I found Donna highly capable as an “out of the box” thinker as there were no prior designs to reference…

Our company is developing a medical device for which a complex optical prescription is required. I was made aware of POC, Donna Waters by Zemax Inc., a highly regarded Optical Design Software company. I met with Donna soon thereafter and after several hours of discussion, felt that Donna was the right optical engineer to undertake the challenging design of the optical elements for our retinal camera.

The various complicating factors which include meeting ISO standards and a myriad of eye models in the literature, none of which agree with one another were met with Donna’s high-level optical engineering expertise and positive attitude which, as the company’s engineering director, I appreciated very much.

During the design effort by Donna, there were various “moving target” specifications that complicated the design even further. Donna handled these as well and anyone who has had to deal with this, knows the difficulties involved.

Donna is an expert in applying Zemax software modeling to create the real-world optics that became the optical prescription. These included aspheric elements, numerous optical glass configurations as well as spherical and plano surfaces and image modeling to simulate the final design with a real image at the surface of a CMOS sensor. Donna used Monte Carlo tolerance modeling with MTF plots, image simulation and other Zemax modeling modalities to predict the properties of the image, not the least of which are high resolution required over a wide field of view.

I found Donna highly capable as an “out of the box” thinker as there were no prior designs to reference, the device being proprietary intellectual property.

When contracting engineering design services, there are many factors to weigh and I found that Donna excelled at the most sought after. Donna exudes a quiet confidence and is a brilliant optical engineer who is very easy to work with. Many folks who perform within the sphere of engineering consulting lead with their ego which can often create unnecessary drama, interfering with completing the task at hand. I’m happy to report that Donna worked with her competence doing the talking. I appreciate that.


Bill Collins

Director of Engineering, Ocutronics LLC