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1 General aspects (0)   1.1 Epidemiology (3)   1.2 Population genetics (1)   1.3 Pathogenesis (3)   1.4 Quality of life (4)   1.5 Glaucomas as cause of blindness (2)   1.6 Prevention and screening (4) 2 Anatomical structures in glaucoma (1)   2.1 Conjunctiva (1)   2.2 Cornea (8)   2.3 Sclera (1)   2.4 Anterior chamber angle (0)   2.5 Meshwork (0)     2.5.1 Trabecular meshwork (12)     2.5.2 Schlemms canal (1)     2.5.3 Scleral outlet channels (0)   2.6 Aqueous humor dynamics (3)     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 (2)   2.7 Episcleral veins and venous pressure (0)   2.8 Iris (0)   2.9 Ciliary body (3)   2.10 Lens (0)   2.11 Vitreous body (0)   2.12 Choroid, peripapillary choroid, peripapillary atrophy (0)   2.13 Retina and retinal nerve fibre layer (11)   2.14 Optic disc (5)   2.15 Optic nerve (2)   2.16 Chiasma and retrochiasmal central nervous system (2)   2.17 Stem cells (0)   2.20 Other (0) 3 Laboratory methods (8)   3.1 Microscopy (2)   3.2 Electron microscopy (0)   3.3 Immunohistochemistry (13)   3.4 Molecular genetics (0)     3.4.1 Linkage studies (10)     3.4.2 Gene studies (4)   3.5 Molecular biology incl. SiRNA (0)   3.6 Cellular biology (4)   3.7 Biochemistry (0)   3.8 Pharmacology (1)   3.9 Pathophysiology (1)   3.10 Immunobiology (2)   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 (1) 4 Tissue culture of ocular cells (0) 5 Experimental glaucoma; animal models (29)   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 (25)     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) (2)   6.3 Biomicroscopy (slitlamp) (0)     6.3.1 Anterior segment (0)     6.3.2 Posterior segment (0)   6.4 Gonioscopy (4)   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 (4)     6.6.3 Special methods (e.g. color, contrast, SWAP etc.) (12)   6.7 Electro-ophthalmodiagnosis (3)   6.8 Photography (0)     6.8.1 Anterior segment (0)     6.8.2 Posterior segment (3)   6.9 Computerized image analysis (0)     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 (0)   6.10 Fluorescein (ICG) angiography (0)     6.10.1 Anterior segment (0)     6.10.2 Posterior segment (1)   6.11 Bloodflow measurements (8)   6.12 Ultrasonography and ultrasound biomicroscopy (5)   6.13 Provocative tests (0)   6.19 Telemedicine (1)   6.20 Progression (5)   6.30 Other (1) 8 Refractive errors in relation to glaucoma (0)   8.1 Myopia (2)   8.2 Hypermetropia (0)   8.3 Contact lenses (0)   8.4 Refractive surgical procedures (7)   8.5 Other (0) 9 Clinical forms of glaucomas (0)   9.1 Developmental glaucomas (2)     9.1.1 Congenital glaucoma, Buphthalmos (0)     9.1.2 Juvenile glaucoma (0)     9.1.3 Syndromes of Axenfeld, Rieger, Peters, aniridia (6)     9.1.4 Other (1)   9.2 Primary open angle glaucomas (0)     9.2.1 Ocular hypertension (3)     9.2.2 Other risk factors for glaucoma (5)     9.2.3 Open angle glaucoma with elevated IOP (0)     9.2.4 Normal pressure glaucoma (4)   9.3 Primary angle closure glaucomas (1)     9.3.1 Acute primary angle closure glaucoma (pupillary block) (1)     9.3.2 Chronic primary angle closure glaucoma (pupillary block) (2)     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 (0)     9.4.1 Steroid-induced glaucoma (0)     9.4.2 Glaucomas associated with disorders of the cornea, conjunctiva, sclera (0)       9.4.2.1 Iridocorneal endothelial syndrome (ICE, incl. irisatrophy) (0)       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 (2)       9.4.3.5 Other (0)     9.4.4 Glaucomas associated with disorders of the lens (0)       9.4.4.1 Exfoliation syndrome (7)       9.4.4.2 Glaucomas associated with cataracts (1)       9.4.4.3 Glaucomas associated with lens dislocation (0)       9.4.4.5 Other (0)     9.4.5 Glaucomas associated with disorders of the retina, choroid and vitreous (0)       9.4.5.1 Neovascular glaucoma (2)       9.4.5.5 Other (0)     9.4.6 Glaucomas associated with inflammation, uveitis (5)     9.4.7 Glaucomas associated with ocular trauma (1)     9.4.8 Glaucomas associated with intraocular tumors (0)     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 (1)       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 (2)     9.4.15 Glaucoma in relation to systemic disease (5)     9.4.20 Other (0) 10 Differential diagnosis e.g. anterior and posterior ischemic optic neuropathy (6) 11 Medical treatment (0)   11.1 General management, indication (8)   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 (0)     11.3.4 Betablocker (12)     11.3.5 Other (0)   11.4 Prostaglandins (31)   11.5 Carbonic anhydrase inhibitors (0)     11.5.1 Systemic (0)     11.5.2 Topical (5)   11.6 Osmotic treatment (0)   11.7 Treatment of bloodflow (3)   11.8 Neuroprotection (1)   11.9 Gene therapy (0)   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 (15)   11.15 Other drugs in relation to glaucoma (4)   11.16 Vehicles, delivery systems, pharmacokinetics, formulation (1)   11.17 Cooperation with medical therapy e.g. persistency, compliance, adherence (3)   11.20 Other (1) 12 Surgical treatment (0)   12.1 General management, indication (4)   12.2 Laser iridotomy (3)   12.3 Laser iridoplasty (0)   12.4 Laser trabeculoplasty and other laser treatment of the angle (2)   12.7 Surgical iridectomy (0)   12.8 Filtering surgery (0)     12.8.1 Without tube implant (9)     12.8.2 With tube implant or other drainage devices (12)     12.8.3 Non-perforating (6)     12.8.4 Using laser (0)     12.8.5 Other (0)     12.8.10 Woundhealing antifibrosis (10)     12.8.11 Complications, endophthalmitis (8)   12.9 Trabeculotomy, goniotomy (1)   12.10 Cyclodestruction (3)   12.11 Cyclodialysis (0)   12.12 Cataract extraction (0)     12.12.1 Intracapsular (0)     12.12.2 Extracapsular (0)     12.12.3 Phacoemulsification (12)   12.14 Combined cataract extraction and glaucoma surgery (0)     12.14.1 Intracapsular (0)     12.14.2 Extracapsular (1)     12.14.3 Phacoemulsification (7)   12.15 Capsulotomy (0)   12.16 Vitrectomy (0)   12.17 Anesthesia (0)   12.20 Other (6) 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 (5) 15 Miscellaneous (10)

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Abstract #12402 Published in IGR 7-2

Distribution of intraocular pressure in healthy Iranian individuals: the Tehran Eye Study

Hashemi H; Kashi AH; Fotouhi A; Mohammad K
British Journal of Ophthalmology 2005; 89: 652-657

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AIM: To provide data on the distribution of intraocular pressure (IOP) in an Iranian population. METHODS: Through a population based, cross sectional study, 4565 Tehran citizens were studied in the Tehran Eye Study. The findings from the participants (n = 3834) aged 10 years and older free of glaucoma diagnosis or suspicion who had undergone applanation tonometry examination are presented. All participants received a standardised protocol including applanation tonometry, fundus examination, demographic data, and an interview. IOP measurement was used to evaluate its distribution by age, sex, and some eye parameters. RESULTS: Mean (SD) IOP was 14.5 (2.6) mmHg in the total population, 14.4 (2.7) in men, and 14.5 (2.5) in women. Mean (SD) IOP in people ≥ 40 years was 15.1 (2.9) mmHg. IOP increased significantly with age and cup:disc ratio except for a fall in old age. This relation was also observed when individuals without diabetes or hypertension history were analysed. IOP increased with darker eye pigmentation except for blue/grey eyes. There was a non-linear increase in IOP from emmetropic to high myopic eyes. CONCLUSION: Age, iris colour, and cup:disc ratio were related to IOP but not to sex. The distribution of IOP in this study was different from various other studies in different geographical regions and it seems advisable to employ a geographical approach to normal IOP interpretation.

Dr. H. Hashemi, Farabi Eye Hospital and School of Medicine, Tehran University of Medical Sciences, Tehran, Iran

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Classification:

1.1 Epidemiology (Part of: 1 General aspects)

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