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Viscoelastic agent

Use of intracameral lidocaine has been introduced as a method of supplementing topical anesthesia during cataract surgery. Unpreserved 1% lidocaine is injected into the anterior chamber immediately after the paracentesis incision before injection of viscoelastic agent. [Pg.50]

Betaxolol is less effective than timolol or levobunolol in preventing elevations in lOP after cataract surgery, especially when a viscoelastic agent is used. Thus, it is probably not the agent of choice for this indication. [Pg.151]

Burke, S., Sugar, J. and Farber, M. D., Comparison of the effects of two viscoelastic agents, Healon and Viscoat, on postoperative intraocular pressure after penetrating keratoplasty, Ophthal. Surg., 21, 821,1990. [Pg.99]

During operations, viscoelastic agents act as a sort of physical shield. Many physical properties contribute to endothelial protection ... [Pg.54]

To provide the corneal endothelium with good protection, viscoelastic agents should ideally have high viscosity and elasticity at rest (zero shear rate). Such viscoelastic substances could protect the corneal endothelium from compression forces (Fig. 52). Additionally, the viscoelastic should have a steep pseudoplasticity curve, i.e., a quick viscosity reduction with increasing movement. Shear forces conducted to the corneal endothelium would, in this way, be minimized (Hammer 8c Burch, 1984). [Pg.54]

Table 11. Sensor output (mean mV standard deviation) of the viscoelastic agents proportional to the amplitude. Ten measurements were made of all preparations... Table 11. Sensor output (mean mV standard deviation) of the viscoelastic agents proportional to the amplitude. Ten measurements were made of all preparations...
Fig. 72. Injection of the lower-viscosity dispersive viscoelastic agent (violet) into the central region of the pupil to form a mound on the surface of the center of the cataractous lens... Fig. 72. Injection of the lower-viscosity dispersive viscoelastic agent (violet) into the central region of the pupil to form a mound on the surface of the center of the cataractous lens...
Fig. 73. Injection of the higher-viscosity cohesive agent (green) into the posterior center of the lower-viscosity dispersive viscoelastic agent continued injection pushes the dispersive agent upward and outward, finally pressurizing it into a smooth protective layer against the corneal endothelium... Fig. 73. Injection of the higher-viscosity cohesive agent (green) into the posterior center of the lower-viscosity dispersive viscoelastic agent continued injection pushes the dispersive agent upward and outward, finally pressurizing it into a smooth protective layer against the corneal endothelium...
A new surgical technique for deep stromae anterior lamellar keratoplasty was recently described using viscoelastic agents to separate the anterior corneal lamellar (Meller et al., 1999). [Pg.81]

Viscoelastic agents are highly rated surgical aids for the treatment of perforating bulbar injuries due to their anterior chamber stabilizing and tissue separating properties, decidedly contributing to a better overview at the operation site. [Pg.86]

Table 14. Break points of various viscoelastic agents (Poyer, Chan, Arshinoff, 1998) ... Table 14. Break points of various viscoelastic agents (Poyer, Chan, Arshinoff, 1998) ...
The break point (vacuum level at which bolus removal of the agent begins) of a viscoelastic agent is defined as having more than 25 % of the sample removed by a single vacuum level... [Pg.91]

Dick HB, Schwenn O, Fabian E, Neuhann T, Eisenmann D. Cartridge cracks with different viscoelastic agents (letter). J Cataract Refract Surg 1999 25 463-465 Dick HB, Krummenauer F, Vogel A, Pakula T, Pfeiffer N. Healon 5 a viscoadaptive formulation compared to Healon and Healon GV. J Cataract Refract Surg 2000 (in press)... [Pg.136]

Hedbys BO. The role of polysaccharide in corneal swelling. Exp Eye Res 1963 2 122-129 Hein SR Keates RH, Weber PA. Elimination of sodium hyaluronate-induced decrease in outflow facility with hyaluronidase. Ophthalmic Surg 1986 17 731-734 Henry JC, Olander K. Comparison of the effect of four viscoelastic agents on early postoperative intraocular pressure. J Cataract Refract Surg 1996 22 960-966 Herrington RG, Ball SF, Updegraff SA. Delayed sustained increase in intraocular pressure secondary to the use of polyacrylamide gel (Orcolon ) in the anterior chamber. Ophthalmic Surg 1993 24 658-662... [Pg.138]

McDermott ML, Edelhauser HR Drug binding of ophthalmic viscoelastic agents. Arch Ophthalmol 1989 107 261-263... [Pg.141]

Nguyen LK, Yee RW, Sigler SC, Ye H-S. Use of in vitro models of bovine corneal endothelial cells to determine the relative toxicity of viscoelastic agents. J Cataract Refract Surg 1992 18 7-13 Nimrod A, Ezra E, Ezov N, Nachum G, Parisada B. Absorption, distribution, metabolism, and excretion of bacteria-derived hyaluronic acid in rats and rabbits. J Ocular Pharmacol 1992 8 161-172 Norn MS. Peroperative protection of cornea and conjunctiva. Acta Ophthalmol (Copenh) 1981 59 587-594... [Pg.142]

Olson RJ. Cartridge cracks with different viscoelastic agents (letter). J Cataract Refract Surg 1999 25 465-466... [Pg.142]

Poyer JF, Chan KY, Arshinoff SA. New method to measure the retention of viscoelastic agents on a rabbit corneal endothelial cell line after irrigation and aspiration. J Cataract Refract Surg 1998 24 84-90... [Pg.143]

Wand M. Viscoelastic agent and the prevention of post-filtration flat anterior chamber. Ophthal Surg 1988 19 523-524... [Pg.146]

See other pages where Viscoelastic agent is mentioned: [Pg.635]    [Pg.266]    [Pg.268]    [Pg.5]    [Pg.15]    [Pg.33]    [Pg.49]    [Pg.56]    [Pg.81]    [Pg.83]    [Pg.92]    [Pg.133]    [Pg.143]   
See also in sourсe #XX -- [ Pg.268 ]



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