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Ocular hypertension
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Ocular hypertension
Ocular hypertension is the presence of elevated fluid pressure inside the eye (intraocular pressure), usually with no optic nerve damage or visual field loss.
For most individuals, the normal range of intraocular pressure is between 10 mmHg and 21 mmHg. It is estimated that approximately 2-3% of people aged 52-89 years old have ocular hypertension of 25 mmHg and higher, and 3.5% of people 49 years and older have ocular hypertension of 21 mmHg and higher.
Elevated intraocular pressure is an important risk factor and symptom of glaucoma. Accordingly, most individuals with consistently elevated intraocular pressures of greater than 21mmHg, particularly if they have other risk factors, are treated in an effort to prevent vision loss from glaucoma.
One of the fluids inside the eye is called aqueous humor, and it contains 99% water and removes waste. Aqueous humor is transparent and thin, located in the anterior chamber, which is the area between the cornea and iris. Fluid should enter and exit the eye at appropriate rates to prevent fluid buildup, and when there is not appropriate fluid drainage, pressure builds up inside the eye. Fluid enters the eye through the ciliary body and exits the eye through the trabecular meshwork.
Whether macular surgery or vitrectomy contributes to an increased ocular hypertension is currently unknown. Research suggests that anti-VEGF drugs and infectious keratitis can elevate intraocular pressure.
The condition is diagnosed using ocular tonometry, which can involve pressing a device against the cornea to see how much its shape changes. Increased IOP without glaucomatous changes (in optic disc or visual field) is considered as ocular hypertension. Sometimes ocular hypertension goes undiagnosed because it can be asymptomatic. Other tools for diagnosis include patient history, pachymetry, and optic nerve imaging.
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.
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Ocular hypertension
Ocular hypertension is the presence of elevated fluid pressure inside the eye (intraocular pressure), usually with no optic nerve damage or visual field loss.
For most individuals, the normal range of intraocular pressure is between 10 mmHg and 21 mmHg. It is estimated that approximately 2-3% of people aged 52-89 years old have ocular hypertension of 25 mmHg and higher, and 3.5% of people 49 years and older have ocular hypertension of 21 mmHg and higher.
Elevated intraocular pressure is an important risk factor and symptom of glaucoma. Accordingly, most individuals with consistently elevated intraocular pressures of greater than 21mmHg, particularly if they have other risk factors, are treated in an effort to prevent vision loss from glaucoma.
One of the fluids inside the eye is called aqueous humor, and it contains 99% water and removes waste. Aqueous humor is transparent and thin, located in the anterior chamber, which is the area between the cornea and iris. Fluid should enter and exit the eye at appropriate rates to prevent fluid buildup, and when there is not appropriate fluid drainage, pressure builds up inside the eye. Fluid enters the eye through the ciliary body and exits the eye through the trabecular meshwork.
Whether macular surgery or vitrectomy contributes to an increased ocular hypertension is currently unknown. Research suggests that anti-VEGF drugs and infectious keratitis can elevate intraocular pressure.
The condition is diagnosed using ocular tonometry, which can involve pressing a device against the cornea to see how much its shape changes. Increased IOP without glaucomatous changes (in optic disc or visual field) is considered as ocular hypertension. Sometimes ocular hypertension goes undiagnosed because it can be asymptomatic. Other tools for diagnosis include patient history, pachymetry, and optic nerve imaging.
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.