A 6-year-old child’s photophobia may be caused by strabismus, conjunctivitis, dry eye, and inverted eyelashes. 1. Strabismus: Children with intermittent strabismus may squint in the sunlight, possibly due to an abnormal state of the eyes that cannot tolerate the stimulation of sunlight. 2. Conjunctivitis: When children have conjunctivitis, there is localized inflammatory infiltration, and light exposure will stimulate the inflammation and aggravate eye discomfort, so children with conjunctivitis will have photophobic symptoms. 3. Dry eye: dry eye children because of the lack of lubrication of the eye surface of the tears, dry eyes and other symptoms of discomfort, there will be photophobic symptoms. 4. Inverted eyelashes: Children with inverted eyelashes experience stinging, photophobia, and tearing due to the abnormal direction of eyelash growth, which irritates the eye surface tissue. It is recommended that children with photophobia seek prompt medical attention to evaluate their condition and follow the doctor’s instructions for treatment.