|About this Abstract
||Materials Science & Technology 2019
||Late News Poster Session
||P1-19: Enhancing Hydrophilicity of Prosthetic Eyes
||Karnika De Silva, Keith Pine
|On-Site Speaker (Planned)
||Karnika De Silva
The eyelids are important structures for the successful wear of prosthetic eyes as they retain the prosthesis in the socket and distribute tears and socket secretions during the action of blinking. Prosthetic eyes are made from (poly) methyl methacrylate(PMMA) which is hydrophobic and previous research suggests that a more hydrophilic surface is likely to result in a more comfortable prosthetic eye.
A research plan was developed and a number of potential solutions was discussed before the team focussed on working with various mixtures of PMMA and (Poly) ethylene glycol (PEG) derivatives. Each derivative was tested for hydrophilicity, water absorption, and colour difference when exposed to UV light. Ethylene glycol dimethacrylate (EGDMA) emerged as the most promising material and another set of experiments was carried out to determine the best PMMA/EGDMA ratio. Ethics approval has been granted and 20 anophthalmic volunteers are currently wearing EGDMA prosthetic eyes under test conditions.