Surface AFM microscopy of unworn and worn samples of silicone hydrogel contact lenses

Journal of Biomedical Materials Research - Part B Applied Biomaterials

Volumn 88, Issue 1, 2009, Pages 75-82

  Gonzalez Meijome J M ^a   Lopez Alemany A ^b   Almeida, J B ^b   Parafita, M A ^c  

^a UNIVERSITY OF MINHO   (Portugal)

^b UNIVERSITY OF VALENCIA   (Spain)

^c UNIVERSITY OF SANTIAGO DE COMPOSTELA   (Spain)

Author keywords

Atomic force microscopy; Contact lens; Degradation; Surface characterization; Wear

Indexed keywords

ATOMIC FORCES; EXPERIMENTAL SET-UP; MACRO PORES; ROOT MEAN SQUARE VALUES; SHORT PERIODS; SILICONE HYDROGELS; SURFACE CHARACTERIZATION; TOPOGRAPHIC CHANGES; WEAR;

ATOMIC FORCE MICROSCOPY; ATOMIC PHYSICS; ATOMS; COLLOIDS; CONTACT LENSES; FRICTION; HYDROGELS; LENSES; OPTICAL INSTRUMENTS; PHOTORESISTS; QUALITY CONTROL; SILICONES; SURFACE PROPERTIES; SURFACE ROUGHNESS; SURFACE TOPOGRAPHY;

SURFACES;

SILICON;

ARTICLE; ATOMIC FORCE MICROSCOPY; CLINICAL EVALUATION; CONTACT LENS; CONTROLLED STUDY; HYDROGEL; QUALITATIVE ANALYSIS; QUANTITATIVE ANALYSIS; TOPOGRAPHY;

CONTACT LENSES; CONTACT LENSES, HYDROPHILIC; HYDROGEL; HYDROGELS; MATERIALS TESTING; MICROSCOPY, ATOMIC FORCE; PSEUDOMONAS AERUGINOSA; SILICON; SILICONES; SURFACE PROPERTIES; WETTABILITY;

EID: 57349120514     PISSN: 15524973     EISSN: 15524981     Source Type: Journal    
DOI: 10.1002/jbm.b.31153     Document Type: Article

References (29)

1. Brennan NA, Coles MLC. Deposits and symptomatology with soft contact lens wear. Int Contact Lens Clinic 2000;27:75-100.
2. Gonzalez-Meijome JM, Lopez-Alemany A, Almeida JB, Parafita MA, Refojo MF. Microscopic observation of unworn siloxane-hydrogel soft contact lenses by atomic force microscopy. J Biomed Mater Res B Appl Biomater 2006;76:412-418.
3. Gonzalez-Meijome JM, Lopez-Alemany A, Almeida JB, Parafita MA, Refojo MF. Microscopic observations of superficial ultrastructure of unworn siloxane-hydrogel contact lenses by cryo-scanning electron microscopy. J Biomed Mater Res B Appl Biomater 2006;76:419-423.
4. Maldonado-Codina C, Morgan PB, Efron N, Canry JC. Characterization of the surface of conventional hydrogel and silicone hydrogel contact lenses by time-of-flight secondary ion mass spectrometry. Optom Vis Sci 2004;81:455-460.
5. Bhatia S, Goldberg EP, Enns JB. Examination of contact lens surfaces by Atomic Force Microscope (AFM). CLAO J 1997;23:264-269.
6. Gonzalez-Meijome J, Lopez-Alemany A, Almeida J, Parafita M. Microscopic observations of silicone hydrogels with three different techniques. Invest Ophthalmol Vis Sci 2005;46:909.
7. Jones L, Senchyna M, Glasier MA, Schickler J, Forbes I, Louie D, May C. Lysozyme and lipid deposition on silicone hydrogel contact lens materials. Eye Contact Lens 2003;29:S75-S79.
8. Baguet J, Sommer F, Duc TM. Imaging surfaces of hydrophilic contact lenses with the atomic force microscope. Biomaterials 1993;14:279-284.
9. Kim SH, Opdahl A, Marmo C, Somorjai GA. AFM and SFG studies of pHEMA-based hydrogel contact lens surfaces in saline solution: Adhesion, friction, and the presence of non-crosslinked polymer chains at the surface. Biomaterials 2002;23:1657-1666.
10. Baguet J, Sommer F, Claudon-Eyl V, Duc TM. Characterization of lacrymal component accumulation on worn soft contact lens surfaces by atomic force microscopy. Biomaterials 1995;16:3-9.
11. Tighe B. Silicone hydrogels: Structure, properties and behaviour. In: Sweeney DF, editor. Silicone Hydrogels. Continuous-Wear Contact Lenses. London: Butterworth-Heinemann; 2004. pp 1-27.
12. Gonzalez-Meijome JM. Objective analysis of properties and material degradation in contact lens polymers using different techniques. PhD Thesis: University of Minho 2007; Available from: http://hdl.handle.net/1822/6757.
13. Lopez-Alemany A, Compan V, Refojo MF. Porous structure of purevision versus focus night & day and conventional hydrogel contact lenses. J Biomed Mater Res 2002;63:319-325.
14. Guryca V, Hobzova R, Pradny M, Sirc J, Michalek J. Surface morphology of contact lenses probed with microscopy techniques. Cont Lens Anterior Eye 2007;30:215-222.
15. Gonzalez-Meijome J, Lopez-Alemany A Jr., Almeida JB, Parafita MA. Consistency of surface analysis of silicone-hydrogel contact lens polymers with Atomic Force Microscopy. Invest Ophthalmol Vis Sci 2006;47:2387.
16. Goldberg EP, Bhatia S, Enns JB. Hydrogel contact lens-corneal interactions: A new mechanism for deposit formation and corneal injury. CLAO J 1997;23:243-248.
17. Gonzalez-Meijome JM, Jorge J, Almeida JB, Parafita MA. Contact lens fitting profile in Portugal in 2005: Strategies for first fits and refits. Eye Contact Lens 2007;33:81-88.
18. Subbaraman LN, Glasier MA, Senchyna M, Sheardown H, Jones L. Kinetics of in vitro lysozyme deposition on silicone hydrogel. PMMA, and FDA groups I, II, and IV contact lens materials. Curr Eye Res 2006;31:787-796.
19. Bontempo AR, Rapp J. Lipid deposits on hydrophilic and rigid gas permeable contact lenses. CLAO J 1994;20:242-245.
20. Henriques M, Sousa C, Lira M, Elisabete M, Oliveira R, Azeredo J. Adhesion of Pseudomonas aeruginosa and Staphylococcus epidermidis to silicone-hydrogel contact lenses. Optom Vis Sci 2005;82:446-450.
21. Merrit K, An YH. Factors influencing bacterial adhesion. In: An YH, Friedman RJ, editors. Handbook of Bacterial Adhesion: Principles, Methods and Applications. Totowa, NJ: Humana; 2000. pp 53-98.
22. Vermeltfoort PB, van der Mei HC, Busscher HJ, Hooymans JM, Bruinsma GM. Physicochemical factors influencing bacterial transfer from contact lenses to surfaces with different roughness and wettability. J Biomed Mater Res B Appl Biomater 2004;71:336-342.
23. Vermeltfoort PB, Rustema-Abbing M, de Vries J, Bruinsma GM, Busscher HJ, van der Linden ML, Hooymans JM, van der Mei HC. Influence of day and night wear on surface properties of silicone hydrogel contact lenses and bacterial adhesion. Cornea 2006;25:516-523.
24. Boles SF, Refojo MF, Leong FL. Attachment of Pseudomonas to human-worn, disposable etafilcon A contact lenses. Cornea 1992;11:47-52.
25. Duran JA, Refojo MF, Gipson IK, Kenyon KR. Pseudomonas attachment to new hydrogel contact lenses. Arch Ophthalmol 1987;105:106-109.
26. Bruinsma GM, Rustema-Abbing M, de Vries J, Stegenga B, van der Mei HC, van der Linden ML, Hooymans JM, Busscher HJ. Influence of wear and overwear on surface properties of etafilcon A contact lenses and adhesion of Pseudomonas aeruginosa. Invest Ophthalmol Vis Sci 2002;43:3646-3653.
27. Michaud L, Giasson CJ. Overwear of contact lenses: Increased severity of clinical signs as a function of protein adsorption. Optom Vis Sci 2002;79:184-192.
28. Beattie TK, Tomlinson A, McFadyen AK. Attachment of Acanthamoeba to first- and second-generation silicone hydrogel contact lenses. Ophthalmology 2006;113:117-125.
29. Beattie TK, Tomlinson A, Seal DV. Surface treatment or material characteristic: The reason for the high level of Acanthamoeba attachment to silicone hydrogel contact lenses. Eye Contact Lens 2003;29:S40-S43.