Study of Sensory, Pain Thresholds and Pain Tolerance in Persons with Visual Impairment

Aim and Introduction: It is often assumed that persons with visual impairment have a better sensory perception this ability helps them to perceive the environment better. To objectively study this assumption we carried out a study on sensory, pain thresholds and pain tolerance in persons with visual impairment. Materials and Methods: An electrodiagnostic stimulator was used to assess the sensory threshold, pain threshold and pain tolerance using a standard procedure. Result: The sensory and pain threshold, and the pain tolerance in persons with visual impairment was found 3.66 + 4, 8.35+ 4.14 , 13.19+4.93 respectively as compared to 9.96 + 2.7, 13.13+ 2.62, 15.41+ 2.88, respectively in subjects with normal vision . On statistical analysis these results were found to be statistically significant (p<0.05). Conclusions: The sensory and pain threshold and the pain tolerance in persons with visual impairment were found to be lower in persons with visual impairment.