PurposePrevious studies suggest that overnight orthokeratology (OOK) may be detrimental to tear function. We aimed to investigate the effect of OOK on lipid layer thickness (LLT). blink pattern. and meibomian gland and elucidate the relationship of these variables. https://www.spidertattooz.com/Nyrkki-terassormus-Teras-316L/