Why does one of my eyes feel as if it is glaring?

If one of your eyes feels like it's glaring, it could be due to several reasons, such as dryness, irritation, or fatigue. Allergies or exposure to bright lights can also cause discomfort or a sensation of glare. Another possibility is a condition called photophobia, where light sensitivity occurs. If the sensation persists or is accompanied by other symptoms, it's best to consult an eye care professional.