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1 General aspects (0)   1.1 Epidemiology (12)   1.2 Population genetics (1)   1.3 Pathogenesis (1)   1.4 Quality of life (4)   1.5 Glaucomas as cause of blindness (2)   1.6 Prevention and screening (3) 2 Anatomical structures in glaucoma (0)   2.1 Conjunctiva (3)   2.2 Cornea (34)   2.3 Sclera (4)   2.4 Anterior chamber angle (3)   2.5 Meshwork (0)     2.5.1 Trabecular meshwork (6)     2.5.2 Schlemms canal (0)     2.5.3 Scleral outlet channels (0)   2.6 Aqueous humor dynamics (1)     2.6.1 Production (3)     2.6.2 Outflow (0)       2.6.2.1 Trabecular meshwork (0)       2.6.2.2 Uveoscleral (1)     2.6.3 Compostion (1)   2.7 Episcleral veins and venous pressure (1)   2.8 Iris (3)   2.9 Ciliary body (2)   2.10 Lens (0)   2.11 Vitreous body (0)   2.12 Choroid, peripapillary choroid, peripapillary atrophy (1)   2.13 Retina and retinal nerve fibre layer (25)   2.14 Optic disc (23)   2.15 Optic nerve (4)   2.16 Chiasma and retrochiasmal central nervous system (2)   2.17 Stem cells (0)   2.20 Other (2) 3 Laboratory methods (0)   3.1 Microscopy (1)   3.2 Electron microscopy (0)   3.3 Immunohistochemistry (3)   3.4 Molecular genetics (0)     3.4.1 Linkage studies (1)     3.4.2 Gene studies (12)   3.5 Molecular biology incl. SiRNA (9)   3.6 Cellular biology (8)   3.7 Biochemistry (3)   3.8 Pharmacology (5)   3.9 Pathophysiology (8)   3.10 Immunobiology (4)   3.11 Pharmacogenetics (0)   3.12 Proteomics (0)   3.13 In vivo imaging (0)     3.13.1 Laser Scanning (0)       3.13.1.1 Confocal Scanning Laser Ophthalmoscopy (0)       3.13.1.2 Confocal Scanning Laser Polarimetry (0)     3.13.2 Optical Coherence Tomography (0)       3.13.2.1 Anterior Segment (0)       3.13.2.2 Posterior Segment (0)     3.13.3 RGC Imaging (0)     3.13.4 Other (0)   3.20 Other (0) 4 Tissue culture of ocular cells (0) 5 Experimental glaucoma; animal models (37)   5.1 Rodent (0)   5.2 Primates (0)   5.3 Other (0) 6 Clinical examination methods (0)   6.1 Intraocular pressure measurement; factors affecting IOP (53)     6.1.1 Devices, techniques (0)     6.1.2 Fluctuation, circadian rhythms (0)     6.1.3 Factors affecting IOP (0)   6.2 Tonography, aqueous flow measurement (see also 2.6) (1)   6.3 Biomicroscopy (slitlamp) (0)     6.3.1 Anterior segment (3)     6.3.2 Posterior segment (0)   6.4 Gonioscopy (3)   6.5 Ophthalmoscopy (0)   6.6 Visual field examination and other visual function tests (0)     6.6.1 Conventional manual (1)     6.6.2 Automated (10)     6.6.3 Special methods (e.g. color, contrast, SWAP etc.) (9)   6.7 Electro-ophthalmodiagnosis (5)   6.8 Photography (0)     6.8.1 Anterior segment (0)     6.8.2 Posterior segment (7)   6.9 Computerized image analysis (2)     6.9.1 Laser scanning (21)       6.9.1.1 Confocal Scanning Laser Ophthalmoscopy (0)       6.9.1.2 Confocal Scanning Laser Polarimetry (0)     6.9.2 Optical coherence tomography (12)       6.9.2.1 Anterior (0)       6.9.2.2 Posterior (0)     6.9.5 Other (3)   6.10 Fluorescein (ICG) angiography (0)     6.10.1 Anterior segment (0)     6.10.2 Posterior segment (0)   6.11 Bloodflow measurements (13)   6.12 Ultrasonography and ultrasound biomicroscopy (6)   6.13 Provocative tests (2)   6.19 Telemedicine (1)   6.20 Progression (1)   6.30 Other (3) 8 Refractive errors in relation to glaucoma (0)   8.1 Myopia (3)   8.2 Hypermetropia (0)   8.3 Contact lenses (0)   8.4 Refractive surgical procedures (1)   8.5 Other (0) 9 Clinical forms of glaucomas (0)   9.1 Developmental glaucomas (0)     9.1.1 Congenital glaucoma, Buphthalmos (5)     9.1.2 Juvenile glaucoma (10)     9.1.3 Syndromes of Axenfeld, Rieger, Peters, aniridia (4)     9.1.4 Other (1)   9.2 Primary open angle glaucomas (1)     9.2.1 Ocular hypertension (6)     9.2.2 Other risk factors for glaucoma (0)     9.2.3 Open angle glaucoma with elevated IOP (6)     9.2.4 Normal pressure glaucoma (12)   9.3 Primary angle closure glaucomas (5)     9.3.1 Acute primary angle closure glaucoma (pupillary block) (4)     9.3.2 Chronic primary angle closure glaucoma (pupillary block) (4)     9.3.3 Plateau iris syndrome (1)     9.3.4 Primary angle closure suspect (0)     9.3.5 Primary angle closure (0)     9.3.10 Other (1)   9.4 Glaucomas associated with other ocular and systemic disorders (1)     9.4.1 Steroid-induced glaucoma (5)     9.4.2 Glaucomas associated with disorders of the cornea, conjunctiva, sclera (1)       9.4.2.1 Iridocorneal endothelial syndrome (ICE, incl. irisatrophy) (1)       9.4.2.2 Posterior polymorphous dystrophy (0)       9.4.2.3 Fuchs' endothelial dystrophy (0)       9.4.2.5 Other (1)     9.4.3 Glaucomas associated with disorders of the iris and ciliary body (0)       9.4.3.1 Pigmentary glaucoma (3)       9.4.3.5 Other (1)     9.4.4 Glaucomas associated with disorders of the lens (1)       9.4.4.1 Exfoliation syndrome (6)       9.4.4.2 Glaucomas associated with cataracts (4)       9.4.4.3 Glaucomas associated with lens dislocation (4)       9.4.4.5 Other (1)     9.4.5 Glaucomas associated with disorders of the retina, choroid and vitreous (0)       9.4.5.1 Neovascular glaucoma (9)       9.4.5.5 Other (0)     9.4.6 Glaucomas associated with inflammation, uveitis (4)     9.4.7 Glaucomas associated with ocular trauma (2)     9.4.8 Glaucomas associated with intraocular tumors (1)     9.4.9 Glaucomas associated with elevated episcleral venous pressure (0)       9.4.10 Glaucomas associated with hemorrhage (0)     9.4.11 Glaucomas following intraocular surgery (0)       9.4.11.1 Ciliary block (malignant) glaucoma (2)       9.4.11.2 Glaucomas in aphakia and pseudophakia (1)       9.4.11.3 Epithelial, fibrous, and endothelial proliferation (0)       9.4.11.4 Glaucomas associated with corneal surgery (0)       9.4.11.5 Glaucomas associated with vitreoretinal surgery (0)     9.4.15 Glaucoma in relation to systemic disease (8)     9.4.20 Other (1) 10 Differential diagnosis e.g. anterior and posterior ischemic optic neuropathy (5) 11 Medical treatment (0)   11.1 General management, indication (9)   11.2 Cholinergic drugs (1)   11.3 Adrenergic drugs (0)     11.3.1 Epinephrine (0)     11.3.2 Thymoxamine, dapiprazole (0)     11.3.3 Apraclonidine, brimonidine (6)     11.3.4 Betablocker (13)     11.3.5 Other (2)   11.4 Prostaglandins (31)   11.5 Carbonic anhydrase inhibitors (0)     11.5.1 Systemic (1)     11.5.2 Topical (8)   11.6 Osmotic treatment (0)   11.7 Treatment of bloodflow (0)   11.8 Neuroprotection (14)   11.9 Gene therapy (3)   11.13 Combination therapy (0)     11.13.1 Betablocker and pilocarpine (0)     11.13.2 Betablocker and carbon anhydrase inhibitor (0)     11.13.3 Betablocker and brimonidine (0)     11.13.4 Betablocker and prostaglandin (0)     11.13.5 Other (0)   11.14 Investigational drugs; pharmacological experiments (12)   11.15 Other drugs in relation to glaucoma (1)   11.16 Vehicles, delivery systems, pharmacokinetics, formulation (5)   11.17 Cooperation with medical therapy e.g. persistency, compliance, adherence (2)   11.20 Other (2) 12 Surgical treatment (0)   12.1 General management, indication (9)   12.2 Laser iridotomy (5)   12.3 Laser iridoplasty (3)   12.4 Laser trabeculoplasty and other laser treatment of the angle (8)   12.7 Surgical iridectomy (1)   12.8 Filtering surgery (9)     12.8.1 Without tube implant (7)     12.8.2 With tube implant or other drainage devices (12)     12.8.3 Non-perforating (9)     12.8.4 Using laser (0)     12.8.5 Other (2)     12.8.10 Woundhealing antifibrosis (17)     12.8.11 Complications, endophthalmitis (2)   12.9 Trabeculotomy, goniotomy (5)   12.10 Cyclodestruction (4)   12.11 Cyclodialysis (0)   12.12 Cataract extraction (5)     12.12.1 Intracapsular (0)     12.12.2 Extracapsular (0)     12.12.3 Phacoemulsification (4)   12.14 Combined cataract extraction and glaucoma surgery (1)     12.14.1 Intracapsular (0)     12.14.2 Extracapsular (0)     12.14.3 Phacoemulsification (6)   12.15 Capsulotomy (1)   12.16 Vitrectomy (1)   12.17 Anesthesia (5)   12.20 Other (4) 13 Therapeutic prognosis and outcome (0)   13.1 Prognostic factors (0)   13.2 Outcome (0)     13.2.1 IOP (0)     13.2.2 Visual field (0)       13.2.2.1 Progression (0)       13.2.2.2 Improvement (0)     13.2.3 Other (0) 14 Costing studies; pharmacoeconomics (7) 15 Miscellaneous (4)

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Abstract #15068 Published in IGR 8-4

Screening for glaucoma in Canada: a systematic review of the literature

Einarson TR; Vicente C; Machado M; Covert D; Trope GE; Iskedjian M
Canadian Journal of Ophthalmology 2006; 41: 709-721

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BACKGROUND: To provide a recommendation on screening for glaucoma in Canada based on a review of recent evidence available in the literature. METHODS: A systematic literature review was performed to identify publications from MEDLINE, EMBASE, HealthSTAR, and Cochrane databases from 1990 to 2005. Relevant articles were categorized as economic studies, epidemiologic and intervention studies, or policy papers. Websites and publications from provincial, state, national, and international health authorities were reviewed for policy recommendations and guidelines. RESULTS: We identified 39 articles (34 epidemiology and intervention, and 5 economic studies) for the review. From the economic studies, 2 were simple cost analyses and 3 were full economic evaluations (cost-effectiveness). Gaps were observed from these economic studies, where incremental cost-effectiveness analyses of modelled screening programmes were not observed. A large number of alternatives (i.e., screening techniques) and diverse outcome measures were found in the 34 epidemiology and intervention studies. This shows that evidence on the effectiveness of glaucoma screening programmes is available to be used in future modelled analyses. Neutral recommendation made by the Canadian Task Force on Periodic Health Examination regarding glaucoma screening in Canada could be related to the lack of reliable data and models used in past cost-effectiveness analyses. INTERPRETATION: A need exists to re-evaluate the cost-effectiveness of a screening programme for glaucoma in Canada with updated efficacy and cost data. Health and monetary benefits could be improved compared with current practice and decision-makers would have the best available data when re-evaluating the policy on screening for glaucoma.

Dr. M. Iskedjian, 1175, North Service Road, W., Suite 211, Oakville, ON L6M 2W1, Canada

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Classification:

1.6 Prevention and screening (Part of: 1 General aspects)
14 Costing studies; pharmacoeconomics

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