Accuracy and validity of IK4 handheld video keratometer measurements in children

作者:Harvey Erin M*; Miller Joseph M; Schwiegerling Jim; Clifford Donaldson Candice E; Green Tina K; Messer Dawn H; Dobson Velma
来源:Journal of AAPOS, 2011, 15(4): 407-409.
DOI:10.1016/j.jaapos.2011.04.002

摘要

The infant keratometer (IK4) is a custom handheld instrument that was designed specifically to allow measurement of corneal astigmatism in infants as young as 6 months of age. In this study, accuracy of IK4 measurements with the use of standard toric surfaces was within 0.25 D. Validity measurements obtained in 860 children aged 3-7 years demonstrated slightly greater astigmatism measurements in the IK4 than in the Retinomax K+. Measurement success was 98% when the IK4 was used. The IK4 may prove to be clinically useful for screening children as young as 3 years of age at high risk for corneal astigmatism.

  • 出版日期2011-8