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1 General aspects (0)   1.1 Epidemiology (0)   1.2 Population genetics (0)   1.3 Pathogenesis (0)   1.4 Quality of life (0)   1.5 Glaucomas as cause of blindness (0)   1.6 Prevention and screening (0) 2 Anatomical structures in glaucoma (0)   2.1 Conjunctiva (0)   2.2 Cornea (0)   2.3 Sclera (0)   2.4 Anterior chamber angle (0)   2.5 Meshwork (0)     2.5.1 Trabecular meshwork (0)     2.5.2 Schlemms canal (0)     2.5.3 Scleral outlet channels (0)   2.6 Aqueous humor dynamics (0)     2.6.1 Production (0)     2.6.2 Outflow (0)       2.6.2.1 Trabecular meshwork (0)       2.6.2.2 Uveoscleral (0)     2.6.3 Compostion (0)   2.7 Episcleral veins and venous pressure (0)   2.8 Iris (0)   2.9 Ciliary body (0)   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 (0)   2.14 Optic disc (0)   2.15 Optic nerve (0)   2.16 Chiasma and retrochiasmal central nervous system (0)   2.17 Stem cells (0)   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 (0)   3.5 Molecular biology incl. SiRNA (0)   3.6 Cellular biology (0)   3.7 Biochemistry (0)   3.8 Pharmacology (0)   3.9 Pathophysiology (0)   3.10 Immunobiology (0)   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 (0)   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 (0)     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) (0)   6.3 Biomicroscopy (slitlamp) (0)     6.3.1 Anterior segment (0)     6.3.2 Posterior segment (0)   6.4 Gonioscopy (0)   6.5 Ophthalmoscopy (0)   6.6 Visual field examination and other visual function tests (0)     6.6.1 Conventional manual (0)     6.6.2 Automated (0)     6.6.3 Special methods (e.g. color, contrast, SWAP etc.) (0)   6.7 Electro-ophthalmodiagnosis (0)   6.8 Photography (0)     6.8.1 Anterior segment (0)     6.8.2 Posterior segment (0)   6.9 Computerized image analysis (0)     6.9.1 Laser scanning (0)       6.9.1.1 Confocal Scanning Laser Ophthalmoscopy (0)       6.9.1.2 Confocal Scanning Laser Polarimetry (0)     6.9.2 Optical coherence tomography (0)       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 (0)   6.11 Bloodflow measurements (0)   6.12 Ultrasonography and ultrasound biomicroscopy (0)   6.13 Provocative tests (0)   6.19 Telemedicine (0)   6.20 Progression (0)   6.30 Other (0) 8 Refractive errors in relation to glaucoma (0)   8.1 Myopia (0)   8.2 Hypermetropia (0)   8.3 Contact lenses (0)   8.4 Refractive surgical procedures (0)   8.5 Other (0) 9 Clinical forms of glaucomas (0)   9.1 Developmental glaucomas (0)     9.1.1 Congenital glaucoma, Buphthalmos (0)     9.1.2 Juvenile glaucoma (0)     9.1.3 Syndromes of Axenfeld, Rieger, Peters, aniridia (0)     9.1.4 Other (0)   9.2 Primary open angle glaucomas (0)     9.2.1 Ocular hypertension (0)     9.2.2 Other risk factors for glaucoma (0)     9.2.3 Open angle glaucoma with elevated IOP (0)     9.2.4 Normal pressure glaucoma (0)   9.3 Primary angle closure glaucomas (0)     9.3.1 Acute primary angle closure glaucoma (pupillary block) (0)     9.3.2 Chronic primary angle closure glaucoma (pupillary block) (0)     9.3.3 Plateau iris syndrome (0)     9.3.4 Primary angle closure suspect (0)     9.3.5 Primary angle closure (0)     9.3.10 Other (0)   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 (0)       9.4.3.5 Other (0)     9.4.4 Glaucomas associated with disorders of the lens (0)       9.4.4.1 Exfoliation syndrome (0)       9.4.4.2 Glaucomas associated with cataracts (0)       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 (0)       9.4.5.5 Other (0)     9.4.6 Glaucomas associated with inflammation, uveitis (0)     9.4.7 Glaucomas associated with ocular trauma (0)     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 (0)       9.4.11.2 Glaucomas in aphakia and pseudophakia (0)       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 (0)     9.4.20 Other (0) 10 Differential diagnosis e.g. anterior and posterior ischemic optic neuropathy (0) 11 Medical treatment (0)   11.1 General management, indication (0)   11.2 Cholinergic drugs (0)   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 (0)     11.3.5 Other (0)   11.4 Prostaglandins (0)   11.5 Carbonic anhydrase inhibitors (0)     11.5.1 Systemic (0)     11.5.2 Topical (0)   11.6 Osmotic treatment (0)   11.7 Treatment of bloodflow (0)   11.8 Neuroprotection (0)   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 (0)   11.15 Other drugs in relation to glaucoma (0)   11.16 Vehicles, delivery systems, pharmacokinetics, formulation (0)   11.17 Cooperation with medical therapy e.g. persistency, compliance, adherence (0)   11.20 Other (0) 12 Surgical treatment (0)   12.1 General management, indication (0)   12.2 Laser iridotomy (0)   12.3 Laser iridoplasty (0)   12.4 Laser trabeculoplasty and other laser treatment of the angle (0)   12.7 Surgical iridectomy (0)   12.8 Filtering surgery (0)     12.8.1 Without tube implant (0)     12.8.2 With tube implant or other drainage devices (0)     12.8.3 Non-perforating (0)     12.8.4 Using laser (0)     12.8.5 Other (0)     12.8.10 Woundhealing antifibrosis (0)     12.8.11 Complications, endophthalmitis (0)   12.9 Trabeculotomy, goniotomy (0)   12.10 Cyclodestruction (0)   12.11 Cyclodialysis (0)   12.12 Cataract extraction (0)     12.12.1 Intracapsular (0)     12.12.2 Extracapsular (0)     12.12.3 Phacoemulsification (0)   12.14 Combined cataract extraction and glaucoma surgery (0)     12.14.1 Intracapsular (0)     12.14.2 Extracapsular (0)     12.14.3 Phacoemulsification (0)   12.15 Capsulotomy (0)   12.16 Vitrectomy (0)   12.17 Anesthesia (0)   12.20 Other (0) 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 (0) 15 Miscellaneous (652)

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Abstract #96356 Published in IGR 22-3

Comparison among TonoVet, TonoVet Plus, Tono-Pen Avia Vet, and Kowa HA-2 portable tonometers for measuring intraocular pressure in dogs

Passareli JVGC; Nascimento FF; Estanho GJG; Ricci CL; Kanashiro GP; Giuffrida R; Andrade SF
Veterinary world 2021; 14: 2444-2451

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BACKGROUND AND AIM: Tonometers are an important instrument for measuring intraocular pressure (IOP) in the diagnosis of glaucoma or uveitis. This study aimed to compare the accuracy of the main types of tonometers with different IOP measurement methodologies in dogs: TonoVet and TonoVet Plus (rebound), Tono-Pen Avia Vet (applanation), and Kowa HA-2 (Goldmann applanation). MATERIALS AND METHODS: IOP was measured in 152 eyes of 76 dogs. A postmortem study was performed by comparing manometry and tonometry values and calculating the correlation coefficient (r), real IOP (manometry) among the tonometers was compared, and an outpatient study was conducted with healthy eyes and eyes with signs of glaucoma and uveitis. RESULTS: In the postmortem study, the values of r in descending order were Kowa (0.989), TonoVet Plus (0.984), TonoVet (0.981), and Tono-Pen Avia Vet (0.847). The IOP values in mmHg in the study were as follows: Aneroid manometer (16.8±2.5.7), TonoVet (18.1±2.9), TonoVet Plus (20.6±2.3), Tono-Pen Avia Vet (17.1±2.5), and Kowa (16.1±1.7); in outpatient clinics: TonoVet (16.8±3.8), TonoVet Plus (19.2±2.9), Tono-Pen Avia Vet (16.2±2.4), and Kowa (15.0±1.3); glaucoma: TonoVet (30.2±3.5), TonoVet Plus (35.0±6.1), Tono-Pen Avia Vet (29.5±4.2), and Kowa (23.9±5.0); and uveitis: TonoVet (14.2±1.4), TonoVet Plus (17.6±1.9), Tono-Pen Avia Vet (13.7±2.1), and Kowa (12.6±1.7) CONCLUSION: There was a strong correlation between IOP values and manometry in all the tonometers. The highest values were obtained with TonoVet Plus and the lowest with Kowa HA-2. All tonometers accurately measured IOP in dogs, including the latest TonoVet Plus, which showed an excellent correlation coefficient.

Postgraduate Program in Animal Science, UNOESTE, Presidente Prudente, São Paulo, Brazil.

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Classification:

15 Miscellaneous

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