Open Angle Glaucoma
Primary open angle glaucoma (POAG) is the most common type of glaucoma. It happens when the eye’s drainage canals become clogged over time. The inner pressure of the eye (the intraocular pressure) rises because the correct amount of fluid can’t drain out of the eye. The blockage is not at the entrances to the drainage canal but further inside. Similar to a clogged pipe below the drain in a sink. This type of glaucoma usually responds well to treatment, especially if caught early.
Who is at risk of Glaucoma?
Everyone is at risk of Glaucoma. However certain groups are at higher risk than others. The following groups are at a higher risk of developing Glaucoma:
- Africans (six to eight times more common than in Caucasians)
- People over 60 years of age
- Family members with glaucoma (risk factor increases by four to nine times)
- Asians (primary angle closure glaucoma)
- Steroid users
- Those who have had eye injuries
Evaluation of glaucoma with OCT :
Laser eye centre introduces the latest in OCT with their new state of the art OCT machine
Optical coherence tomography (OCT) is a commonly used imaging modality in the evaluation of glaucoma damage to the eye. The latest technological advances in OCT offers benefits in glaucoma assessment over the earlier OCT due to increased resolution, faster speeds , reproducible registration, and imaging macular and optic nerve head regions.
The retinal nerve fibre layer and macular thickness parameters are now reproducible, and have a high diagnostic sensitivity and specificity in discriminating between healthy and glaucoma eyes .
Depending upon the type of glaucoma, treatment may include medication, usually prescription eye drops, or surgery (laser treatment or making a cut in the eye) to lower the pressure in the eye and prevent further damage to the optic nerve. While there is no cure as yet for glaucoma, early diagnosis and continuous treatment can preserve eye sight. If you fall under any of the above mentioned high risk categories, it is strongly advised that you get a full eye examination at least once a year. The eye examination should include measuring the intraocular pressure, an examination of the optic nerve and possibly a visual field test.