Abstract:AIM:To study the optic disc parameters of normal people in Han nationality in Guangxi.METHODS:One hundred and twenty blood-unrelated nomoral volunteers living in Lonlin region of Guangxi were involved in the study and divided into 4 groups according to their ages.Heidelberg retina tomograph-Ⅱ(HRT-Ⅱ)was used to obtain the optic disc parameters.The parameters included optic disc area(DA),cup area(CA),cup volume(CV),rim area(RA),rim volume(RV),height variation contour(HVC),cup shape measure(CSM),mean cup depth(MCD),maximum cup depth(MxCD),cup/disc area ratio(C/DAR),rim/disc area tatio(R/DAR),mean retinal nerve fiber layer thickness(mRNFLT) and cross-section area(RNFLA).RESULTS:The parameters of optic nerve head(ONH) in normal eyes were as follows:DA(2.2165±0.4266)mm2,CA(0.4816±0.2979)mm2,RA(1.7311±0.3217)mm2,C/DAR(0.2074±0.1092),R/DAR(0.7923±0.1091),CV(0.1076)mm3,RV(0.5196±0.1519)mm3,MCD(0.2055±0.0798)mm,MxCD(0.6039±0.1949)mm,HVC(0.4513±0.1639)mm,CSM(-0.2155±0.0617)mm,mRNFLT(0.3059±0.0845)mm,RNFLA(1.5785±0.3830)mm2.The normal volunteers were divided into 4 groups according to their age and a negative correlation was found between mRNFLT,RNFLA and age.CONCLUSION:HRT-Ⅱ can be used to measure optic disc parameters of normal people in Han nationality.The age influence should be paid attention to in measuring.
