Hi Daisy,
Early healing and Early Assymetries
It does appear that the eyelid incision on the left is higher than the right one by a few millimeters. Since these are photos, and swelling and other factors can't be assessed in a face to face examination, I would give the surgeon some benefit of the doubt, and give yourself a minimum of 6-12 months to heal completely. It may be that the assymmetry of the two sides will improve if the left eye with the higher crease happens to still have more bruising and swelling than the right side. On the before photo, it appears than the left eyelid looked puffier, and on the after photo, it appears that much of that fat was removed, which can also account for a higher eyelid crease.
Leaving Equal amounts of skin
If a revision were to be performed for to even out the creases, my goal is to "leave" an equal amount of skin from below the eyebrow hairs to the eyelid crease, and the eyelid crease to the eyelash line. If the skin below the eyebrow and the eyelid crease is equal on both sides, then a tiny strip of skin should be removed from the existing crease toward the eyelash line. When measuring the skin removal, some surgeons will try to remove an equal amount of skin, which makes sense, as long as the skin that is left on the patient is also equal on both above and below the eyelid crease.
I usually take 10-15 minutes before the procedure to measure with a fine caliper and a green forceps to "estimate the excess skin" and mark the incision location, as well as the amount of skin removed and the amount of skin left. I rarely make the perfect line on the first try and need to go back and forth between the two eyelids to come to a "compromise" between the two sides. I've seen on the television plastic surgery shows where they mark the upper eyelids "free hand" while making all of the other facial markings, but I don't feel I am able to do the same without using strict measurements at key areas.
Upper eyelid hollowing
Looking closely at the before photos, your eyes look puffier, with the left upper eyelid puffier than the right side. On both after photos, the puffiness on both sides appear flatter, but in particular on the left side, it appears that the upper rim of the eye socket is visible. People with naturally deep set eyes tend to have this type of upper eyelid hollowing. This hollowing is also another reason for the higher eyelid crease. The right eyelid looks puffier than the left, so it is also possible, that as the swelling comes down on the right side, the right crease will also become higher and match closer to the left side.
Raising one eyebrow
Another observation that I have seen is that patients who have upper eyelid hollowing tend to raise their eyebrows more on the hollowed side. You had a tendency to raise your left eyebrow before surgery as well as after surgery
Go to a mirror, and push your left eyebrow down a bit to match the height of your right side and see if the eyelid crease heights become more even. If so, the surgeon can only do so much during surgery to perform an accurate surgery, but the surgeon can't control how a patient may hold their eyebrows assymetrically after surgery.
Potentially Botox to the forehead on both sides will help to "reset" or "retrain" your forehead muscles and relax the left forehead. If the left forehead is more relaxed it may also help with the assymetry of the eyelid creases.
Don't worry
Depending on how everything settles down with full upper eyelid recover, you will either not need to do anything since the eyelids may even out. Perhaps a small revision procedure to even out the skin remaining might be performed on one side. Or non-surgical procedures can be done to lower the upper eyelid crease by adding back volume to the upper eyelid hollow. Please check out the link below, which shows a patient of mine who had her upper eyelid crease lowered.
Best,
Dr. Yang