摘要
目的:探讨图形视觉诱发电位(P-VEP)在不同时间频率对原发性青光眼诊断的敏感性。方法:实验分3组:原发性青光眼(PG)组30例51眼、高眼压症(OHT)组13例16眼和正常对照组23例46眼,分别记录不同时间频率(1,2,4,8,16,32Hz)P-VEPP100波波幅的变化,并与正常组比较。结果:高眼压症组在中高时间频率(8Hz)时,PVEP的波幅明显下降,差异有显著性;青光眼组在所有时间频率均表现P100波幅下降,在较高时间频率(8Hz以上)敏感度较大,差异有显著性。结论:PVEP在原发性青光眼的早期就已出现异常,可以做为早期诊断的一项指标,这些异常用中高时间频率(特别是8Hz时)检测更明显。
AIM： To investigate the sensibility of pattern visual evoked potential （P-VEP） on the diagnosis of glaucoma in different temporal frequency.
METHODS： The P-VEP were recorded in 51 eyes of 30 primary glaucoma （PG） patients, 16 eyes of 13 ocular hypertension （OHT） patients and 46 eyes of 23 age-equivalent normal people using an array of different temporal frequency and then the patients were compared respectively with the normal group.
RESULTS： The P100 wave amplitude in OHT group was significantly lowered at 8Hz, and was lowered at all temporal frequency in PG group, especially when the temporal frequency was higher.
CONCLUSION： The P-VEP can be abnormal when the PG is still in its early stage, so it can be an index of early diagnosis and this is more obvious when the temporal frequency is higher, especially at 8Hz.
出处
《国际眼科杂志》
CAS
2006年第3期534-536,共3页
International Eye Science
关键词
原发性青光眼
图形视觉诱发电位
时间频率
primary glaucoma
pattern visual evoked potential
temporal frequency
