Glaucoma is defined as a condition with intraocular pressure(IOP) >20 mm/Hg or IOP asymmetry between fellow eyes >2 with one or all of the following features.
1) A definite notch in the neuroretinal rim (a defect of at least 1 disc unit for a circumferential extent of less than 2 clock hours), or
2) Absence of neuroretinal rim not due to optic neuritis, anterior ischemic optic neuropathy, giant cell arteritis or other known cause, or
3) A difference in C/D ratio of >2, or
4) A difference in DDLS >1 which cannot be explained by anisometropia or other nonglaucomatous reason.
Note that this disc change must fit with a definite visual field defect, that is,
1) At least 3 contiguous points depressed by at least 5 dB,
2) A pattern of loss corresponding to a nerve fiber bundle type of defect.
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Glaucoma is one kind of eye problem which can cause cloudy vision by which sufferer can't see properly. If they can't get treatment then they can loss their eye.
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