Well, generally speaking, it is normal to have red eyes after the corneal transplant. First, you should know that the main cause of red eyes can be the eye infection, and it is caused by bacterial, viral, and allergic. So, when you have eye infection, your eyes can be itchy, red, and pink. What is more, after you have corneal transplant, it is easier to have eye infection, leading to red eyes. To treat it, you need to have some cold compresses on your eyes. For example, you can have some cold cucumber or teabags. By using it, it will just make your situation better. Also, you should not touch your eyes with your unclean hand.
Get red eyes always happen for those patients after having corneal transplant. Following your doctor's suggestion take your eye medicines or use the eye drops as directed; Do not rub your eyes even your eyes feel itching; Avoid get something into eyes because it's bad for your eyes recover; Avoid lifting heavy stuff or do much exercise. Take those suggestion and hope you recover soon.
There may be a lot of side effects after the corneal transplant, including the red eyes. You should better not use the eye drops which may contain the medical care. You could use the warm compress to make the eyes feel comfortable. This is the easy way. You could also have the good rest for the eyes to let the eyes get recovery soon.