After unilateral eyelid surgery, opposite eye feels like it's drooping. (Photo)

So as some surgeons have explained in response to your post, your right eyelid hasn't become more droopy. This is a case of a slight over-correction on your operated left eyelid. This is a common possible risk associated with ptosis surgery, and its not unusual for ptosis surgery to require revision (about 20% of the time).Your surgeon would definitely want to see you back soon to recommend surgeon techniques (massage/eyelid stretch) in hopes of lowering the left eyelid by 0.5 to 1 mm. If the more conservative approach is ineffective, a minor revision surgery may be required.Follow up with your surgeon soonBest regards

Thank you for sharing your question. It is not unusual for the non-operated eye to develop ptosis after the first eye is operated on. In your cases the surgical eye looks slightly higher than appropriate. It may improve, but make a consultation with your surgeon for post-op evaluation. Good luck.  

You need to see your surgeon immediately.  This is best addressed early.  Massage can be used to effectively stretch the upper eyelid.  There are very few situations where this won't correct the position of the left upper eyelid.  I suspect that if this is successfully done, the two lids will look about right.  Do not accept being told that time will resolve this issue.  It will not correct with time.  It needs active management.

There is something called Herring's law which means that sometimes when you lift the lower lid, the other side may fall.  In your case, it is actually more that you are a little overcorrected on the left.  Your lid is too high, so the right looks lower.  Talk to your surgeon, but I would have you massage it down.  As the lid comes down, the right one will actually lift a little and be more symmetric.  

When one eyelid has Ptosis is corrected, it is common for the opposite eyelid to begin to droop.  This is called the Herring's effect because the eyelids work kind of like a seesaw.  At this point, your left upper eyelid is slightly overcorrected, so the condition may improve as you heal.  Make sure your surgeon is aware of your concerns.  Good luck!

It is too early to assess the final outcome.  Usually, there is some dropping down of the lid after Ptosis surgery, so your surgeon may have over corrected it slightly to compensate for this.  From your photos, your result looks excellent.

You are correct that ptosis of the opposite eyelid can occur after unilateral eyelid surgery and this is called Hering's law. However from your photo, it does not appear that your right upper eyelid is droopy but rather the left upper eyelid looks a bit high. Eyelid massage and stretching can help lower an overcorrected eyelid and your surgeon may be able to demonstrate to you how this is performed.

as much as you may appreciate it.  Your corrected lid is 'overcorrected' but they do drop with time and if needed, massage.  Discuss your concerns with your surgeon as to what to do if anything at this point.

It seems that your left eyelid is slightly overcorrected. Massage may help. See your eyelid specialist to take a look and recommend what to do.

You are very astute in your observation. From the photos it looks as though the left side may be OVER corrected right now, and the right side is compensating by lowering- something call the Hering's effect. Addressing the over corrected left side is vital and should be done ASAP.