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To assess nocturnal lagophthalmos & overnight orthokeratology Lens
Using high oxygen permeable CRT overnight orthokeratology Lens to simulate scleral contact lens, reduce the punctate corneal epithelial erosions caused by Nocturnal lagophthalmos. To evaulation the changes of CCLRU scale, punctate corneal epithelial erosions (PEE) position and inverse Bell's phenomenon (none rotating the eyeball upward while eyelid closure), and speculated that overnight lens can reduce the evaporation of tearflilm.
