Combined refraction and diffraction models for sea waves over complicated topography and with currents in shallow water

-Combined refraction and diffraction models in the form of linear parabolic approximation are derived through smallparameter method. More strictly theoretical basis and more accuracy in the models than Lozano's (1980) are obtained. Some theoretical defects in Liu's model (1985) with consideration of current are not only found but also eliminated. More strict and accurate models are, therefore, presented in this paper.The calculation results and analysis in applying the models to actual wave field with consideration of bottom friction will be given in the following paper.

Incidence of cystoid macular edema after Descemet's stripping automated endothelial keratoplasty

AIM： To determine the incidence of cystoid macular edema（CME） after Descemet＇s stripping automated endothelial keratoplasty（DSAEK）.METHODS： This study included all consecutive patients operated in a Spanish tertiary reference hospital over a period of four years. A total of 55 eyes from 47 patients matched the selection criteria. CME was diagnosed clinically at the slit-lamp and confirmed by optical coherence tomography. RESULTS： Six cases of CME were diagnosed postoperatively, which represented an incidence of 11%. Three patients had previously undergone DSAEK alone（7%; 3/41） and the other three, DSAEK combined with phacoemulsification（21%; 3/14）. Five out of six patients with CME responded to standard therapy.CONCLUSION： CME is a possible complication after DSAEK and can be treated with standard therapy. CME appears more frequently when DSAEK is combined with phacoemulsification and posterior chamber（PC） intraocular lens（IOL） implantation. Intraoperative damage to the corneal endothelial cells might play a role in the pathogenesis of CME. As long as the causes remain unclear, we recommend administering prophylaxis when risk factors are present or when combined surgery is planned.

Acupuncture plus Chinese Medicinal Fumigation and Washing for Edema of the Stroke-affected Limb

Objective: To evaluate the therapeutic efficacy of acupuncture plus Chinese medicinal fumigation and washing in treating edema of the affected limb in post-stroke hemiplegia. Methods: Two hundred patients with edema of the stroke-affected limb from our hospital were randomized into two groups according to their visiting sequence. In the observation group, 100 subjects were intervened by acupuncture plus Chinese medicinal fumigation and washing in addition to oral administration of diuretics, while the other 100 subjects in the control group were only given diuretics. The therapeutic efficacy was evaluated after successive 2-week treatments. Results: The total effective rate was 90.0% in the observation group, significantly higher than 66.0% in the control group, indicating that there was a significant difference in comparing the overall therapeutic effect(P<0.01). Conclusion: Acupuncture plus Chinese medicinal fumigation and washing in addition to oral administration of diuretics is effective in treating edema of the affected limb in post-stroke hemiplegia.

Clinical Observation of Acupuncture plus Patent Chinese Medicine for Post-stroke Constipation

Objective: To observe the clinical efficacy of acupuncture plus patent Chinese medicine in treating post-stroke constipation. Methods: Sixty eligible patients with post-stroke constipation were randomized into a treatment group and a control group, 30 in each group. The treatment group was intervened by acupuncture plus Ma Zi Ren pill, while the control group was by Ma Zi Ren pill alone. The symptoms of constipation were observed before and after intervention. Results: After 2-week treatment, the constipation condition was improved in both groups, and the improvement in the treatment group was statistically more significant than that in the control group(P<0.05); respectively two weeks and a month after the intervention, the treatment group was superior to the control group in comparing the constipation score(P<0.05). However, acupuncture didn't show marked effect in improving defecation speed, initial defecation time, and spontaneous discharge frequency. The treatment group had a significantly higher short-term markedly-effective rate compared with the control group(P<0.05); the long-term therapeutic efficacy of the treatment group was significantly higher than that of the control group(P<0.05). The adverse events happened in the treatment group were significantly less than those in the control group(P<0.05). Conclusion: Acupuncture at specific acupoints plus patent Chinese medicine can produce a content therapeutic efficacy.