It is also called compound chondroitin sulfate eye drops, its main active ingredients include chondroitin sulfate, vitamin E, vitamin B6, allantoin, taurine, this drug can mainly improve eye fatigue, for eye dryness, among these main ingredients chondroitin sulfate is one of the components of the connective tissue matrix in living organisms, the mechanism of action is to inhibit the activity of phosphodiesterase, can promote peripheral circulation and has the effect of regulating cell growth. Vitamin E is mainly involved in the scavenging of free radicals and has an antioxidant effect, which can dilate peripheral blood vessels, improve local blood circulation and promote the recovery of inflammatory lesions. Vitamin B6 is involved in the metabolism of amino acids and fats, which helps to eliminate eye fatigue and nourish the eye. Allantoin, by increasing the dilution ability of skin keratinocyte mucin, while acting directly on keratin protein molecules, can induce an increase in the ability to bind water, which can absorb more water and help to repair epithelial tissues and wound healing, and taurine has the effect of relieving ciliary muscle spasm. Therefore, R&J eye drops are mainly used to relieve eye fatigue as well as treat dryness of the eyes.