Medicine:IOLVIP
The Intraocular Lens for Visually Impaired Patients (IOLVIP or IOL-VIP) is an intraocular lens system aiming to treat patients with poor central vision due to age related macular degeneration. The IOLVIP procedure involves the surgical implantation of a pair of lenses that magnify and divert the image using the principals of the Galilean telescope.[1] By arranging the lenses it is possible to direct the image to a different part of the eye than the fovea, which is the centre of the macula and is usually used for detailed vision. The magnified image is projected on to a part of the eye not normally used for detailed vision. Magnification and patient training are both necessary to allow useful vision from this part of the retina.
It is a procedure to give symptomatic relief rather than treat disease and is best understood as an implanted miniature telescope.[2]
The procedure was pioneered in Italy and has since been taken to the UK and USA. It should not be used in anyone with active (that is changing) macular degeneration.[3] It can be used in both "burned out" wet macular degeneration and in dry or atrophic macular degeneration. A telescopic simulator can be used to assess whether the surgery might be helpful, and to establish the best rotation for the two lenses.[4]
References
- ↑ "Archived copy". Archived from the original on March 12, 2012. https://web.archive.org/web/20120312151340/http://www.nice.org.uk/nicemedia/live/11921/40489/40489.pdf. Retrieved August 23, 2010.
- ↑ "Archived copy". Archived from the original on March 12, 2012. https://web.archive.org/web/20120312151422/http://www.nice.org.uk/nicemedia/live/11921/41746/41746.pdf. Retrieved August 23, 2010.
- ↑ "Iol-Vip Faq". Archived from the original on August 5, 2010. https://web.archive.org/web/20100805004527/http://kasaby.co.uk/IOLVIPQA.aspx. Retrieved August 23, 2010.
- ↑ "Sapphire Eye Care". Sapphire Eye Care. http://www.sapphire-eyecare.co.uk/IOL/understanding.htm. Retrieved 2016-06-30.
External links
- LensSpecial, the manufacturers of the IOLVIP lens (Italian)
- About macular degeneration (from BrendanMoriarty.com)
- IOLVIP procedure page (from BrendanMoriarty.com)
- File:IOLVIP.svg
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