Sylvain Roy, Nikolaos Stergiopulos, Constantinos Stergiopulos, Adan Villamarin

Purpose: To assess the efficacy and safety of a glaucoma procedure to control intraocular pressure (IOP) using the adjustable eyeWatch glaucoma drainage device compared with Ahmed glaucoma valve (AGV) in refractory glaucoma. Patients and Methods: Monocentric, retrospective, comparative clinical trial. Patients suffering from refractory glaucoma after failed surgeries and requiring a further glaucoma procedure including an aqueous shunt were enrolled in this study. The first group AGV included patients with an AGV. The second group eW-B included patients receiving an eyeWatch used in connection with a Baerveldt glaucoma implant. The primary outcome was the success rate, defined as an IOP 20% from baseline, and IOP >= 5 mm Hg. Secondary outcomes were mean IOP, number of antiglaucoma medications, visual acuity, number and type of complications. Results: Twenty-one patients were included. The mean follow-up time was 13.2 +/- 3.4 months. Mean IOP decreased from 24.8 +/- 9.0 mm Hg before surgery to 13.8 +/- 3.6 mm Hg at 12 months for group AGV, and 27.3 +/- 7.0 to 12.8 +/- 2.4 mm Hg for group eW-B, respectively (P

LIPPINCOTT WILLIAMS & WILKINS2020

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MRI after successful eyeWatch(TM) implantation

André Mermoud, Sylvain Roy, Nikolaos Stergiopulos, Adan Villamarin

The eyeWatch(TM) is a new glaucoma drainage device that includes an adjustable mechanism that can vary the resistance to aqueous humor outflow during the postoperative period to reduce the burden of postoperative intraocular pressure (IOP) management. The mechanism contains a magnetic rotor that can be adjusted using an external magnetic control unit. Adjustments of the position of the rotor are performed mostly in the initial postoperative follow-up period in order to reach the target IOP. However, for some patients, it might be necessary to perform MRI for the sake of medical investigations. As the MRI is creating a strong magnetic field, this magnetic field is likely to interact with the adjustable rotor of the eyeWatch(TM), resulting in modification of the IOP. We report the case of an 82-old female patient successfully operated with the implantation of an eyeWatch(TM). The patient underwent a cerebral MRI for persistent headache. Shortly after the MRI procedure, the patient was checked at the eye clinic to assess the position of the rotor and to measure the IOP. The eyeWatch(TM) was readjusted to the former position set before undergoing the MRI. No complications were reported in the follow-up after MRI. This case demonstrates that MRI examinations can be safely performed after glaucoma surgery using an eyeWatch(TM) without compromising on the quality of the imaging or the stability of the IOP. This is a complication-free procedure that only requires checking the new position of the rotor and re-adjusting the implant, if necessary, to achieve the target IOP.

SAGE PUBLICATIONS LTD2020

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Outcome and Complications of Combined Modified Deep Sclerectomy and Trabeculectomy for Surgical Management of Glaucoma: A Pilot Study

André Mermoud, Sylvain Roy

Purpose: To report the outcome and complications of a combined surgical technique of modified deep sclerectomy and trabeculectomy (mDST) for glaucoma. Patients and Methods: Retrospective study of 44 eyes of 43 patients with open and closed angle glaucoma who underwent mDST. Outcome measures were: Surgical Success with 3 criteria - (i) criterion 1 = intraocular pressure (IOP) = 20% of preoperative IOP or IOP >= 6 mmHg on 2 consecutive time points after 3 months; (ii) criterion 2 = IOP = 30% of pre-operative IOP or IOP >= 6 mmHg on 2 consecutive time points after 3 months and (iii) criterion 3 = IOP = 40% of preoperative IOP or IOP >= 6 mmHg on 2 consecutive time points after 3 months; IOP Reduction; Use of Anti-glaucoma Medication; Complications; Visual Acuity and Postoperative Interventions. Results: Median follow-up was 40 months (range 24-77 months). At the final follow-up visit, the mean postoperative IOP was 11.5 +/- 4.7 mmHg (p

DOVE MEDICAL PRESS LTD2020

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