[Triple-optic approach to the Artificial Accommodation System].
BACKGROUND
Use of an implantable mechatronic microsystem (artificial accommodation system) is a novel approach to restoration of the accommodative capacity of the human eye. One such system, based on the triple-optic approach, has been selected for investigation of its suitability.


METHODS
Optical modelling of the dioptric apparatus is carried out by means of an optical simulation tool. Postoperative refractive compensation plus at least 3 dpt of accommodation are required.


RESULTS
An axial shift of 300 microm or less is achieved for the entire range of biometric data ascertained before surgery. In addition, the defined requirements made of optical imaging quality are met.


CONCLUSIONS
The triple-optic approach is basically suitable for application in the restoration of accommodative capacity. It seems that flexure hinges could be used in association with conducting polymers as actuator material. One question that is still open concerns the deformability of such implants as this relates to minimally invasive corneal incisions.
Bergemann
M
M
Institut für Angewandte Informatik (IAI), Forschungszentrum Karlsruhe GmbH, Eggenstein-Leopoldshafen, Deutschland. mark.bergemann@iai.fzk.de
Sieber
I
I
Bretthauer
G
G
Guthoff
R F
RF
D017076:Computer-Aided Design; D004582:Electronics, Medical; D007910:Lenses, Intraocular; D008904:Miniaturization; D055095:Optics and Photonics / Q000295:instrumentation*; D011474:Prosthesis Design; D012030:Refractive Errors / Q000534:rehabilitation*; D012815:Signal Processing, Computer-Assisted / Q000295:instrumentation*; D013813:Therapy, Computer-Assisted / Q000295:instrumentation* / Q000379:methods