| Project/Area Number |
26560243
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| Research Category |
Grant-in-Aid for Challenging Exploratory Research
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| Allocation Type | Multi-year Fund |
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| Research Field |
Biomedical engineering/Biomaterial science and engineering
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| Research Institution | Kyushu University |
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Principal Investigator |
ANNAKA MASAHIKO 九州大学, 理学(系)研究科(研究院), 教授 (40282446)
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| Co-Investigator(Kenkyū-buntansha) |
MATSUURA TOYOAKI 奈良県立医科大学, 医学部, 非常勤講師 (10238959)
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| Project Period (FY) |
2014-04-01 – 2016-03-31
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| Project Status |
Completed (Fiscal Year 2015)
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| Budget Amount *help |
¥3,640,000 (Direct Cost: ¥2,800,000、Indirect Cost: ¥840,000)
Fiscal Year 2015: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2014: ¥2,210,000 (Direct Cost: ¥1,700,000、Indirect Cost: ¥510,000)
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| Keywords | 水晶体 / 調節 / ハイドロゲル / 有機－無機ハイブリッドハイドロゲル / 化学架橋ゲル / 水晶体嚢充填材料 |
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| Outline of Final Research Achievements |
We focus on the development of a novel injectable accommodative lens for intraocular applications, which is based on a thermosensitive hydrophobically-modified poly(ethylene glycol) containing hydrophilized silica nanoparticles. By injection of elastic polymers into the capsular bag of the eye as a fluid, body temperature transforms the polymer into optically clear gel that has the shape of a full-sized biconvex and completely fills the capsular bag. Under the condition of uniform distribution of silica nanoparticles with small size (2-5 nm) in the gel matrix, an increase in refractive index up to 0.0667 were obtained for nanocomposite compared with native gel matrix without an increase in turbidity. This composite system could be formulated to match the modulus and the refractive index of the natural lens (~1.411). In filling the capsule, it might more closely resemble the action of the young, natural lens, eliminating the possibility of any intracapsular space for cell growth.
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