[Horizontal semicircular canals light cupulopathy: 2 cases report]

SummaryAnalyze 2 cases of horizontal semicircular canals light cupulopathy patient history, clinical manifestations, vestibular function and hearing test results, summarize the clinical features of the disease. All of the 2 patients showed a typicaln light cupulopathy nystagmus. That is, the nystagmus of the Roll-Test test is sustained to the ground, and there is no latency and attenuation with null plane. When the patient's nystagmus is characterized by direction changing positional nystagmus and head deflection nystagmus disappearance（null plane）, the possibility of horizontal semicircular canals light cupulopathy is to be thought of. In this paper, 2 cases of horizontal semicircular canals light cupulopathy received in our hospital are reported as follows.