Showing posts with label Ocular hypertension. Show all posts
Showing posts with label Ocular hypertension. Show all posts

Saturday, November 27, 2010

High Blood Pressure

High blood pressure (hypertension) or hypertension means high pressure (tension) in the arteries. Arteries are the vessels that carry blood from the heart pumping all tissues and organs in the body. High blood pressure does not mean excessive emotional tension, although emotional tension and stress can temporarily increase blood pressure. Normal blood pressure is less than 120 on high level and 80 minimum; blood pressure between 120 and 80 and 139 / 89 is called "prehypertension"and a blood pressure of 140 and 90 or higher is considered high.

The top number, systolic pressure, represents the pressure in the arteries as the heart contracts and pumps blood forward into the arteries. The bottom number, diastolic pressure, represents the pressure in the arteries as the heart relaxes after contraction. The diastolic pressure reflects the lowest pressure at which the arteries are exposed.


Causes Of High Blood Pressure :

There are two forms of hypertension: essential (or commonly primary) hypertension and secondary hypertension. Essential hypertension is a condition which is much more common and accounts for 95% of hypertension. The cause of essential hypertension is multi factorial, that is, there are several factors whose combined effects are of hypertension. In secondary hypertension, accounting for almost 5% of hypertension, hypertension is secondary to (OR caused by) a specific abnormality in one of the organs or body systems. (secondary hypertension is discussed in a separate section).
Essential hypertension affects approximately 70+ millions Americans, but its basic causes or underlying defects are not always known. Nevertheless, some associations have been detected in people with essential hypertension

Symptoms Of High Blood Pressure :

Hypertension usually occurs without symptoms (silent) and if hypertension has been called "the silent killer. " It is so named because the disease can progress and eventually develop one or more of the many life-threatening complications of hypertension such as heart attacks or strokes. Uncomplicated hypertension may be present and remain undetected for many years, even decades. What happens when there are no symptoms are found, and those affected then fails to undergo periodic screening for high blood pressure.
Some of the important symptoms of high blood pressure are headache, feeling shorter breath, feeling blur in vision ( blurred vision ) etc.

Saturday, May 8, 2010

Glaucoma

Glaucoma is the disease of eye in which the major optic nerve is damaged, which cause loss of vision or sometimes the victim becomes fully blind from eyes. Most of the victims only loss their vision but there are rare cases of blindness. It is second leading cause of blindness after Strabismus.
In America there are more than 300,000 people facing glaucoma, much of the people do not even know that they are facing glaucoma problem because it is not much noticeable.

Symptoms Of Glaucoma :

There are two categories of Glaucoma, one is OPEN ANGLE and the other one is CLOSED ANGLE. Where Open Angle grows slowly and the patient can not feel that he/she has lost eye sight, until glaucoma processed significantly.
Where as Closed Angle grows rapidly and it is often painful, Once the vision of victim is damaged it can not be recovered, Closed Angle Glaucoma is an ophthalmologic emergency.

Causes Of Glaucoma :

Eye of human being is maintained with the pressure which is known as Intraocular pressure, which normally ranges between 8 millimeters and 22 millimeters of mercury, when this pressure lows the eye becomes softer and when it increases eye becomes harder than normal, and through this up and downing of pressure the fibers in the nerve are easily damaged and this is the main cause.
The other cause of Glaucoma is the increased pressure with in the eye, which is also known as Ocular hypertension. Those people who are suffering from myopia are at high risk of getting caught with glaucoma disease.

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