Biomaterials Applications; Contact Lenses

Biomaterials Applications Contact Lenses 4

BiomaterialsApplications Contact Lenses

Exampleof biomaterials application today

Contactlens is a thin lens positioned directly on the exterior part of theeye(Rimmer,2011).Contact lenses are medical devices that can be put on to correctvision, or for cosmetic or therapeutic reasons. They are effectivereplacements for the concave lens that people have been wearing inthe recent past. When judged against the spectacles, contact lensesclassically avails enhanced peripheral vision, and they do not gathermoisture which makes them ideal for sports and other outdooractivities.

Developmentalhistory

Leonardoda Vinci is frequently commented for introducing the concept ofcontact lenses in his 1508 Codexof the eye, Manual D.RenéDescartes projected an additional idea in 1636 basing on the earlierproposed concept by highlighting a glass tube filled with liquid ispositioned in direct contact with the cornea(Rimmer,2011).In 1801, Thomas Young developed a fundamental pair of contact lenseson the replica of Descartes. He utilized wax to attach water-filledlenses to his eyes which neutralized his own refractive power whichmade him to correct it with another pair of lenses.

Designrequirements

Productionof the contact lenses requires spin cast lenses which are softcontact lens produced by whirling liquid silicone through revolvingmold at a very high speed. The diamond turning is cut and polishedover the CNC lathe designed with industrial grade diamond standards.Molding is used to produce various strands of soft contact lenses(Rimmer,2011).

Advantages

Itis not affected by moisture which makes it usable even when theperson is sweating or walking through rain(Rimmer,2011).It therefore avails opportunities for the person to engage in normalactivities like any other person.

Limitations

Ifabused the effects of these technology are very devastating asresearch has revealed that 5% of the wearers get affected each year(Rimmer,2011).

References

Rimmer,S. (2011). Biomedicalhydrogels.Cambridge, UK: Woodhead Publishing.