Tear Film Osmolarity in Response to Long-Term Orthokeratology Treatment

Purpose:To compare tear film osmolarity (TFO) measurements in non–contact lens (CL) wearers and wearers of hydrogel or overnight orthokeratology (OK) CLs, and to assess possible effects of long-term OK on TFO.Methods:Overall, 108 subjects with moderate myopia participated in 2 experiments, and TFO w