Myopia is a major health problem, not only because of its high prevalence in Asia but also because it contributes to visual morbidity. This study aimed to evaluate the effect of ear acupressure for visual improvement on school children in Taiwan. Participants were fifth-grade school children with visual acuity between 6/37.5 and 6/9.6 in one eye. The experimental group (n = 35) received a 15-week ear acupressure intervention with seed embedding; the control group (n = 35) did not. Data for demographic factors, visual acuity, refractive error, and behavior toward visual health were collected before and after the intervention. The significant differences were observed between the two groups in visual acuity (p = 0.02), refractive error (p = 0.04), and behaviors toward visual health (p = 0.045). Performing ear acupressure may facilitate improved visual health for children. However, it requires more extended studies exploring its effects on elementary students in different grades. Longitudinal effects of this intervention also require further study.

The leaves of Laurus noblis L. (laurel) are mainly used as a spice in cooking, and the essential oil obtained by steam distillation of the leaves is used as an additive in foods, drugs and cosmetics. We investigated the effect of the volatiles emitted from the leaves of L. noblis at different doses (low-dose and high-dose groups) on vigilance performance in a visual discrimination task. By inhaling volatiles of the leaves of L. noblis, the decrease of the rate of true hits found in the control group was prevented in the low-dose group. The high-dose group showed higher scores than the low-dose group for subjective effects related to negative emotion. Meanwhile, both groups showed physiological effects suggesting stimulation of circulation. These findings suggest that the volatiles emitted from the leaves of L. noblis at low concentration could be utilized to maintain a high level of vigilance performance, such as the rate of true hits by improving physiological arousal without incurring the detrimental performance effects of negative emotion.