{"id":4132,"date":"2025-04-18T14:08:47","date_gmt":"2025-04-18T10:38:47","guid":{"rendered":"https:\/\/mehr-eye-center.ir\/%d9%86%d8%a7%d8%ae%d9%86%d9%83\/"},"modified":"2025-11-26T08:01:31","modified_gmt":"2025-11-26T04:31:31","slug":"pterygium","status":"publish","type":"post","link":"https:\/\/mehr-eye-center.ir\/ms\/pterygium\/","title":{"rendered":"Pterygium"},"content":{"rendered":"\r\n
A pterygium is a triangular-shaped lesion that grows from the conjunctiva (the thin tissue on the white surface of the eye) towards the cornea. This lesion is caused by a benign growth of connective tissue and blood vessels in the conjunctiva.<\/p>\r\n
In the early stages, the pterygium appears as a white area and gradually progresses towards the center of the cornea. Due to the presence of many blood vessels, its color is usually pink or red.<\/p>\r\n\r\n\r\n\r\n
<\/p>\r\n
In some cases, the pterygium becomes so large that it advances to the middle of the cornea and blocks vision.<\/p>\r\n<\/li>\r\n<\/ul>\r\n\r\n\r\n\r\n
Ultraviolet (UV) radiation:<\/strong> prolonged exposure to the sun<\/p>\r\n Strong wind and dust:<\/strong> chronic eye irritation<\/p>\r\n Prevention:<\/strong> Wearing sunglasses and a brimmed hat is recommended for people who work or live in bright and dusty environments.<\/p>\r\n\r\n\r\n\r\n The main treatment for pterygium is surgery. However, in some cases, there is a possibility of its recurrence.<\/p>\r\n If only the lesion is removed during surgery and the surface underneath it is left uncovered, there is a possibility of recurrence in about 80% of cases. However, in new methods, the surface underneath the lesion is covered with connective tissue (graft) to reduce the possibility of recurrence.<\/p>\r\n\r\n\r\n\r\n 1. Conjunctival autograft surgery (CAG)<\/strong><\/p>\r\n In this method, a part of the patient’s own conjunctiva is separated from a healthy area and placed at the site of the lesion.<\/p>\r\n 2. Amniotic membrane surgery (AMT)<\/strong><\/p>\r\n This procedure uses amniotic membrane (the placenta of a newborn baby) that the doctor obtains from a tissue bank. This procedure is useful for covering the damaged area and reducing the chance of recurrence.<\/p>\r\n\r\n\r\n\r\n <\/p>\r\n","protected":false},"excerpt":{"rendered":" Pterygium A pterygium is a triangular-shaped lesion that grows from the conjunctiva (the thin tissue on the white surface of the eye) towards the cornea. This lesion is caused by a benign growth of connective tissue and blood vessels in the conjunctiva. In the early stages, the pterygium appears as a white area and gradually…<\/p>\n","protected":false},"author":1,"featured_media":4133,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[174,181],"tags":[],"class_list":["post-4132","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-174","category-181"],"yoast_head":"\nTreatment of pterygium<\/h2>\r\n\r\n\r\n\r\n
Pterygium surgery methods:<\/h3>\r\n\r\n\r\n\r\n