How to Fix One Eye That's Bigger Than the Other?

From the photo it looks like your right upper eyelid is droopy. That may account for the difference in appearance between the two sides. However, what you need is a detailed consultation to assess the two eyes to make sure that this is the basis for why the two sides look different.
Once this is determined then it is possible to talk about how to make it better. In Las Vegas, you might consider seeing Steve Leibowitz, M.D. a highly qualified eye plastic surgeon.

Thank you for sharing your concerns! Eye asymmetry, where one eye appears larger or positioned differently, is a common issue that can often be improved. Depending on the cause, solutions may include non-surgical treatments like dermal fillers to balance the area or surgical options such as eyelid surgery (blepharoplasty) for more significant asymmetries. Since you're already planning rhinoplasty, consulting with a facial plastic surgeon experienced in comprehensive facial aesthetics would allow for a personalized approach to harmonizing both your nose and eyes. They can recommend the best course of action to achieve your desired look.

Good question!
It's hard to tell definitively from the photo, but it appears that your eyes aren't necessarily different sizes, but rather sit at different levels. This is often because the size and/or height of the bones that make up the orbit are different. I think the first step in figuring out the cause of this would be a CT scan of your face. This can sometimes occur due to under development of one of the sinuses which can pull one eye lower than the other called "silent sinus syndrome". If this is the case, then seeing an ENT who can perform sinus surgery will potentially stop the process of that eye drooping lower and potentially an Oculoplastic surgeon who can put some sort of implant to elevate the height of the orbit to "lift" the eye.
Hope this helps!

To address asymmetry where one eye appears bigger than the other, several surgical and non-surgical options exist, often tailored to the underlying cause of the asymmetry:
Blepharoplasty (Eyelid Surgery): Can correct differences in eyelid size or shape by removing skin or repositioning lid folds. This can make the eyes appear more symmetrical.
Brow Lift: If the asymmetry is due to differing brow positions, a brow lift can create a more balanced appearance.
Neuromodulator: Non-surgical options like Botox or Dysport can adjust muscle activity around the eyes, subtly improving symmetry.
Ptosis Repair: For asymmetry due to eyelid drooping (ptosis), surgery can lift the drooping eyelid to match the other eye. Additionally eyedrops like Upneeq can temporarily improve ptosis.
Consultation with a plastic surgeon or oculoplastic surgeon is crucial to assess your specific situation and recommend the most appropriate treatment.

Initial observation ⎯ Based on the visual analysis, it appears that the right upper eyelid might be experiencing droopiness, which could be contributing to the dissimilarity in size between the two eyes. However, it's crucial to emphasize the importance of an in-depth consultation to thoroughly evaluate both eyes. This will ensure an accurate understanding of the underlying factors causing the asymmetry.

Tailored assessment ⎯ I strongly recommend a comprehensive consultation to gain a complete understanding of your unique situation. Through this thorough assessment, we can determine the precise cause of the differing appearances and devise an effective strategy to address it.

Expert guidance ⎯ With my specialized expertise and dedication to achieving harmonious, natural results, I am here to guide you through the most appropriate options for your situation.

If you have any more questions, feel free to reach out to me at chopraplasticsurgery.com

Excellent and a very common question. Everyone's face is asymmetric. Everyone has a smaller and a larger side to their face and they tend to age differently. There are nice articles published comparing faces to their digitally manipulated symmetric versions, showing how they are not as attractive as their original asymmetric version. 
During any consultation for facial rejuvenation, we frequently point them out to patients as they commonly are noticed only after the surgery since patients spend more time and look at  their face with more critical eyes. Regarding your eyes unless you have any history of major trauma, or vision problems as a result, I would not recommend a major bony surgery with risk for correction.
If your concern about your nose is related to the width asymmetry, that can be made more symmetric with alar base reduction which is not a high risk surgery.  

You really need an evaluation by an oculofacial plastic surgeon.  It may be that one lid is droopier and needs to be lifted.  It may be that on one side the lid is too high and needs to be lowered.  It may be a sign of thyroid disease or another medical condition.  You need to find out why one eye is appearing larger and then it can be treated.  

 

It appears that one orbital bone may be lower than the other, which is normal asymmetry and cannot be fixed.    From the picture there may be some ptosis on your right eye and this can be addressed through a tightening of the upper lid eye muscle called the levator aponeurosis and Müller’s muscle.  An oculoplastic surgeon usually performs this.

Plastic surgeons do not make eyes bigger or smaller to match. All people are slightly asymmetrical. One hand is bigger and one foot is bigger. If you were not made to match how do you expect a mere mortal to do it?