Can this asymmetry post breast reduction be fixed with just breast implants? (Photo)

You raise an excellent question. I would recommend you discuss your options with your surgeon or another Plastic Surgeon who is certified by the American Board of Plastic Surgeons. You have the option to merely revise the larger breast by removing breast tissue strategically. This would mean your breasts would remain the same size and look as your smaller one. If you choose to move forward with breast augmentation, I would recommend that you make sure you are 100%
Sure you want to enlarge your breasts. No matter what size implant you choose your breasts will be enlarged. If you choose that approach your surgeon can remove the extra breast tissue on the larger side and then use the same size implants. And also remember that breast implants have maintenance and that they will typically not last a lifetime. Bottom line is, I recommend you and your surgeon discuss both possibilities. Good luck!

In general, I do not recommend placing different size implants. It would be best to place two bilateral symmetric implants and then reduce the skin/soft tissue over the implant.