advertisement

---

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)

---

Abstract #79947 Published in IGR 20-2

Age-related changes in eye morphology and aqueous humor dynamics in DBA/2J mice using contrast-enhanced ocular MRI

Crosbie DE; Keaney J; Tam LCS; Daniel Stamer W; Campbell M; Humphries P
Magnetic Resonance Imaging 2019; 59: 10-16

---

PURPOSE: Here, we are testing the hypothesis that dynamic contrast enhanced MRI (DCE-MRI) is a useful approach for non-invasively evaluating age-related changes in aqueous humor outflow and its contribution to elevated intraocular pressure in the DBA/2J model of pigmentary glaucoma. METHODS: A rodent-specific 7 T MRI was used to assess eye anatomy (anterior chamber (AC) and vitreous body (VB) morphology, eye size, lens size) and aqueous humor dynamics (via intravenous administration of Gd-DTPA and Gd-BOPTA contrast agents) in C57BL/6 and DBA/2J mice at 3 and 9 months of age. RESULTS: Gd-MRI was used to demonstrate an anterior solute pathway into the mouse AC. Topical latanoprost treatment in C57BL/6J mice reduced Gd-BOPTA accumulation in the AC. Age-related increases in AC area, AC depth and eye size were observed in DBA/2J mice compared to C57BL/6J mice. The rate of Gd-DTPA accumulation and peak Gd-DTPA intensity was lowest in 9-month old DBA/2J mice compared to 3-month old DBA/2J mice and C57BL/6J mice at both ages. Leakage of Gd-DTPA posteriorly into the VB was also observed in 9-month old DBA/2J mice. CONCLUSIONS: These studies support the idea that age-related changes in aqueous humor outflow contribute to elevated intraocular pressure (IOP) in the DBA/2J model of pigmentary glaucoma. Gd-MRI is a valuable tool for better understanding of mechanisms and dynamics of aqueous humor circulation in normal and glaucomatous mouse eyes or following topical administration of medicines to reduce IOP.

Ocular Genetics, Unit, Smurfit Institute of Genetics, Trinity College Dublin, Lincoln Place Gate, Dublin 2, Ireland.

Full article

---

Classification:

3.13.4 Other (Part of: 3 Laboratory methods > 3.13 In vivo imaging)
5.1 Rodent (Part of: 5 Experimental glaucoma; animal models)
2.6.2 Outflow (Part of: 2 Anatomical structures in glaucoma > 2.6 Aqueous humor dynamics)

---

• ← Previous
• Next →

---