Wednesday, July 23, 2008

Retinal Implants

Within the past few decades, procedures to replace and repair damaged or destroyed retinas have become more and more common, including several different options. Epiretinal Implants sit on top of the retina, directly stimulating ganglia using signals sent from the external camera and power sent from an external transmitter. Being as there are several different options it would only be expected for one to be recommended over another. That being said, I would recommend epiretinal implants, which sit on top of the retina, over subretinal implants, which sit under the retina.

While both types are showing promise in clinical trials I do find some faults with subretinal implants. For example, with some types of subretinal implant they are not able to have strong enough external power sources. Epiretinal implants sit on top of the retina and are therefore more easily accessible from power sources. However, since there are both still in the clinical trial stage it is possible that subretinal implants can be later seen as the more sensible choice.

 References: http://en.wikipedia.org/wiki/Retinal_implant

No comments: