Walter Doll

Title: Walter Doll: Innovator in Ophthalmic Device Technology

Introduction

Walter Doll is a prominent inventor based in Bern, Switzerland. He has made significant contributions to the field of ophthalmic devices, holding a total of 3 patents. His work focuses on creating advanced technologies that enhance the functionality and safety of implantable ophthalmic devices.

Latest Patents

One of Walter Doll's latest patents is for hermetically sealed implantable ophthalmic devices and methods of making them. This innovation addresses the issue of electronic components leaking harmful substances into the eye and surrounding tissue. The devices feature electronic components that are hermetically sealed within cavities formed by bonding together two or more glass wafers. The bonding techniques, such as laser fusion bonding, pressure bonding, or anodic bonding, create a seal that leaks at a rate of less than about 5×10 Pa ms when subjected to a helium leak test. Additionally, hermetically sealed feedthroughs made of conductive material provide electrical connections to components inside the sealed cavities.

Another notable patent involves ophthalmic devices with application-specific integrated circuits (ASICs). These devices utilize dynamic electro-active elements to offer variable optical power and/or depth of field, which can restore lost accommodation in individuals suffering from presbyopia or aphakia. The device includes two ASICs: a high-voltage ASIC that steps up a low voltage from a power supply and another low-voltage ASIC that controls the operating state of the high-voltage ASIC. This design minimizes power dissipation compared to other ophthalmic devices.

Career Highlights

Walter Doll is currently employed at Elenza, Inc., where he continues to innovate in the field of ophthalmic technology. His work has significantly advanced the development of safer and more effective implantable devices.

Collaborations

Walter has collaborated with notable colleagues such as Jean-Noel Fehr and Urban Schnell, contributing to the advancement of ophthalmic device technology.

Conclusion

Walter Doll's contributions to the field of ophthalmic devices demonstrate his commitment to innovation and safety in medical technology. His patents reflect a deep understanding of the challenges faced in this area and provide solutions that enhance patient care.