Assessment of Effectiveness Ex-Press Surgery Modification

Military Institute od Medicine National Research Institute

Status: Completed

Conditions: Glaucoma, Primary Open Angle; Glaucoma Secondary; Glaucoma, Open-Angle

Treatments: Procedure: phacoemulsification with implantation of the Ex-Press; Procedure: deep sclerectomy, phacoemulsification, ExPress implantation

Study type: Interventional

Funder types: Other

Identifiers

NCT03800589

15/WIM/2010

Details and patient eligibility

About

The purpose of the study is to compare the effectiveness and safety profile of ExPress implantation versus partial deep sclerectomy combined with ExPress implantation with simultaneously phacoemulsification.

Full description

Mermoud et all (1) proposed a modification of the classical surgical technique: combined deep sclerectomy (DS) with ExPress device implantation. The goal of this modification was to enhance hypotensive effect of well known procedure, and also to simplify non-penetrating surgery, which is a procedure with a long learning curve. Mermoud's idea provides the possibility of avoiding complications related to dissection of the filtering bleb and gives hope for achieve of better results in comparison to the classical procedure. Thanks to this, the surgical procedure could be performed earlier, even in the case of glaucoma with low intraocular pressure (IOP), where vascular factors are largely responsible for the progression of neuropathy. To demonstrate the potential of both types of procedures with the application of the ExPress implant, the authors decided to conduct a prospective, randomized study with a 2-year observation period concerning the efficacy, safety and stability of effects achieved.

Enrollment: 186 patients

Sex: All

Ages: 21+ years old

Volunteers: Accepts Healthy Volunteers

Inclusion criteria

• co-existing glaucoma and cataract (NC1, NC2) classified by means of the LOCS III scale
• patients with primary open-angle glaucoma (POAG), pseudoexfoliative glaucoma (PGX) and normal tension glaucoma (NTG), in which a satisfactory IOP level was not achieved despite maximum tolerable hypotensive treatment, both topical and systemic,
• documented progression of loss of field of vision,
• significant daily IOP fluctuations,
• no cooperation from patient with regard to application of anti-glaucoma treatment,
• allergy to topical medication
• written consent to involvement and participation in the study for a period of at least 24 months

Exclusion criteria

• no consent to participation in the study
• prior surgical and laser procedures in the area of the eye
• narrow- or closed-angle glaucoma
• post-inflammatory or post-traumatic secondary glaucoma
• chronic illness of the cornea or optic nerve
• advanced macular degeneration
• active inflammatory process
• pregnancy
• systemic steroid therapy

Trial design

Primary purpose: Treatment

Allocation: Randomized

Interventional model: Parallel Assignment

Masking: None (Open label)

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186 participants in 2 patient groups

phaco and Ex-Press

Active Comparator group

Description:

patients with co-existing cataract and glaucoma, qualified to the combined glaucoma surgery according to the protocol which were randomized to phacoemulsification with implantation of the Ex-Press

Treatment:

Procedure: phacoemulsification with implantation of the Ex-Press

deep sclerectomy, phaco and Ex-press

Active Comparator group

Description:

patients with co-existing cataract and glaucoma, qualified to the combined glaucoma surgery according to the protocol which were randomized to deep sclerectomy, phacoemulsification, ExPress implantation

Treatment:

Procedure: deep sclerectomy, phacoemulsification, ExPress implantation