The patient’s redness at the end of the eye may be related to crying, trauma to the end of the eye, eczema at the end of the eye and other factors. 1. Crying: when people cry, if you repeatedly wipe the tears at the corners of your eyes with your hands or tissues, it can cause reflex expansion of subcutaneous capillaries in the skin of the tail of the eyes, and even cause plasma and tissue fluid to penetrate into the dermis due to the increase in local pressure, so the tail of the eyes will be red. 2. Trauma at the tail of the eye: when the patient’s skin at the tail of the eye because of foreign objects bumping, external impact and other causes of local trauma, subcutaneous capillary rupture and bleeding, which can lead to redness at the tail of the patient’s eyes. 3. Eczema at the tail of the eye: when the skin at the tail of the eye comes into contact with allergens and produces an immune response or is infected by microorganisms and produces an inflammatory response, the subcutaneous capillaries at the tail of the eye of the patient in the stimulation of immune factors or inflammatory factors to enhance the permeability of the tail of the eye, redness can occur. It is recommended that patients with obvious redness at the tail of the eye should consult a regular hospital in time to assess their condition and under the guidance of a professional doctor.