Eyes like a layer of gray skin still grinding pain may be caused by overuse of eyes, pterygium, allergic conjunctivitis and other reasons. 1. Excessive eye use: If the patient’s eyes are tired due to excessive eye use, it will cause the eyes to feel like a layer of gray skin and still grinding pain. 2. Pterygium: As the conjunctiva or subconjunctival tissues proliferate and thicken to form fibrovascular tissues, resulting in the appearance of pterygium in the eye, as it grows, it may obscure the pupil. As it grows, it may block the pupil. Thus, the eyes appear as if they have a layer of gray skin that still rubs painfully. 3. Allergic conjunctivitis: allergens such as dust, feathers, pollen and other allergens lead to itchy eyes and sticky secretions in the eyes, resulting in the phenomenon of the eyes looking like a layer of gray skin and grinding pain. Eyes like a layer of gray skin also grinding pain may also be related to keratitis, corneal foreign body and other causes. If the patient’s eyes are like a layer of gray skin also grinding pain, should go to the regular hospital in time for examination, identify the cause and active treatment.