DIPLOPIA
Diplopia, known as double vision, occurs when you see objects duplicated in your vision rather than a single clear representation of each object.
PHOTOPHOBIA
Photophobia, also known as sensitivity to light, is the inability to tolerate light. In someone who is light sensitive, sunlight, fluorescent light or incandescent light can cause discomfort. Photophobia causes a need to squint, close the eyes, headache or nausea. Photophobia can trigger eye spasms or seizures.
Here are some ways to exercise your eyes.