Welcome to Earth… Mrs. Trump
Pretty sure FLOTUS' eye "defect" is from using the camera filter that overlays the Santa hat & floating reindeer. Along with the obvious additions to the pic via the filter, there's usually a facial/skin softener and eye enhancer implemented. Most of these filters only get the best results when you are looking straight ahead. The filter probably locked onto one of her eyes and assumed the location of the other one, but since her head was pointed at a 45º angle, her eye was not where it "should've" been… hence the anomalous right eye.