Patients with mydriasis, also known as blepharitis, can eat seafood in moderation, but generally should not consume too much, as overconsumption may affect the recovery of blepharitis. Blepharitis is mainly an inflammation caused by bacterial infection of the eyelid glands, which is usually caused by the patient’s lack of attention to eye hygiene and excessive eye use. Seafood, including shrimp and fish, contains protein, minerals and other nutrients, and when eaten in moderation, it can replenish the body with certain nutrients and will not affect blepharitis. Since seafood is an allergenic food, overconsumption may lead to an allergic reaction, which may aggravate the inflammatory reaction of the eye and aggravate blepharitis, so patients should not consume seafood in excess. Patients with blepharitis are advised to seek prompt medical attention to evaluate their condition and to undergo treatment under the guidance of a doctor.