Changing medications

When first diagnosed with wet AMD in one eye, I received injections of Lucentis. After a period of time, the medication was changed to Eylea. Several months later, I was again changed to Cimerli. Two months ago, I was diagnosed with wet AMD in the other eye also, as well as macular edema in both eyes.
I trust my ophthalmologist who also has extremely good credentials, but “ I think this is what we need to do” is basically his response after showing me images from last and current appointments.
Has anyone else been in a similar situation and now know what’s going on?