[Visual field loss in eyes undergoing minimally invasive glaucoma surgery in Iceland].

Introduction: Glaucoma is a degenerative disease of the optic nerve and is marked by visual field defects (VFD). The only approved treatment is IOP lowering, either with eye drops, laser or surgery. Minimally invasive glaucoma surgery (MIGS) has become an appealing treatment modality, offering IOP lowering effect without the complication rates of trabeculectomy or the patient adherence required for pharmacologic therapy.