The cause of eyes looking dull and staring is usually due to strabismus, dry eye, refractive errors, etc.
Strabismus makes the eyes look inattentive and dull due to the fact that the eyes are not oriented parallel to each other.
In dry eye, the lack of tear lubrication and protection on the surface of the cornea can make the eyes look dull and lifeless.
Refractive error patients without glasses for correction, because of poor vision, unable to make a sensitive response to subtle changes in the external environment, will also make a person feel the eyes look lifeless and dull.
The patient should go to the ophthalmology department of the hospital for a professional examination to determine the cause of the dull and lifeless gaze, and then correct and treat the cause of the problem.