Evaluation of Gonioscopy-Assisted Transluminal Trabeculotomy Results in Patients with Open Angle Glaucoma
Project no. 22201 · Status: Kapanmış · 2020
Summary
<p>Intraocular pressure (IOP) is the tension created by the aqueous humor filling the anterior and posterior chambers against the cornea and sclera. The distribution of normal IOP in the population is between 11-21 mmHg. Although there is no pathological upper limit, 21 mmHg is seen as the upper limit of normal and values above this level are regarded with suspicion. It is difficult to define glaucoma precisely because it encompasses so many different disorders. There is a common and potentially progressive characteristic optic neuropathy (glaucomatous optic disc) in all forms of the disease. (1,2) Optic neuropathy is associated with visual field loss as the damage progresses, and IOP is often the only variable that can alter the course of the disease. Many methods can be used in the classification of glaucoma. The aqueous fluid is formed when the plasma filtrate in the stroma of the ciliary body passes through the blood-aqueous barrier. This formed fluid passes from the posterior chamber to the anterior chamber through the pupil, and from there, we can classify glaucoma in three parts as primary, secondary and congenital in the classification most commonly used today. Primary and secondary causes can also be open-angle or closed-angle depending on the anterior chamber angle configuration. Primary open-angle glaucoma is the most common type of glaucoma in the community and is also known as chronic simple glaucoma. It is a usually bilateral, adult-onset disease characterized by IOP>21 mmHg at any time, glaucomatous optic nerve damage, open anterior chamber angle, characteristic visual field loss, absence of secondary glaucoma findings and non-glaucoma causes for optic neuropathy. In open-angle glaucoma, aqueous outflow may also be obstructed due to secondary causes.(1)</p>