Looking at bright objects has a negative impact on the eyes, and eye and dental disorders sometimes cause headaches. Given these facts, what can cause headaches among the following options:
- cloudy and rainy weather
 - hyperthyroidism
 - prolactin release
 - Damaged hearing
 - The bending of a ray of light
 - Leptospirosis
 - Warm air moving into cold air
 - looking at bright objects


 

        looking at bright objects 