A I-Auto CiccCrameter isetyenziselwa ukukhangela i-convergence yokukhanya emva kokungena kwi-eyeball. Isebenzisa imeko ye-Emmetrolia njengomgangatho wokulinganisa umahluko kwi vergence kunye nokusasazeka phakathi kweliso elihlonelweyo kunye ne-emmetropia. Ezinye zethu I-Auto CicctLometer ene-keratometer, i-keratometer isebenzisa iipropathi ezibonakalayo zeCornea ukulinganisa irediya ye-curvaa.