Patient: No strength in eyelids, thymic tumor 2cm detected 8 days ago . A: If the eyelids are weak there should be a thymoma, not a layer of membrane. It is recommended to go to neurology for examination first. If diagnosed with myasthenia gravis, you need to take medicine to control the symptoms first after three months, you can open the chest or perform thymoma resection under thoracoscopy.