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[Intraocular pressure and optic nerve damages in monocular early glaucoma: a comparative study of primary open angle glaucoma and low tension glaucoma]. 1992

R Y Chen
Department of Ophthalmology, First Teaching Hospital, Beijing Medical University.

The correlation of intraocular pressure (IOP) to optic nerve damages was studied in 17 patients of primary open angle glaucoma (POAG) and 24 patients of low tension glaucoma (LTG) both with monocular early glaucomatous damages. In the POAG group, the mean IOP was higher in the glaucomatous eye than in the other, while in the LTG group there was no significant IOP difference between the two eyes. Comparing the optic nerve damages in both groups, patients of POAG presented a concentrically enlarged cup with even disc rim and diffuse retinal nerve fiber layer defect (RNFLD), while patients of LTG exhibited a paracentrical cup with uneven disc rim and localized RNFLD. The results suggested that there could be different mechanisms of optic nerve damages in the two groups.

UI MeSH Term Description Entries
D007429 Intraocular Pressure The pressure of the fluids in the eye. Ocular Tension,Intraocular Pressures,Ocular Tensions,Pressure, Intraocular,Pressures, Intraocular,Tension, Ocular,Tensions, Ocular
D009412 Nerve Fibers Slender processes of NEURONS, including the AXONS and their glial envelopes (MYELIN SHEATH). Nerve fibers conduct nerve impulses to and from the CENTRAL NERVOUS SYSTEM. Cerebellar Mossy Fibers,Mossy Fibers, Cerebellar,Cerebellar Mossy Fiber,Mossy Fiber, Cerebellar,Nerve Fiber
D009898 Optic Disk The portion of the optic nerve seen in the fundus with the ophthalmoscope. It is formed by the meeting of all the retinal ganglion cell axons as they enter the optic nerve. Blind Spot,Optic Disc,Optic Nerve Head,Optic Papilla,Blind Spots,Disc, Optic,Disk, Optic,Head, Optic Nerve,Nerve Head, Optic,Optic Discs,Optic Disks,Optic Nerve Heads,Optic Papillas,Papilla, Optic,Papillas, Optic,Spot, Blind
D012160 Retina The ten-layered nervous tissue membrane of the eye. It is continuous with the OPTIC NERVE and receives images of external objects and transmits visual impulses to the brain. Its outer surface is in contact with the CHOROID and the inner surface with the VITREOUS BODY. The outer-most layer is pigmented, whereas the inner nine layers are transparent. Ora Serrata
D005902 Glaucoma, Open-Angle Glaucoma in which the angle of the anterior chamber is open and the trabecular meshwork does not encroach on the base of the iris. Glaucoma Simplex,Glaucoma, Pigmentary,Glaucoma, Simple,Open-Angle Glaucoma,Chronic Primary Open Angle Glaucoma,Glaucoma, Compensated,Glaucoma, Compensative,Glaucoma, Open Angle,Glaucoma, Primary Open Angle,Glaucoma, Secondary Open Angle,Primary Open Angle Glaucoma,Secondary Open Angle Glaucoma,Compensated Glaucoma,Compensative Glaucoma,Open Angle Glaucoma,Open Angle Glaucomas,Open-Angle Glaucomas,Pigmentary Glaucoma,Simple Glaucoma,Simplex, Glaucoma,Simplices, Glaucoma
D006801 Humans Members of the species Homo sapiens. Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man

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