optic neuritis

例句：

1. 1. This disease is characterized by pain and inflammation in the optic nerve.
   这种疾病的特点是在视神经上出现疼痛和炎症。
2. 2.The patient was diagnosed with optic neuritis after a series of tests.
   经过一系列测试后，患者被诊断出患有视神经炎。
3. 3. Optic neuritis can be caused by various factors such as exposure to sunlight or infection.
   视神经炎可以由多种因素引起，如暴露于阳光或感染。