What is it?
Glaucoma can be defined as a lesion on the optic nerve, of progressive nature, with loss of visual field and risk of blindness if diagnosis and treatment are not performed in time. It is directly related to the intraocular pressure (IOP) in such a way that the majority of people with glaucoma have elevated IOP.
Aqueous humor, a fluid which exists in the anterior segment of the eye, circulates constantly to provide nutrition to the cornea, crystalline lens and trabecular meshwork. When glaucoma is present, there is less aqueous humor circulation in the trabecular region, which increases the IOP.
Narrow-angle glaucoma can, occasionally, cause symptoms, such as pinched pain in the eye associated to eye redness, temporary blurry vision and perception of colorful halos around light sources. Open-angle glaucoma, most of the time, evolves slowly, not noticeable to the patient. Early diagnostic is only possible as the patients are submitted to preventive ophthalmologic examination.
The damage caused by glaucoma can become irreversible blindness. This is the reason why prevention is still the best solution: when the disease is discovered early, smaller will be the lesion on the optic nerve and greater will be the chance to control the glaucoma.