Decreased corneal sensation

What it means

Reduced ability of the cornea to respond to stimulation.

Corneal sensitivity to touch can be assessed by an aesthesiometer, which measures the corneal touch threshold. Decreased corneal sensation is associated with a decreased corneal reflex (HP:0008000); however, impairment of the corneal reflex can have other causes such as trigeminal nerve compression or a cerebellopontine angle lesion. Well known causes of decreased corneal sensation include Herpes simplex keratitis, neuroparalytic keratitis, leprosy, acoustic neuroma, and absolute glaucoma.

Rare diseases that can present with this8

The range is how often this sign appears among people diagnosed with each disease — it is not a probability of having any of them. Many of these signs also occur in common, non-rare conditions. A sign on this page is a conversation to have with a clinician, not a conclusion.

Part of the broader category

Also called: Corneal hypaesthesia · Corneal hypesthesia · Decreased corneal sensitivity · Reduced corneal sensation