Learn More
PURPOSE To evaluate the accuracy of noncycloplegic autorefraction in a representative sample of school-age children in China. METHODS Refractive error was measured with an autorefractor, both before and after cycloplegia induced with cyclopentolate, in a population-based sample of 4973 children between the ages of 7 and 18 years. Spherical equivalent(More)
PURPOSE To assess the progression of refractive error and the incidence of myopia in school-age children in the Shunyi District of Beijing, China. DESIGN A longitudinal cohort study. METHODS A population-based sample of 4,662 children initially examined in 1998 at ages 5 to 13 years was reexamined between September and November, 2000. Refractive error(More)
The objective of the present study was to investigate the properties of chitosan-gelatin membranes or scaffolds, which were modified by incorporation of hyaluronic acid in the surface or bulk phase through co-crosslinking with N,N-(3-dimethylamino-propyl)-N'-ethyl carbodiimide (EDC) and N-hydroxysuccinimide (NHS) in 2-morpholinoethane sulfonic acid (MES)(More)
PURPOSE To investigate whether peripapillary choroidal thickness in perimetrically affected eyes of primary open-angle glaucoma (POAG) patients differs from that in perimetrically unaffected fellow eyes and eyes of healthy controls. DESIGN Retrospective, comparative, cross-sectional study. METHODS Thirty-one POAG patients with unilateral visual field(More)
OBJECTIVE To compare peripapillary choroidal thickness (CT) between primary open angle glaucoma (POAG) and normal subjects using enhanced depth imaging optical coherence tomography (EDI-OCT). METHODS This research was a cross-sectional study. A 360-degree 3.4 mm diameter peripapillary circle scan was performed for retinal nerve fiber layer (RNFL)(More)
Chitosan-gelatin hybrid polymer network scaffolds were prepared via the freeze-drying technique by using the ice microparticle as a porogen. Monolayer and bilayer scaffolds were obtained by using different pre-freezing methods. The novel bilayer scaffolds were prepared via contact with -56 degrees C lyophilizing plate directly, then lyophilized. The(More)
Strain H2, an attenuated live hepatitis A virus (HAV), was derived from the fecal specimen of a patient with hepatitis A in Hangzhou, China. After isolation and passage in a culture of newborn monkey kidney cells, adaptation to grow in human lung diploid cells (KMB17), and serial passage at a low temperature (32 degrees C) in KMB17 cells, this strain became(More)
In this study, L929 cell adhesion, proliferation and apoptosis were investigated on chitosan (CS) and chitosan-gelatin (CS-Gel) membranes having different degrees of deacetylation (DD). The mitochondrial activity [3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyl tetrazolium bromide] assay results demonstrated that the DD played a key role in the L929 cell(More)
Ventilatory function was measured twice daily on 46 healthy children aged 8-14 years on at least 7 days for each child during a 4-week period at a northwestern New Jersey residential summer camp in 1988. The highest 1-hr O3 concentration was 150 ppb, while the highest 12-hr H+ concentration (as H2SO4) was 18.6 micrograms/m3. The highest temperature-humidity(More)