Aqueous humor collected from freshly enucleated bovine eyes was passed over a gelatin affinity column, and bound material was eluted with 4M urea. When fractionated by sodium dodecyl sulfate electrophoresis, the eluted material co-migrated with human plasma fibronectin and protein standards of approximately 220,000 daltons. Amino acid analyses demonstrated a composition similar to that of human...

IN a previous investigation a significant difference was found in the pressure response of the living and dead eyes of individual rabbits when a given volume of fluid was injected into the eye (Eisenlohr and Langham, 1962). An increase in the intra-ocular pressure of living animals was found to force blood from the eye and the amount lost per unit pressure increase was found to reach a maximum ...

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...

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...

A study was made in albino rabbits of the effect on aqueous humor dynamics of 100% oxygen, administered by face mask. A mean decrease in intraocular pressure of 4.9 mm Hg was found. This was accompanied by a decrease in episcleral venous pressure of 4.5 mm Hg. Anterior chamber aqueous humor flow decreased transiently after oxygen administration but returned to pre-oxygen levels after about 60 m...

Aqueous humor levels of pilocarpine and timolol in rabbits after administration of either 2% pilocarpine or 0.5% timolol in single-drug solutions were compared with the concentrations found after instillation of a fixed combination of 0.5% timolol and 2% pilocarpine drops. Time intervals considered were 15 min, 30 min, 1 hr, 4 hr, and 8 hr after application. Drug concentrations were analyzed in...

Topical administration of a 1% forskolin suspension significantly reduced intraocular pressure in cynomolgus monkey eyes. The fall in intraocular pressure was associated with a significant (P less than 0.01) decrease in aqueous humor flow measured by a fluorophotometric technique. No significant change was found in tonographic outflow facility or pupillary diameter. A loss of effect on intraocu...