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Figure 1.

The viscosity of eye drops A, B, C, D and Unidexa depending on torque (n = 3).
The viscosity of eye drops A, B, C, D and Unidexa depending on torque (n = 3).

Figure 2.

Hemolysis in different NaCl solutions.
Hemolysis in different NaCl solutions.

Figure 3.

Absorbance of different NaCl solutions at 550 nm.
Absorbance of different NaCl solutions at 550 nm.

Figure 4.

Absorbance of different eye drops at 550 nm.
Absorbance of different eye drops at 550 nm.

Eye drops A composition.

Dexamethasone 0.05 g
Sodium chloride 0.399 g
Carbethopendecinium bromide 2.5 g
Water for injections ad 50.0 g

Compositions of solutions for monitoring hemolysis.

Composition of solutions (ml) The concentration of NaCl solutions (%)
1.0% 0.9% 0.8% 0.7% 0.6% 0.5% 0.4% 0.3% 0.2% 0.1%
1% NaCl solution 4.5 4.0 3.5 3.0 2.5 2.0 1.5 1.0 0.5 0
Water for injections 0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5
RBC suspension 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5

Measured pH values of eye drops, the density of eye drops (pycnometrically), and their surface tension (stalagmometrically) – an average of six measurements.

Eye drops pH Density (g cm−3) Surface tension (N m−1)
A 6.626 1.0088 70.9313
B (Ch) 5.878 0.9953 70.5043
C 7.400 1.0059 35.0392
D (Ch) 5.800 1.0030 63.3394
Unidexa 0.1% 6.757 1.0094 36.9939

Eye drops C composition.

Dexamethasone sodium phosphate 0.1 g
Sodium chloride 0.799 g
Carbethopendecinium bromide 1.08 g
Water for injections ad 100.0 g

Eye drops B composition (with chitosan).

Dexamethasone 0.05 g
Chitosan LMW 0.05 g
Lactic acid 80% 0.5 g
Water for injections ad 50.0 g
Sodium hydroxide q.s.

Eye drops D composition (with chitosan).

Dexamethasone sodium phosphate 0.1 g
Chitosan LMW 0.1 g
Lactic acid 80% 1.0 g
Water for injections ad 100.0 g
Sodium hydroxide q.s.
eISSN:
2453-6725
Idioma:
Inglés
Calendario de la edición:
2 veces al año
Temas de la revista:
Pharmacy, other