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《Journal of Practical Preventing Blind》 2006-01
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Evaluate for parameters of HRTII macular edema module

TIAN Bei, LI Xiao-xin, WANG Shi-rong, ZHAO Ming-wei. Department of Ophthalmology, Peking Univesity People's Hospitul, Beijing 100044,China  
Objective Evaluate three parameters of HRTII maculat'edema module,Discussing the diagnosis value HRTⅡto macular edema. Methods Detecting retina depth of macular region by 78 (78 eyes) normal people .The retina surface map, signal width and edema index of this retina area can be achieved after the pictures are processed by computer. Z value (the biggest scan thickness of reflection ratio light intensity), W value (the signal width), and E value (value of edema index) are analyzed. Results In the macular region retina (diameter=1mm)The average of Z value is 1.4430848, coefficient of variation is 55.6%.The average of W value is 795.27193.53, coefficient of variation is 17.6% . The average of E index is 1.13E035, coefficient of variation is 27.8%.Three parameters are statistically significant in various Individual. But the repetition is good. In different time, Three parameters are no statistically significant. Conclusions The HRT-II is easy to quantu analysis macular retina thickness, with strong repetition ability, but has large variability. It's an ideal method to follow-up the pathological changes of macular region retina in living body.
【CateGory Index】: R774.1
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