Chasing the objective upper eyelid symmetry formula; R, RMSE, POC, MAE, and MSE.

Purpose: Investigate the most appropriate mathematical formula to objectively express upper eyelid contour symmetry.

Methods: 62 eyes of 31 patients were included in the study. The upper eyelid contour symmetry of the patients was classified subjectively (independent of MRD1) as poor, acceptable, and good by three oculoplastic specialists (senior, expert, and junior surgeon).

Muller muscle conjunctival resection or external levator advancement; a quantitative comparison of symmetry in unilateral ptosis.

Purpose: To compare muller muscle conjunctival resection (MMCR) and external levator advancement (ELA) in terms of objective and subjective symmetry in unilateral ptosis.

Methods: The patients who underwent unilateral MMCR (group1,  = 25) and ELA (group2,  = 25) were reviewed retrospectively. With the written algorithm, margin reflex distance-1 (MRD1), localization of the contour peak, and the percentage of overlapping curvatures (POC) of both upper eyelid curves were calculated.

A decision support system for scheduling the shifts of physicians during COVID-19 pandemic.

The rapidly spreading COVID-19 pandemic has affected many people worldwide. Due to the high infectivity, countries make calls to stay at home or take measures such as lockdowns to ensure that people are least affected by the virus. Meanwhile, infected people are getting treatments: people who are slightly affected are quarantined at home, and those who are heavily affected are treated in hospitals.