Flow resistance was measured as bovine and primate aqueous humor was passed through Nuclepore polycarbonate filters having flow dimensions similar to those found within the juxtacanalicular meshwork of the aqueous outflow network. The results indicate that aqueous humor has a greater flow resistance than isotonic saline; this greater resistance is attributable to proteins or glycoproteins in aq...

Intraocular pressure (IOP) decreases in rabbits 1 day after superior cervical ganglionectomy. It was hypothesized that this IOP decrease was caused by an accumulation of norepinephrine (NE) released from the iris-ciliary body into the aqueous humor during nerve degeneration. Direct measurement of aqueous humor NE concentration, however, was not successful because of the technical difficulty. In...

It is suggested that life originated in a three-step process referred to as the jigsaw model. RNA, proteins, or similar organic molecules polymerized in a dehydrated carbon-rich environment, on surfaces in a carbonrich environment, or in another environment where polymerization occurs. These polymers subsequently entered an aqueous environment where they folded into compact structures. It is ar...

Photochemical processing of aqueous atmospheric brown carbon R. Zhao, A. K. Y. Lee, L. Huang, X. Li, F. Yang, and J. P. D. Abbatt Department of Chemistry, University of Toronto, 80 St. George Street, Toronto, ON, Canada Atmospheric Science and Technology Directorate/Science and Technology Branch, Environment Canada, Toronto, Canada School of Chemistry and Environment, Beihang University, Beijin...

Abstract The Front Cover shows a single near‐infrared dye being laser‐excited and dimly fluorescing in an aqueous biological environment compared to bound albumin brightly the same environment. designed by Karina Kapusta. Read full text of Research Article at 10.1002/cptc.202200127 .

Topical administration of 1% vanadate in a formulation designed to enhance penetration lowered intraocular pressure in monkeys' eyes. The decrease in intraocular pressure was associated with significant decreases in aqueous humor flow. Tonographic outflow facility was unaltered by topical vanadate.

FOR many years considerable attention has been focused on the problem of the origin and circulation ofthe aqueous humour under normal and pathological conditions. One of the methods applied to this study is the detection within the eye of dyes which enter the anterior chamber across the bloodaqueous baffler-a method first suggested by Ehrlich (1882) when he observed that fluorescein injected in...

PURPOSE The objective of the study was to compare the intraocular penetration levels of the newer fluoroquinolones, moxifloxacin, gatifloxacin, and levofloxacin in the rabbit's cornea, aqueous humor, and conjunctiva after topical instillation. METHODS 0.5% moxifloxacin, 0.3% gatifloxacin, and 0.5% levofloxacin were instilled in random sequence in both eyes of nine New Zealand White rabbits at...