Flash burns occur from intense light sources such as arc welding or tanning booths when improper eye protection is worn. Blepharitis causes eye pain when an inflammation of the eyelid is caused by plugged oil glands at the eyelid edges. A sty or chalazion causes eye pain because of local irritation. They cause a lump you can see or feel within the eyelid formed by a blocked oil gland. This lump causes irritation to the eye.
Orbital pain is described as a deep, dull ache behind or in the eye.
This pain is often caused by diseases of the eye. Glaucoma is an eye emergency that causes orbital pain. Optic neuritis is an inflammation of the optic nerve that connects to the back of the eye. The cause of this inflammation can be multiple sclerosis, viral infections, or bacterial infections. Sinusitis, which is a bacterial or viral infection of the sinuses, can cause a sensation of orbital pain.