Wettability and Surface Morphology Investigation of RGP Eye Contact Lens Irradiated by 193 nm Excimer Laser

Tayebeh Ariyafar; Ali Pourakbar Saffar; Peyman Tajalli; Habib Tajalli

doi:10.4236/oalib.1101463

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Open Access Library Journal > Vol.2 No.4, April 2015

Wettability and Surface Morphology Investigation of RGP Eye Contact Lens Irradiated by 193 nm Excimer Laser ()

Tayebeh Ariyafar¹, Ali Pourakbar Saffar^2*, Peyman Tajalli¹, Habib Tajalli³

¹Physics Department, Islamic Azad University, East Azarbaijan Science and Research Branch, Tabriz, Iran.
²Laser Laboratory, Research Center of Informatic Industries, Tehran, Iran.
³Excellence in Photonics, University of Tabriz, Tabriz, Iran.

DOI: 10.4236/oalib.1101463 PDF HTML XML 767 Downloads 1,163 Views

Abstract

In this work, Rigid gas permeable (RGP) contact lenses based on Fluoro Silicone Acrylate, were irradiated by using 193 nm ArFexcimer laser, at 1 Hz pulse repetition rate with 75 mJ/pulse energy to improve surface wettability. We investigated the morphology of the ablated area by imaging the surface modification with Atomic force microscopy (AFM) with roughness analysis and Scanning electron microscopy (SEM). Characterization techniques were performed too via contact angle measurement in order to determine the surface wettability and Fourier transform infra-red spectroscopy (FTIR). The morphological appearance of samples reveals the effect of a photochemical and photothermal ablation mechanism. The laser irradiation without changing the chemical bonds has modified the lens surface properties and increased the surface hydrophilicity. Morphological surface changes with laser exposure and the water contact angle decreases as the surface of the fluorosilicone acrylate material is modified.

Keywords

Contact Lens, Excimer Laser, Hydrophilicity, Microscopy, Spectroscopy

Share and Cite:

Ariyafar, T. , Pourakbar Saffar, A. , Tajalli, P. and Tajalli, H. (2015) Wettability and Surface Morphology Investigation of RGP Eye Contact Lens Irradiated by 193 nm Excimer Laser. Open Access Library Journal, 2, 1-8. doi: 10.4236/oalib.1101463.

Conflicts of Interest

The authors declare no conflicts of interest.

References

[1]	Hyung, S.S., et al. (2009) Surface Modification of Rigid Gas Permeable Contact Lens Treated by Using a Low-Temperature Plasma in Air. Journal of the Korean Physical Society, 55, 2436-2440. http://dx.doi.org/10.3938/jkps.55.2436
[2]	Wang, Y., et al. (2013) Plasma Surface Modification of Rigid Contact Lenses Decreases Bacterial Adhesion. Eye & Contact Lens: Science & Clinical Practice, 39, 376-380. http://dx.doi.org/10.1097/ICL.0b013e31829e8f73
[3]	Bhatia, S., Goldberg, E.P. and Enns, J.B. (1997) Examination of Contact Lens Surfaces by Atomic Force Microscope. CLAO Journal, 23, 264-269.
[4]	Giraldez, M.J., Serra, C., Lira, M., et al. (2010) Soft Contact Lens Surface Profile by Atomic Force Microscopy. Optometry and Vision Science, 87, 475-481. http://dx.doi.org/10.1097/OPX.0b013e3181e170c5
[5]	Guryča, V., Hobzová, R., et al. (2007) Surface Morphology of Contact Lenses Probed with Microscopy Techniques. Contact Lens & Anterior Eye, 30, 215-222. http://dx.doi.org/10.1016/j.clae.2007.02.010
[6]	Srinivasan, R. and Braren, B. (1989) Ultraviolet Laser Ablation of Organic Polymers. Chemical Review, 89, 1303-1308. http://dx.doi.org/10.1021/cr00096a003
[7]	Rabek, J.F. (1996) Photodegradation of Polymer. Springer-Verlag, Heidelberg. http://dx.doi.org/10.1007/978-3-642-80090-0
[8]	Rubahan, H.G. (1999) Laser Applications in Surface Science and Technology. Wiley, New York.
[9]	Zhang, Z., Hu, X. and Luo, Z. (1996) Wavelength Sensitivity of Photo-Oxidation of Polypropylene. Polymer Degradation and Stability, 51, 93-97. http://dx.doi.org/10.1016/0141-3910(95)00210-3
[10]	Torikai, A. and Hasegawa, H. (1998) Wavelength Effect on the Accelerated Photodegradation of Polymethylmethacrylate. Polymer Degradation and Stability, 61, 361-364. http://dx.doi.org/10.1016/S0141-3910(97)00119-5
[11]	Gesenhues, U. (2000) Influence of Titanium Dioxide Pigments on the Photodegradation of Poly(vinyl chloride). Polymer Degradation and Stability, 68, 185-196. http://dx.doi.org/10.1016/S0141-3910(99)00184-6
[12]	Geretovsky, Z., Hopp, B., Bertoti, I. and Boyd, I.W. (2002) Photodegradation of Polycarbonate under Narrow Band Irradiation at 172 nm. Applied Surface Science, 186, 85-90. http://dx.doi.org/10.1016/S0169-4332(01)00615-8
[13]	Lippert, T. and Dickinson, J.T. (2003) Chemical and Spectroscopic Aspects of Polymer Ablation: Special Features and Novel Directions. Chemical Review, 103, 453-486. http://dx.doi.org/10.1021/cr010460q
[14]	Panchenko, A.N., Shulepov, M.A., Tel’minov, A.E., Zakharov, L.A., Paletsky, A.A. and Bulgakova, N.M. (2011) Pulsed IR Laser Ablation of Organic Polymers in Air: Shielding Effects and Plasma Pipe Formation. Journal of Physics D: Applied Physics, 44, Article ID: 385201. http://dx.doi.org/10.1088/0022-3727/44/38/385201
[15]	Wee, S.W. and Park, S.M. (2001) Laser Ablation of Poly(methyl methacrylate) at 266 nm. Bulletin of the Korean Chemical Society, 22, 914-916.
[16]	Dorronsoro, C., Siegel, J., Remon, L. and Marcos, S. (2008) Suitability of Filofocon A and PMMA for Experimental Models in Excimer Laser Ablation Refractive Surgery. Optics Express, 16, 20955-20967. http://dx.doi.org/10.1364/OE.16.020955
[17]	Berns, M.W., Chao, L., Giebel, A.W., Liaw, L.H., Andrews, J. and VerSteeg, B. (1999) Human Corneal Ablation Threshold Using the 193-nm ArF Excimer Laser. Investigative Ophthalmology & Visual Science, 40, 826-830.
[18]	Spyratou, E., Asproudis, I., Tsoutsi, D., Bacharis, C., Moutsouris, K., Makropoulou, M. and Serafetinides, A.A. (2010) UV Laser Ablation of Intraocular Lenses: SEM and AFM Microscopy Examination of the Biomaterial Surface. Applied Surface Science, 256, 2539-2545. http://dx.doi.org/10.1016/j.apsusc.2009.10.101
[19]	Nakagawa, T., Maeda, N., Cekic, O., Fujikado, T., Tano, Y., Murakami, A., et al. (2008) Corneal Ablation with New 193 nm Solid-State Laser: Preliminary Experiments. Journal of Cataract Refractive Surgery, 34, 1019-1023. http://dx.doi.org/10.1016/j.jcrs.2008.02.034
[20]	Wisniewski, M., Sionkowska, A., Kaczmarek, H., Skopinska, J., Lazare, S. and Tokarev, V. (2006) The Influence of KrF Excimer Laser Irradiation on the Surface of Collagen and Collagen/PVP Films. International Journal of Photoenergy, 2006, Article ID: 35126.
[21]	Jaleh, B., Parvin, P., Sheikh, N., Zamanipour, Z. and Sajad, B. (2007) Hydrophilicity and Morphological Investigation of Polycarbonate Irradiated by ArF Excimer Laser. Nuclear Instruments and Methods in Physics Research Section B, 265, 330-333. http://dx.doi.org/10.1016/j.nimb.2007.08.067
[22]	Kowal, A. (2005) Application of STM and AFM Techniques for the Investigation of Corrosion Processes and Materials Protection. Materials Protection, 46, 44-46.
[23]	Saffar, A.P., Jaleh, B., Parvin, P., Wanichapichart, P. and Farshchi-Tabrizi, M. (2014) Surface Modification and Dielectric Response Investigation of Cellulose Acetate Membrane Treated by ArF Excimer Laser. Open Access Library Journal, 1, e488.
[24]	Tsilimbaris, M.K., Lesniewska, E., Lydataki, S., Le Grimellec, C., Goudonnet, J.P. and Pallikaris, I.G. (2000) The Use of Atomic Force Microscopy for the Observation of Corneal Epithelium Surface. Investigative Ophthalmology & Visual Science, 41, 680-686.