[Research progress of diagnosis in neuropathic corneal pain]

The cornea is the most innervated tissue in the human body. Neuropathic pain occurring in the cornea has gradually attracted the attention of ophthalmologists. However, the definition and pathogenesis of neuropathic corneal pain (NCP) have not been clearly defined, making the diagnosis and treatment of the disease extremely challenging. In recent years, with the application of ocular surface pain assessment scales, in vivo confocal microscopy and functional magnetic resonance imaging in the clinical assessment of NCP, the diagnostic methods of NCP have been enriched. This paper reviewed the research progress of diagnostic methods of NCP, with a view to improving the ophthalmologists' understanding of NCP and promoting the application of these technologies in the diagnosis of NCP.