Early Detection of Glaucoma Symptoms

Optical Coherence Tomograghy ​​(OCT) is a diagnostic tool that can provide similar histologic picture. Therefore, it can be used to assess the condition of the optic nerve in glaucoma papil. In addition, OCT can also be useful in monitoring progesivitas optic nerve damage.In this type of stratus OCT that uses a 820 nm, light is passed through optical fibers to a device or beam splitter beam splitter. Then directed to the retina and a reference mirror. Light rays enter the eye will be reflected by various layers of the retina. The distance between the beam splitter and reference mirror will vary continuously. When the distance between light source and the retina is the same as the distance light source and reference mirror, there will be interaction and generate referrals. Furthermore, the interference pattern is converted into a signal.The analog signal with the signal obtained on ultrasound, but usually not  sound wave signal, the picture that happening is like a piece sectional retinal histological features that can be presented in black and white or color images. In glaucoma diagnostic imaging done Retina Nerve Fiber Layer (RNFL) and Optic Nerve Head (ONH). Both imaging has been shown to distinguish normal eyes and glaucoma, but need further study because it still met the conditions that allow one interpretation.During this on  disease, visual field examination in patients considered the gold standard. In fact has been proved that the RNFL damage to some 40% will cause visual field abnormalities for the sufferer. In fact, he continued, ocular hypertension Study proves 55% of patients with hypertension into glaucoma optic did not have visual field abnormalities, but have structural abnormalities papil. Thus, identification of structural damage the optic nerve is important for detection and evaluation of progression of glaucoma.While only a complementary parameters of ONH RNFL parameters as a means of diagnosis of glaucoma. Stratus OCT machine can not give the normal price for ONH parameters as found in RNFL analysis. Still further research is needed to determine the validity of the analysis of ONH.