Compound tropicamide eye drops can return to normal in about 6-8 hours after use, the specific recovery time varies according to the patient’s physique. Compound tropicamide eye drops is commonly used in the clinic for pupil dilation drugs: can paralyze the ciliary muscle, so that the patient to expose the true refractive error, commonly used in refractive examination; can make the pupil dilated, so that the fundus of the eye is fully exposed, commonly used in fundus examination. The drug can be completely metabolized after about 6-8 hours, which is less damaging to patients. Some patients have strong metabolizing ability and can recover in about 4 hours at the shortest. Compound tropicamide eye drops belongs to prescription drugs, there are strict contraindications for use, patients should consult a doctor before use.