青光眼损伤形成精品课件.ppt

GLAUCOMA  QU BO 曲 勃 The 4th Affiliated Hospital of China Medical University Glaucoma: the concept Glaucoma is a group of diseases that can damage the eyes optic nerve and result in vision loss and blindness. However, with early treatment, you can often protect your eyes against serious vision loss. The damages are mostly caused by increased pressure of water-aqueous humor (房水）in the eye Who is most likely to get glaucoma?  You are more likely to get glaucoma if you: Have family members with glaucoma Are over 45 years of age Have poor vision Have diabetes（糖尿病） Take steroid medication（使用激素） Previous eye injury. Classification on Mechanism Closed-angle Glaucoma The drainage angle of trabecular meshwork becomes blocked by the iris IOP builds up very fast. Symptoms include severe eye or brow pain, redness of the eye,decreased or blurred vision. Must be treated as a medicalemergency—see your ophthalmologist immediately. Open Angle Glaucoma Trabecular meshwork becomes less efficient at draining aqueous humor. Intraocular pressure (IOP) builds up,which leads to damage of the optic nerve. Damage to the optic nerve occurs at different eye pressures among different patients. Typically, glaucoma has no symptoms in its early stages. Glaucoma: Symptoms How can I find out if I have glaucoma? A series of test performed by your eye doctor will help to determine whether you have glaucoma or likely to develop glaucoma. How is glaucoma treated? The purpose of treatment is to prevent further loss of vision. This is important because loss of vision due to glaucoma is irreversible. Will I go blind because of glaucoma? If glaucoma is left untreated, damage increases, which may eventually lead to blindness. How often should I get my eye examined Does diet, exercise, or changein behaviors help? Exercise may be beneficial as it : Lowers eye pressure Improves blood flow to the optic nerve. Avoid smoking or second-hand smoke. Tobacco can worsen the disease. Remember Treatm