What eye drops are best is relatively broad, and you need to take the corresponding eye drops to treat or relieve symptoms according to your situation. If it is dry eye, you need to choose artificial tear drops to relieve the symptoms, if it is infectious conjunctivitis or keratitis, you need to use anti-inflammatory or antiviral eye drops to be more symptomatic. If it is allergic conjunctivitis caused by allergies, anti-allergy drops or hormonal drops are usually needed to relieve the symptoms. In the case of glaucoma, eye drops that lower the intraocular pressure are needed to keep the pressure under control and slow down the progression of the glaucoma lesion. Conjunctivitis or diseases caused by immune factors such as iridocyclitis or superficial scleritis usually require hormonal eye drops for treatment. Therefore, there is no best eye drops, only the most suitable eye drops. The best and most suitable eye drops are those that are taken according to your symptoms and the cause of your disease.