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Ocular hypotony is divided into statistical and clinical types. If intraocular pressure is low (less than 6.5 mm Hg) it is called statistical hypotony, and if the reduced IOP causes a decrease in vision, it is called clinical. [4]
Intraocular pressure laws follow fundamentally from physics. Any kinds of intraocular surgery should be done by considering the intraocular pressure fluctuation. Sudden increase of intraocular pressure can lead to intraocular micro barotrauma and cause ischemic effects and mechanical stress to retinal nerve fiber layer. Sudden intraocular ...
Ocular hypertension is treated with either medications (eye drops), surgery, or laser. Treatment, by lowering the intraocular pressure, may help decrease the risk of vision loss and damage to the eye from glaucoma. Treatment options include pressure-lowering 'antiglaucomatous' eye drops, surgery, and/or laser eye surgery. [4]
Over many years, glaucoma has been defined by an intraocular pressure of more than 20 mm Hg. Incompatible with this (now obsolete) definition of glaucoma was the ever larger number of cases that have been reported in medical literature in the 1980s and 1990s who had the typical signs of glaucomatous damage, like optic nerve head excavation and thinning of the retinal nerve fiber layer, while ...
Intraocular pressure rises up to 30 to 70 mm Hg. [3] The increased intraocular pressure may cause blurring of vision, headache, brow ache, nausea and/or vomiting. [2] The angle of anterior chamber is seen open with gonioscopy. [2]
Primary congenital glaucoma is a rare eye condition that is present at birth or develops early in childhood. It occurs due to improper drainage of the eye's fluids, which leads to increased pressure inside the eye, known as intraocular pressure.
Chronic intermittent hypoxia impairs endothelial function, reducing nitric oxide production, which leads to vasoconstriction and reduced blood flow to the optic nerve head. Additionally, fluctuations in pressure within the thoracic cavity during apnea episodes can alter intraocular pressure, affecting the blood supply to the optic nerve head .
Infantile glaucoma, which often produces the clinical sign of buphthalmos, can be caused when an abnormally narrow angle between the cornea and iris blocks the outflow of aqueous humor; [4] this causes increased intraocular pressure and eventual enlargement of the globe (eyeball).
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