corneal sensitivity

sensitivity, corneal 

The capability of the cornea to respond to stimulation. Corneal sensitivity to touch is assessed by an aesthesiometer that measures the corneal touch threshold (CTT), which is the reciprocal of corneal sensitivity. Sensitivity varies across the cornea, with the centre being the most sensitive. Diseases and rigid contact lens wear greatly reduce the sensitivity of the cornea. See aesthesiometer; corneal touch threshold; corneal hyperaesthesia.
References in periodicals archive ?
A reduction in corneal sensitivity or complete corneal anesthesia is the hallmark of this disease and is responsible for producing corneal ulceration, perforation, pain and impaired vision.
To evaluate corneal sensitivity (recorded as present, absent, or diminished) before application of topical anesthetic, a wisp of cotton formed from a cotton-tipped applicator was used to gently touch the central cornea.
In these patients, eye dryness is due to decreased corneal sensitivity and reduced tear secretion after stimulation of the corneal surface [16].
The results show that corneal lesions healed in three quarters of patients, with an increase in corneal sensitivity also reported.
Although the data are still "masked" and, therefore, it is not yet known which patients received rhNGF and which received the placebo, complete resolution of corneal lesions was recorded in the majority of patients, with similar percentages in the two groups treated with rhNGF at different doses, as well as an increase in corneal sensitivity in approximately one in every three patients.
It has already been established that an alteration in corneal sensitivity blocks lacrimal gland protein, electrolyte, and water secretion (Dartt 2009).
Diabetic neuropathy was associated with progressive, significant reductions in corneal sensitivity (as measured by non-contact corneal aesthesiometry), nerve fiber density, nerve branch density, and nerve fiber length.
Neurotrophic keratopathy is a degenerative eye disease characterized by decreased corneal sensitivity and poor corneal healing.
It causes a reduction in corneal sensitivity and photophobia, with recurrent corneal erosions.
Greater return of corneal sensitivity with Epi-LASIK procedure than with LASIK
In addition, MIM-D3 may have additional benefits than currently available dry eye therapies including the potential to improve neural function, which may improve corneal sensitivity and integrity.
Furthermore, there is a reduction in reflex tearing, which may be due to a decrease in corneal sensitivity (see later).