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Common Eye Diseases and their Management - part 4

Các yếu tố môi trường, đặc biệt là thuốc nhỏ mắt, make-up hoặc các cơ quan nước ngoài. • Nắp dính trong buổi sáng? • Đừng ngứa mắt? • cảm xúc căng thẳng hoặc bệnh tâm thần? Sau đây là một danh sách kiểm tra các nguyên nhân của viêm kết mạc mãn tính: | 62 Common Eye Diseases and their Management the inflammation should be noted and it is especially useful to note whether the deeper capillaries around the margin of the cornea are involved. The resulting pink flush encircling the cornea is called ciliary injection and is a warning of corneal or intraocular inflammation. For clinical purposes it is useful to divide conjunctivitis into acute and chronic types. Acute Conjunctivitis This is usually infective and caused by a bacterium it is more common in young people. It can spread rapidly through families or schools without serious consequence other than a few days incapacity. When adults develop acute conjunctivitis it is worth searching for a possible underlying cause especially a blocked tear duct if the condition is unilateral. Sometimes an ingrowing lash might be the cause or occasionally a free-floating eyelash lodges in the lacrimal punctum. The important symptoms of acute conjunctivitis are redness irritation and sticking together of the eyelids in the mornings. Management entails finding the cause and using antibiotic drops if the symptoms are severe enough to warrant this. However it must be remembered that the inadequate and intermittent use of antibiotic eye drops could simply encourage growth of resistant organisms. Chronic Conjunctivitis This is a common cause of the red eye and almost a daily problem in nonspecialised ophthalmic practice. If we consider that the conjunctiva is a mucous membrane that is exposed daily to the elements it is perhaps not surprising that after many years it tends to become chronically inflamed and irritable. The frequency and nuisance value of the symptoms are reflected in the large across-the-counter sales of various eyewashes and solutions aimed at relieving eyestrain or tired eyes . The symptoms of chronic conjunctivitis are therefore redness and irritation of the eyes with a minimal degree of discharge and sticking of the lids. If there is an allergic background itching .