I have involuntary wide opened eyes. It looks scary to see me. Can I treat my eye disorder?

You are likely referring to upper eyelid retraction.  First, it is important to find out the cause (inherited vs. thyroid eye disease vs. other).  Then you can consider upper eyelid retraction surgery to lower the upper eyelids, which can be done under local anesthesia.  See an oculoplastic surgeon.

A picture would be helpful. There can be many reasons medically why you may have wide eyes. Proptosis or exophthalmos is the medical term for wide open eyes. Thyroid disease (Grave's disease) is the most common reason for bilateral proptosis. Other reasons include inflammation around the eyes (pseudotumor) or benign or malignant tumors around the eye. I recommend a complete ophthalmologic examination by an eye specialist or ophthalmologist, not a optometrist. There are options for aesthetic treatment of the wide eyes after the medical causes for the proptosis are treated.

One of the more common causes of a wide-eyed "staring" appearance. It can be easily diagnosed with simple blood tests. I would have this ruled out before investigating other causes.Good luck!