Decreased corneal sensations can be seen in -
Neuroparalytic keratitis occurs due to paralysis ofthe sensory nerve supply of the cornea. Involvement of corneal nerves in leprosy. REF:Comprehensive ophthalmology,20th edition,AK Khurana,pg no.107.
Bacterial corneal ulcer
Mycotic corneal ulcer
Leprosy
Interstial keratitis
Cornea and sclera