Eyelid disorders refer to a variety of conditions affecting the eyelids, which can impact vision and overall eye health. Common disorders include blepharitis, an inflammation of the eyelid margins, and ptosis, which is the drooping of the upper eyelid. These conditions can result from infections, allergies, or structural issues. Other eyelid disorders include chalazion, a blocked oil gland that causes swelling, and stye, a painful lump caused by bacterial infection. Treatment options vary depending on the disorder and may include warm compresses, medications, or surgical interventions to restore normal eyelid function and appearance.