ABSTRACT
Femtosecond laser-assisted laser in situ keratomileusis(FS-LASIK)and small incision lenticule extraction(SMILE)are the mainstream corneal refractive surgeries at present. Despite efficacy, safety and predictability they have showed in refractive error correction, there are still complications relating to femtosecond laser, such as suction loss and opaque bubble layer(OBL), due to that the production of corneal flap or lenticule is dependent on the femtosecond laser. OBL is a complication that is unique to femtosecond laser surgery and the bubbles are generated from photo-disruptive effect towards corneal tissues which consisted of water vapor and carbon dioxide, and OBL gradually formed when the bubbles are trapped in the stroma. The bubbles can influence the intraoperative manipulation and postoperative visual quality. This review discusses the mechanism, grading, classification, and influencing factors of OBL and its effects on intraoperative manipulations and postoperative recovery, in the hope of providing reference and basis for further clinical studies.
ABSTRACT
Ever since 1980’s, outcome-based learning (OBL) has been applied to the reform in education as a systematic method in the whole world. It’s based on the expected learning outcomes and emphasized on study from the aspect of students, and its target is to let the students transform what they have learnt into practice. Therefore, it’s widely rewarded in the undergraduate medical education. As a basic theoretical course in acupuncture-moxibustion and an essential component in traditional Chinese medicine, Meridians and Acupoints is a compulsory course for overseas students in studying traditional Chinese medicine. The authors induced OBL into the study of this course and correspondingly conducted exploratory reform in the education of evaluation, by taking practice as the expected outcome and reversely designing teaching and evaluation.