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1 General aspects (0)   1.1 Epidemiology (9)   1.2 Population genetics (2)   1.3 Pathogenesis (3)   1.4 Quality of life (16)   1.5 Glaucomas as cause of blindness (2)   1.6 Prevention and screening (11) 2 Anatomical structures in glaucoma (0)   2.1 Conjunctiva (5)   2.2 Cornea (13)   2.3 Sclera (5)   2.4 Anterior chamber angle (1)   2.5 Meshwork (0)     2.5.1 Trabecular meshwork (8)     2.5.2 Schlemms canal (2)     2.5.3 Scleral outlet channels (0)   2.6 Aqueous humor dynamics (0)     2.6.1 Production (0)     2.6.2 Outflow (1)       2.6.2.1 Trabecular meshwork (0)       2.6.2.2 Uveoscleral (0)     2.6.3 Compostion (3)   2.7 Episcleral veins and venous pressure (3)   2.8 Iris (4)   2.9 Ciliary body (0)   2.10 Lens (2)   2.11 Vitreous body (2)   2.12 Choroid, peripapillary choroid, peripapillary atrophy (10)   2.13 Retina and retinal nerve fibre layer (23)   2.14 Optic disc (31)   2.15 Optic nerve (5)   2.16 Chiasma and retrochiasmal central nervous system (4)   2.17 Stem cells (2)   2.20 Other (0) 3 Laboratory methods (0)   3.1 Microscopy (0)   3.2 Electron microscopy (0)   3.3 Immunohistochemistry (0)   3.4 Molecular genetics (0)     3.4.1 Linkage studies (0)     3.4.2 Gene studies (16)   3.5 Molecular biology incl. SiRNA (16)   3.6 Cellular biology (22)   3.7 Biochemistry (5)   3.8 Pharmacology (15)   3.9 Pathophysiology (9)   3.10 Immunobiology (5)   3.11 Pharmacogenetics (0)   3.12 Proteomics (1)   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 (1)   3.20 Other (0) 4 Tissue culture of ocular cells (0) 5 Experimental glaucoma; animal models (0)   5.1 Rodent (26)   5.2 Primates (0)   5.3 Other (2) 6 Clinical examination methods (0)   6.1 Intraocular pressure measurement; factors affecting IOP (0)     6.1.1 Devices, techniques (10)     6.1.2 Fluctuation, circadian rhythms (3)     6.1.3 Factors affecting IOP (15)   6.2 Tonography, aqueous flow measurement (see also 2.6) (0)   6.3 Biomicroscopy (slitlamp) (0)     6.3.1 Anterior segment (0)     6.3.2 Posterior segment (2)   6.4 Gonioscopy (2)   6.5 Ophthalmoscopy (1)   6.6 Visual field examination and other visual function tests (0)     6.6.1 Conventional manual (0)     6.6.2 Automated (24)     6.6.3 Special methods (e.g. color, contrast, SWAP etc.) (10)   6.7 Electro-ophthalmodiagnosis (3)   6.8 Photography (0)     6.8.1 Anterior segment (1)     6.8.2 Posterior segment (11)   6.9 Computerized image analysis (0)     6.9.1 Laser scanning (0)       6.9.1.1 Confocal Scanning Laser Ophthalmoscopy (1)       6.9.1.2 Confocal Scanning Laser Polarimetry (1)     6.9.2 Optical coherence tomography (0)       6.9.2.1 Anterior (4)       6.9.2.2 Posterior (49)     6.9.5 Other (11)   6.10 Fluorescein (ICG) angiography (0)     6.10.1 Anterior segment (0)     6.10.2 Posterior segment (0)   6.11 Bloodflow measurements (18)   6.12 Ultrasonography and ultrasound biomicroscopy (10)   6.13 Provocative tests (0)   6.19 Telemedicine (6)   6.20 Progression (13)   6.30 Other (7) 8 Refractive errors in relation to glaucoma (1)   8.1 Myopia (9)   8.2 Hypermetropia (0)   8.3 Contact lenses (0)   8.4 Refractive surgical procedures (1)   8.5 Other (1) 9 Clinical forms of glaucomas (0)   9.1 Developmental glaucomas (0)     9.1.1 Congenital glaucoma, Buphthalmos (12)     9.1.2 Juvenile glaucoma (16)     9.1.3 Syndromes of Axenfeld, Rieger, Peters, aniridia (1)     9.1.4 Other (1)   9.2 Primary open angle glaucomas (1)     9.2.1 Ocular hypertension (9)     9.2.2 Other risk factors for glaucoma (11)     9.2.3 Open angle glaucoma with elevated IOP (4)     9.2.4 Normal pressure glaucoma (17)   9.3 Primary angle closure glaucomas (0)     9.3.1 Acute primary angle closure glaucoma (pupillary block) (8)     9.3.2 Chronic primary angle closure glaucoma (pupillary block) (5)     9.3.3 Plateau iris syndrome (0)     9.3.4 Primary angle closure suspect (2)     9.3.5 Primary angle closure (7)     9.3.10 Other (0)   9.4 Glaucomas associated with other ocular and systemic disorders (1)     9.4.1 Steroid-induced glaucoma (6)     9.4.2 Glaucomas associated with disorders of the cornea, conjunctiva, sclera (0)       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 (0)     9.4.3 Glaucomas associated with disorders of the iris and ciliary body (0)       9.4.3.1 Pigmentary glaucoma (4)       9.4.3.5 Other (0)     9.4.4 Glaucomas associated with disorders of the lens (0)       9.4.4.1 Exfoliation syndrome (6)       9.4.4.2 Glaucomas associated with cataracts (3)       9.4.4.3 Glaucomas associated with lens dislocation (1)       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 (5)       9.4.5.5 Other (10)     9.4.6 Glaucomas associated with inflammation, uveitis (7)     9.4.7 Glaucomas associated with ocular trauma (1)     9.4.8 Glaucomas associated with intraocular tumors (2)     9.4.9 Glaucomas associated with elevated episcleral venous pressure (1)       9.4.10 Glaucomas associated with hemorrhage (3)     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 (5)       9.4.11.3 Epithelial, fibrous, and endothelial proliferation (0)       9.4.11.4 Glaucomas associated with corneal surgery (2)       9.4.11.5 Glaucomas associated with vitreoretinal surgery (3)     9.4.15 Glaucoma in relation to systemic disease (28)     9.4.20 Other (0) 10 Differential diagnosis e.g. anterior and posterior ischemic optic neuropathy (4) 11 Medical treatment (0)   11.1 General management, indication (3)   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 (1)     11.3.4 Betablocker (4)     11.3.5 Other (0)   11.4 Prostaglandins (13)   11.5 Carbonic anhydrase inhibitors (1)     11.5.1 Systemic (1)     11.5.2 Topical (1)   11.6 Osmotic treatment (1)   11.7 Treatment of bloodflow (0)   11.8 Neuroprotection (28)   11.9 Gene therapy (1)   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 (1)     11.13.4 Betablocker and prostaglandin (2)     11.13.5 Other (1)   11.14 Investigational drugs; pharmacological experiments (8)   11.15 Other drugs in relation to glaucoma (16)   11.16 Vehicles, delivery systems, pharmacokinetics, formulation (16)   11.17 Cooperation with medical therapy e.g. persistency, compliance, adherence (6)   11.20 Other (0) 12 Surgical treatment (0)   12.1 General management, indication (3)   12.2 Laser iridotomy (3)   12.3 Laser iridoplasty (1)   12.4 Laser trabeculoplasty and other laser treatment of the angle (5)   12.7 Surgical iridectomy (0)   12.8 Filtering surgery (0)     12.8.1 Without tube implant (10)     12.8.2 With tube implant or other drainage devices (50)     12.8.3 Non-perforating (11)     12.8.4 Using laser (0)     12.8.5 Other (0)     12.8.10 Woundhealing antifibrosis (12)     12.8.11 Complications, endophthalmitis (10)   12.9 Trabeculotomy, goniotomy (11)   12.10 Cyclodestruction (9)   12.11 Cyclodialysis (0)   12.12 Cataract extraction (0)     12.12.1 Intracapsular (0)     12.12.2 Extracapsular (0)     12.12.3 Phacoemulsification (9)   12.14 Combined cataract extraction and glaucoma surgery (0)     12.14.1 Intracapsular (0)     12.14.2 Extracapsular (0)     12.14.3 Phacoemulsification (8)   12.15 Capsulotomy (0)   12.16 Vitrectomy (0)   12.17 Anesthesia (0)   12.20 Other (1) 13 Therapeutic prognosis and outcome (0)   13.1 Prognostic factors (2)   13.2 Outcome (0)     13.2.1 IOP (1)     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 (5) 15 Miscellaneous (23)

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Abstract #79481 Published in IGR 20-2

Prevalence and causes of blindness and vision impairment: magnitude, temporal trends and projections in South and Central Asia

Nangia V; Jonas JB; George R; Lingam V; Ellwein L; Cicinelli MV; Das A; Flaxman SR; Keeffe JE; Kempen JH; Leasher J; Limburg H; Naidoo K; Pesudovs K; Resnikoff S; Silvester AJ; Tahhan N; Taylor HR; Wong TY; Bourne RRA;
British Journal of Ophthalmology 2019; 103: 871-877

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BACKGROUND: To assess prevalence and causes of vision loss in Central and South Asia. METHODS: A systematic review of medical literature assessed the prevalence of blindness (presenting visual acuity<3/60 in the better eye), moderate and severe vision impairment (MSVI; presenting visual acuity <6/18 but ≥3/60) and mild vision impairment (MVI; presenting visual acuity <6/12 and ≥6/18) in Central and South Asia for 1990, 2010, 2015 and 2020. RESULTS: In Central and South Asia combined, age-standardised prevalences of blindness, MSVI and MVI in 2015 were for men and women aged 50+years, 3.72% (80% uncertainty interval (UI): 1.39-6.75) and 4.00% (80% UI: 1.41-7.39), 16.33% (80% UI: 8.55-25.47) and 17.65% (80% UI: 9.00-27.62), 11.70% (80% UI: 4.70-20.32) and 12.25% (80% UI:4.86-21.30), respectively, with a significant decrease in the study period for both gender. In South Asia in 2015, 11.76 million individuals (32.65% of the global blindness figure) were blind and 61.19 million individuals (28.3% of the global total) had MSVI. From 1990 to 2015, cataract (accounting for 36.58% of all cases with blindness in 2015) was the most common cause of blindness, followed by undercorrected refractive error (36.43%), glaucoma (5.81%), age-related macular degeneration (2.44%), corneal diseases (2.43%), diabetic retinopathy (0.16%) and trachoma (0.04%). For MSVI in South Asia 2015, most common causes were undercorrected refractive error (accounting for 66.39% of all cases with MSVI), followed by cataract (23.62%), age-related macular degeneration (1.31%) and glaucoma (1.09%). CONCLUSIONS: One-third of the global blind resided in South Asia in 2015, although the age-standardised prevalence of blindness and MSVI decreased significantly between 1990 and 2015.

Suraj Eye Institute, Nagpur, Maharashtra, India.

Full article

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Classification:

1.1 Epidemiology (Part of: 1 General aspects)
1.5 Glaucomas as cause of blindness (Part of: 1 General aspects)

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