The redness of the eyes after drinking may be caused by the increase of ethanol concentration in the blood after drinking, which results in vasodilatation, or it may be caused by the increase of intraocular pressure due to nausea and vomiting after drinking.
1. Increase in blood ethanol concentration: After drinking alcohol, the ethanol in the wine will enter the blood, thus increasing the concentration of ethanol in the blood. Ethanol can dilate the blood vessels, which will cause people to have symptoms such as bloodshot eyes and flushing, and will return to normal after gradual metabolism.
2. Elevated intraocular pressure: Nausea and vomiting after drinking alcohol can lead to increased intraocular pressure, which can cause the capillaries of the eyes to become congested and red bloodshot, which can be relieved after resting.
If the symptoms are more serious, you can use nafamivir eye drops under the guidance of the doctor for treatment, which will help to eliminate the red blood.