A chalazion is a small, painless bump on the eyelid caused by a blocked oil gland. Symptoms include swelling, tenderness, and a firm lump on the eyelid. It can sometimes lead to redness or discomfort if it presses on the eye. Causes include poor eyelid hygiene, chronic blepharitis, or Meibomian gland dysfunction. Treatment involves warm compresses to help the lump drain, good eyelid hygiene, and in some cases, steroid injections or surgical removal if it doesn’t resolve on its own. For more information, come to Dr. Maria's Eye Clinic in Saligramam, Chennai, near Vadapalani, Valasaravakkam, KK Nagar, and Virugambakkam. Check your eyes today—stay healthy,  stay positive!