Differential diagnosis of eye pain are :
-intracranial mass
-viral conjunctivitis
-bacterial conjunctivitis
-optic neuritis
-scleritis
-episcleritis
-uveitis
-ophthalmic zoster
-temporal giant cell arteritis
-migraine
-cluster headache
-sinusitis
-age related
-Sjogren syndrome
-anti cholinergic
-dacryocystitis
-inverted eyelash / entropion
-eyelid disorders / chalazion / blephritis/ hordeolum
-actinic keratitis
-orbital cellulitis
-periorbital cellulitis
-acute glaucoma
-trauma
-keratitis
-herpes simplex
-corneal ulcer and inflammation
-foreign body / corneal abrasion
-intracranial mass
-viral conjunctivitis
-bacterial conjunctivitis
-optic neuritis
-scleritis
-episcleritis
-uveitis
-ophthalmic zoster
-temporal giant cell arteritis
-migraine
-cluster headache
-sinusitis
-age related
-Sjogren syndrome
-anti cholinergic
-dacryocystitis
-inverted eyelash / entropion
-eyelid disorders / chalazion / blephritis/ hordeolum
-actinic keratitis
-orbital cellulitis
-periorbital cellulitis
-acute glaucoma
-trauma
-keratitis
-herpes simplex
-corneal ulcer and inflammation
-foreign body / corneal abrasion