Every corneal transplant patient, regardless of the type of transplant, is discharged from the hospital with a focused order from the doctor for a review schedule. Why is it so important to review corneal transplant patients and what is the real purpose of a review? What are some of the issues that patients should be aware of at each review? After a week of corneal transplantation, patients should go back to the hospital where the surgery was done for a review to see if there is any infection, whether the IOP is high or not, and how the transplantation film is doing; if there is no special problem, the review will be changed to once a month, usually one month after the surgery to adjust the dosage of eye drops and determine whether the antibiotic eye drops can be stopped; after half a year, the review will be changed to once every 2-3 months, mainly to observe the patient’s adverse reaction to the drugs and the anti-rejection eye drops. After half a year, the review will be changed to every 2-3 months, mainly to observe the patients’ adverse reactions to the drugs, and whether the anti-rejection eye drops are appropriate and whether there is any chronic rejection. With the improvement of the disease, many patients gradually do not take the review seriously, and often think that the review is to open the eye drops. In fact, the purpose of the review is twofold. First, it is to regularly observe the situation inside the eye, including the degree of graft fit, whether there is inflammation, the number of endothelial cells, etc., which are invisible to the naked eye and need to be checked to confirm. Even in some chronic rejection reactions, the patient does not feel it and the eye appears to be recovering well with the naked eye, but the examination can reveal microscopic changes in the eye and let the doctor know earlier about the possible risk of rejection. If intervention is made in the early stages of rejection, the transplanted piece will survive; if it waits until too many endothelial cells are lost, it will have to be transplanted again. Another role of the review is to see if there are any side effects of the medication and to adjust the dosage of eye drops or change the medication according to the recovery. For example, if some patients have slowly increased eye pressure after using hormones, they may strengthen the dosage of cyclosporine eye drops and reduce the dosage of hormones, etc. However, there is a great difference in how different people react to drugs, for example, children are more sensitive to hormones, and the rejection rate is significantly higher in children than in adults. Therefore, the adjustment of each drug dosage is based on a number of results from the review, such as intraocular pressure, endothelial cell count, and cell status, etc. The doctor will dynamically monitor the changes of the patient’s condition, which is why the review is always a specialist visit. Therefore, do not think that the review is just to prescribe medication, and do not give up the review because of the long distance. If the condition is stable for six months after surgery, patients can also have basic checkups, such as IOP measurement, at the local hospital. It is important to be alert to any uncomfortable symptoms and to review them in a timely manner so that the lesion does not creep in and catch you off guard.