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1 General aspects (0)   1.1 Epidemiology (8)   1.2 Population genetics (0)   1.3 Pathogenesis (1)   1.4 Quality of life (13)   1.5 Glaucomas as cause of blindness (4)   1.6 Prevention and screening (9) 2 Anatomical structures in glaucoma (0)   2.1 Conjunctiva (10)   2.2 Cornea (19)   2.3 Sclera (7)   2.4 Anterior chamber angle (7)   2.5 Meshwork (0)     2.5.1 Trabecular meshwork (15)     2.5.2 Schlemms canal (5)     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 (6)       2.6.2.2 Uveoscleral (0)     2.6.3 Compostion (9)   2.7 Episcleral veins and venous pressure (0)   2.8 Iris (5)   2.9 Ciliary body (2)   2.10 Lens (0)   2.11 Vitreous body (1)   2.12 Choroid, peripapillary choroid, peripapillary atrophy (6)   2.13 Retina and retinal nerve fibre layer (38)   2.14 Optic disc (36)   2.15 Optic nerve (4)   2.16 Chiasma and retrochiasmal central nervous system (14)   2.17 Stem cells (4)   2.20 Other (0) 3 Laboratory methods (0)   3.1 Microscopy (2)   3.2 Electron microscopy (0)   3.3 Immunohistochemistry (1)   3.4 Molecular genetics (0)     3.4.1 Linkage studies (2)     3.4.2 Gene studies (20)   3.5 Molecular biology incl. 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Anterior segment (0)     6.3.2 Posterior segment (1)   6.4 Gonioscopy (5)   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 (32)     6.6.3 Special methods (e.g. color, contrast, SWAP etc.) (16)   6.7 Electro-ophthalmodiagnosis (10)   6.8 Photography (0)     6.8.1 Anterior segment (0)     6.8.2 Posterior segment (18)   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 (6)       6.9.2.2 Posterior (92)     6.9.5 Other (1)   6.10 Fluorescein (ICG) angiography (0)     6.10.1 Anterior segment (0)     6.10.2 Posterior segment (0)   6.11 Bloodflow measurements (36)   6.12 Ultrasonography and ultrasound biomicroscopy (8)   6.13 Provocative tests (1)   6.19 Telemedicine (3)   6.20 Progression (26)   6.30 Other 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disorders (0)     9.4.1 Steroid-induced glaucoma (8)     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 (1)       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 (2)       9.4.3.5 Other (1)     9.4.4 Glaucomas associated with disorders of the lens (0)       9.4.4.1 Exfoliation syndrome (27)       9.4.4.2 Glaucomas associated with cataracts (3)       9.4.4.3 Glaucomas associated with lens dislocation (0)       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 (7)       9.4.5.5 Other (11)     9.4.6 Glaucomas associated with inflammation, uveitis (12)     9.4.7 Glaucomas associated with ocular trauma (2)     9.4.8 Glaucomas associated with intraocular tumors (2)     9.4.9 Glaucomas associated with elevated episcleral venous pressure (2)       9.4.10 Glaucomas associated with hemorrhage (12)     9.4.11 Glaucomas following intraocular surgery (1)       9.4.11.1 Ciliary block (malignant) glaucoma (1)       9.4.11.2 Glaucomas in aphakia and pseudophakia (11)       9.4.11.3 Epithelial, fibrous, and endothelial proliferation (0)       9.4.11.4 Glaucomas associated with corneal surgery (8)       9.4.11.5 Glaucomas associated with vitreoretinal surgery (2)     9.4.15 Glaucoma in relation to systemic disease (57)     9.4.20 Other (1) 10 Differential diagnosis e.g. anterior and posterior ischemic optic neuropathy (7) 11 Medical treatment (0)   11.1 General management, indication (10)   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 (1)     11.3.5 Other (0)   11.4 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Filtering surgery (0)     12.8.1 Without tube implant (23)     12.8.2 With tube implant or other drainage devices (84)     12.8.3 Non-perforating (10)     12.8.4 Using laser (0)     12.8.5 Other (10)     12.8.10 Woundhealing antifibrosis (12)     12.8.11 Complications, endophthalmitis (26)   12.9 Trabeculotomy, goniotomy (27)   12.10 Cyclodestruction (11)   12.11 Cyclodialysis (1)   12.12 Cataract extraction (1)     12.12.1 Intracapsular (0)     12.12.2 Extracapsular (0)     12.12.3 Phacoemulsification (8)   12.14 Combined cataract extraction and glaucoma surgery (0)     12.14.1 Intracapsular (0)     12.14.2 Extracapsular (1)     12.14.3 Phacoemulsification (31)   12.15 Capsulotomy (0)   12.16 Vitrectomy (4)   12.17 Anesthesia (2)   12.20 Other (3) 13 Therapeutic prognosis and outcome (0)   13.1 Prognostic factors (10)   13.2 Outcome (0)     13.2.1 IOP (1)     13.2.2 Visual field (1)       13.2.2.1 Progression (1)       13.2.2.2 Improvement (0)     13.2.3 Other (0) 14 Costing studies; pharmacoeconomics (4) 15 Miscellaneous (36)

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Abstract #89958 Published in IGR 21-3

Corneal Hysteresis as a Biomarker of Glaucoma: Current Insights

Zimprich L; Diedrich J; Bleeker A; Bleeker A; Bleeker A; Schweitzer JA
Clinical Ophthalmology 2020; 14: 2255-2264

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The diagnosis and management of glaucoma has long been dependent on making decisions based on family history, optic nerve head evaluation, intraocular pressure, visual field testing, and optical coherence testing. Other pieces to aid in understanding glaucoma have presented throughout the years, including the role of corneal thickness. The discussion and debate on the mechanism of glaucoma have been attributed to resistance at the level of the conventional outflow pathway, perfusion pressure to the optic nerve head, cerebral spinal fluid pressure, and many more. Another piece that has emerged is corneal hysteresis, an assessment of the cornea's ability to absorb and dissipate energy. There is abundant published literature supporting corneal hysteresis being associated with the presence and severity of glaucoma, the structural and functional progression of glaucoma, and the conversion to glaucoma. The supported data in these studies add another piece, corneal hysteresis, to consider in the diagnosis and management of glaucoma.

Vance Thompson Vision, Sioux Falls, SD 57108, USA.

Full article

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Classification:

2.2 Cornea (Part of: 2 Anatomical structures in glaucoma)

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