For the harm of chondroitin sulfate eye drops, mainly cause localized itching, redness and allergic phenomenon occurs, so the chondroitin sulfate is only limited to drop eye ophthalmic, and eye drops by mistake, please make the bottle of hand and eye contact, lest cause pollution of the liquid, which can cause inflammation of the eye in eye drops, and be sure to tighten the cap after use, to prevent pollution. And drug changes and changes in the character, must be prohibited to prevent eye irritation, thereby exacerbating the disease.

　　And must not be excessive application of chondroitin sulfate eye drops, for chondroitin sulfate eye drops is from animal tissue extraction, purification agents, and with the viscosity of acidic polysaccharide substance, is constitutes the core mesenchymal cells, and to maintain the relative stability and normal function of cells environment, has a very important role.

　　So once the character change or pollution occurs, it must be prohibited to prevent damage to the eyes.