Criteria for evaluation of conjunctival impression cytology (CIC) in early screening of vitamin A deficiency / 解放军医学杂志

ABSTRACT

Objective To make objective criteria for evaluation of conjunctival impression cytology(CIC)in early screening of vitamin A deficiency(VAD)in children.Methods The status of vitamin A in children aged 3～7 years old was evaluated with CIC method.In order to justify the judgemental criterion of CIC,the changes in CIC and the levels of serum vitamin A were studied.Results Goblet cells and normal epithelial cells could be found in grade 0～1 of CIC;only normal epithelial cells without Goblet cells could be seen in grade 2 of CIC,and only abnormal epithelial cells were identified in grade 3～5 of CIC.Along with the increasing degree of abnormalify of CIC,the levels of serum vitamin A decreased accordingly(r=-0.824,P