Abstract:
Universal ophthalmic pharmaceutical vehicles which become viscous on contacting the eye are disclosed. Ophthalmic compositions of the universal vehicle and a pharmaceutically active drug are also disclosed.
Abstract:
The tackiness associated with certain soft acrylic polymers can be reduced by plasma treatment of the polymer surface. This is particularly useful with regard to intraocular lenses (IOLs), especially foldable IOLs, which are made from such soft acrylic polymers.
Abstract:
Water-soluble borate-polyol complexes are useful as buffers and/or antimicrobials in aqueous ophthalmic compositions, including those containing polyvinyl alcohol. These compositions have greater antimicrobial activity than comparable compositions containing typical borate buffers and unexpectedly increase the antimicrobial efficacy of other antimicrobial agents when used in combination. In addition, use of the borate-polyol complexes avoids the incompatibility problem typically associated with the combination of borate buffer and polyvinyl alcohol; therefore, the compositions disclosed herein may also contain polyvinyl alcohol.
Abstract:
A unit dose dispenser (10) for dispensing a composition (15) includes a compressible, air filled container (12) in communication with an open end (14a) of a tube (14) filled with the composition (15). The opposite end (19) of the tube (14) through which the composition (15) is dispensed is sealed with a removable closure cap (17) to maintain sterility of the composition (15) prior to use. By removing the cap (17) and applying external pressure (F) to compress the container (12), air is forced to enter the tube (14) and eject, by displacement, composition (15) from the tube (14). To completely eject the predetermined dosage (15) that completely fills the tube (14), the volume of air or other gaseous propellant within the compressible container (12) is greater than the volume of the unit dose (15).
Abstract:
A multiple use container for dispensing fluids, particularly preservative free preparations in variable doses, includes a squeezable container for holding the fluid. A dispenser assembly associated with an exit opening from the container includes a hollow dispensing tip which encloses a fluid valve. The fluid valve utilizes a piston head which sealingly seats in a valve seat. A resilient biasing means holds the piston head in a normally sealed or closed position. A second opening in communication with the interior of the bottle is covered by a hydrophobic filter having a pore size that prevents microbial contaminants from entering the container but prohibits fluid from leaving the container. The bottle is squeezed to force fluid to overcome the biasing pressure of the fluid valve to dispense fluid from the bottle. Upon release of that pressure, the fluid valve closes and air passes through the filter to replace the dispensed fluid. The air entering the container is sterilized by the filter.
Abstract:
Ophthalmic pharmaceutical compositions useful in controlling elevated intraocular pressure associated with glaucoma and other ophthalmic conditions are described. A method of controlling elevated intraocular pressure with those compositions is also described. The compositions contain a combination of an alpha-2 agonist (e.g., para-amino clonidine) and a beta blocker (e.g., betaxolol).
Abstract:
Contact lens cleaning compositions containing a combination of an enzyme and a particulate abrasive material, and a method of cleaning contact lenses with such compositions. The compositions are capable of cleaning soiled contact lenses very rapidly and completely due to a favorable interaction between the enzyme and abrasive components thereof.
Abstract:
Compounds and methods for treating ocular tissues are disclosed. The methods utilize viscoelastic compositions containing certain compounds having an anti-inflammatory and anti-oxidant moiety covalently linked by an amide or ester bond. The compounds are useful in preventing and treating inflammatory and proliferative disorders through several mechanisms.
Abstract:
A surgical handpiece having at least two lumens mounted to a body. One lumen is used for aspiration, the second lumen is used to inject heated surgical fluid for liquefying a cataractous lens. A portion of the second lumen is surrounded by an insulated heating element that heats the surgical fluid as it passes through the second lumen. The handpiece may also contains a device for delivering the surgical fluid through the second lumen in metered pulses of a defined volume.