ARETHA COETZEE OPTOMETRISTS
Your family eye care specialist……
Recommended for men and women over 60, the Glaucoma screen detects your risk for Glaucoma
The purpose of glaucoma screening tests is to detect those with early stage disease, so that these patients can be treated to reduce the risk of visual field loss. For patients with pre-perimetric glaucoma, screening tests are limited to the evaluation of the optic nerve and the NFL.
Age: age by itself is a risk factor. In the Baltimore Eye Studi, patients in their 70s had x 3.5 times the risk for developing glaucoma than those patients in their 40’s.
Race: Black individuals have 3-4 times more risk than whites to develop glaucoma; and Hispanics have 1-2 times more risk than whites to develop glaucoma. The cause of this race variation is unknown.
Intraocular Pressure (IOP): Increased intraocular pressure is a risk factor for the development of glaucoma. It should be taken into account that the IOP has a diurnal variation, and so even if one measurement is within the normal range, high peaks of IOP may still be present causing optic nerve damage. And so, it is recommended that the time of IOP measurement be recorded along with IOP. Most subjects have a peak of IOP during the night (because of the body position)
Family History: people with first degree relatives with glaucoma are at higher risk for developing glaucoma.
Corneal thickness: patients with thinner corneas have a greater risk for developing the disease (besides the influence on the IOP measurement). It has been thought that thinner corneas may be related to increased biomechanical susceptibility of the lamina cribrosa and peripapillary sclera.
Myopia and Diabetes Mellitus: they are thought to be related but no hard evidences exist yet to show a relation.