| Autor: |
Pitt WG; a Chemical Engineering Department , Brigham Young University , 350 Clyde Bldg, Provo , UT 84602 , USA., Zhao Y, Jack DR, Perez KX, Jones PW, Marelli R, Nelson JL, Pruitt JD |
| Jazyk: |
angličtina |
| Zdroj: |
Journal of biomaterials science. Polymer edition [J Biomater Sci Polym Ed] 2015; Vol. 26 (4), pp. 224-34. Date of Electronic Publication: 2015 Jan 02. |
| DOI: |
10.1080/09205063.2014.994947 |
| Abstrakt: |
Characterization of phospholipid release from an experimental reusable wear silicone hydrogel contact lens was performed to assess the possible use of these lenses for phospholipid delivery to increase eye comfort to patients who prefer reusable wear lenses. Contact lenses were loaded with 200 μg of radio-labeled 1,2-dimyristoyl-sn-glycero-3-phosphocholine (DMPC) from a solution of n-propanol. To simulate 30 days of diurnal use with overnight cleaning, these lenses were eluted for 16 h at 35 °C into artificial tear fluid (ATF), and then eluted at room temperature (~22 °C) for 8 h in one of three commercial contact lens cleaning systems. This was repeated for 30 days. The elution of DMPC into ATF was greater on the first day, followed by a fairly constant amount of elution each day thereafter. The type of cleaning system had a statistically significant effect on the elution rate during daily exposure to ATF. The rate of elution into cleaning solutions did not show any enhanced elution on the first day; there was a fairly constant elution rate. Again, the type of cleaning system significantly influenced the elution rate into the nightly cleaner. |
| Databáze: |
MEDLINE |
| Externí odkaz: |
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