Comparative Study of Polymerization Environment for Hydrogel Ophthalmic Lens

Duck-Hyun Kim; A-Young Sung

Korean Journal of Materials Research, Vol.28, No.12, 696-701, December, 2018

DOI10.3740/MRSK.2018.28.12.696 Export Citation

Comparative Study of Polymerization Environment for Hydrogel Ophthalmic Lens

Duck-Hyun Kim, and A-Young Sung^†

Department of Optometry & Vision Science, Catholic University of Daegu, Gyeoungsan, Gyeoungbuk 38430, Republic of Korea

E-mail:

This study is carried out to evaluate the commercial feasibility of the room temperature and thermal polymerization method as a lens manufacturing method. All samples are found to be transparent after polymerization, thereby indicating that their physical and surface properties are suitable for hydrogel ophthalmic lenses. The optical and physical properties of the lenses are compared. The water content of the samples that are prepared via a room temperature polymerization process decreases with the addition of MMA as compared to the water content of the samples that are prepared via thermal polymerization. When MMA and DMA are used as an additive for improving functionality, the wettability of the lenses increases. By measuring the AFM, the surface roughness is shown to improve more than MMA and DMA. Therefore, it is judged to be an appropriate process for manufacturing hydrogel lenses with high functionality.

Keywords:thermal polymerization;room temperature polymerization;water content;wettability;ophthalmic lenses

[References]

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[1] Alipour F, Khaheshi S, Soleimanzadeh M, Heidarzadeh S, Heydarzadeh S, J. Ophthalmic Vision Res., 12, 193 (2017)

[2] Da Vinci L, Am J Optom, 30, 41 (1953)

[3] The history of contact lenses. On the Web. Retrieved October 18, 2018 from http://www.eyetopics.com/thehistory-of-contact-lenses/.

[4] Mandell RB, Contact lens parctice, 4th ed, p. 43 Springfield, IL: Charles C Thomas (1988).

[5] William HW, Life-enhancing plastics, p. 78, Imperial College Press (2004).

[6] Tuohy KM, U.S. Patent No. 2,510,438. Washington, DC: U.S. Patent and Trademark Office (1950).

[7] Wichterle O, Lim D, Nature, 185, 117 (1960)

[8] Wichterle O, U.S. Patent No. 3,660,545. Washington, DC: U.S. Patent and Trademark Office. (1972).

[9] Wichterle O, U.S. Patent No. 3,496,254. Washington, DC: U.S. Patent and Trademark Office. (1970).

[10] Schein OD, Glynn RJ, Poggio EC, Seddon JM, Kenyon KR, Microbial Keratitis Study Group, N. Engl. J. Med., 321, 773 (1989).

[11] Buehler PO, Schein OD, Stamler JF, Verdier DD, Katz J, Arch. Ophthalmol., 110, 1555 (1992)

[12] Dart JKG, Stapleton F, Minassian D, The Lancet, 338, 650 (1991)

[13] Poggio EC, Glynn RJ, Schein OD, Seddon JM, Shannon MJ, Scardino VA, Kenyon KR, N. Engl. J. Med., 321, 779 (1989)

[14] Schein OD, Poggio EC, Cornea, 9, S59 (1990)

[15] Sung AY, Kim TH, Kong JI, J. Korean Ophthalmic Opt. Soc., 11, 49 (2006)

[16] Cho SA, Park SY, Kim TH, Sung AY, Korean J. Vis. Sci.,, 14, 69 (2012)

[17] Lee MJ, Sung AY, Kim TH, J. Korean Ophthalmic Opt. Soc., 19, 43 (2014)

[18] Kim DH, Sung AY, Kim TH, Korean J. Vis. Sci., 16, 89 (2014)

[19] Kim DH, Sung AY, Korean J. Vis. Sci., 17, 57 (2015)

[20] Kim TH, Ye KH, Sung AY, J. Korean Chem. Soc., 53, 391 (2009)

[21] Efron N, Elsevier Health Sciences. (2016).

[22] Maldonado-Codina C, Efron N, A review. Optometry in Practice, 4, 101 (2003).

[23] Feurer B, U.S. Patent No. 4,390,482. 28 Jun. 1983.

[24] Blum RD, Scott R, Howard PS, U.S. Patent No. 4,919,850. 24 Apr. 1990.

[25] McBrierty, Vincent, John M, Werner B, U.S. Patent No. 5,154,861. 13 Oct. 1992.

[26] Molock FF, Ivan MN, James DF, U.S. Patent No. 5,681,871. 28 Oct. 1997.

[27] Sung AY, Kim TH, J. Nanosci. Nanotechnol., 12, 5210 (2012)

[28] Harvey B, Thomas, U.S. Patent No. 4,711,943. 8 Dec. 1987.

[29] Menzies KL, Lyndon J, Optom. Vis. Sci., 87, 387 (2010)

[30] Lee MJ, Sung AY, Kim TH, J. Korean Ophthalmic Opt. Soc., 19, 43 (2014)

[31] Kim DH, Seok JW, Sung AY, J. Chosun Nat. Sci., 10, 148 (2017)