Thank you, Lisa, and thank all for joining our call this afternoon. This afternoon, we announced that Second Sight would accelerate development of the Orion platform. On this call, I'd like to share our rationale and our plans going forward. Our ultimate goal is to deliver a useful artificial vision to virtually all blind individuals. And we now believe, Orion offers the best and fastest path to do so. The strategy increases the organizational focus on Orion, which should ultimately lead to treating more people sooner while creating substantial value for shareholders. There are several reasons we believe now is the right time to accelerate our path forward for Orion. First, as we continue to evaluate the data from our Orion early feasibility study, we are increasingly encouraged of what we have observed and the progress our subjects have made. We presented results at the 5th Annual BRAIN Initiative Investigators Meeting in Washington, D.C. on April 11, in which 5 out of 5 subjects were rated by certified orientation and mobility specialists as having received positive or mild positive benefit from Orion in terms of functional vision and well-being 6 months post-implant. We're very encouraged by these results and view this as a testament to the potential impact Orion can have on the lives of blind individuals as they demonstrate the ability to perform daily task they previously could not without the Orion system. Observations from rehabilitation sessions include that subjects were able to use Orion to visually detect parked cars, identify the direction of motion of a person walking by, short light from dark laundry and visually order small objects by size. Recently, one subject reported walking around the block in their neighborhood alone without anyone's assistance for the first time since becoming blind. The 6th subject who was implanted in January at Baylor is progressing nicely and was just cleared for home use. We expect additional Orion feasibility study data to be presented later this year at various scientific forms such as the meeting of the World Society for Stereotactic and Functional Neurosurgery on June 25 in New York City. Second, as outlined in past calls, we believe Orion holds the potential to help individual's blind from almost all forms of blindness. Orion bypasses the eye and the optic nerve allowing us to directly stimulate the visual cortex and provide useful artificial vision to those blind for most causes including glaucoma, eye injury, diabetic retinopathy, optic nerve disease or injury and RP. Our market research indicates that over 500,000 people in the U.S. alone are legally blind from these causes with a far greater number of blind individuals from the same causes outside the U.S. We are now convinced that the better and faster way to treat all blindness, including RP population that is now addressed by Argus II is to more quickly transition to the Orion platform. Finally, we believe Orion is the more attractive platform for continued investment and technological improvement that will extend our leadership position in artificial vision. As a result, to support the development and expansion of our Orion programs, we are in the process of adding key capabilities to the organization. This includes filling more than 25 positions with top talent that will enable us to move current programs forward, while also supporting next-generation technologies, such as stimulation strategy advances, much higher electrode count devices, new cortical array designs and a bilateral cortical implants. We believe that outcome of these advances could include more useful vision, higher acuity vision and a greater field of view as well as the ability to help an increasing percentage of the millions of legally blind individuals around the world. In addition, our patent portfolio consists of an estimated 85 U.S. patents applicable to Orion or cortical simulation that protect our continued investment in this exciting technology. On the regulatory front, we remain encouraged by our discussions with the FDA regarding Orion and expect to have additional meetings with the agency in the coming months. As we reach agreement with the FDA on key aspects of the regulatory strategy, we will share more details with investors. I'm also pleased by recent developments with CMS regarding reimbursement for breakthrough devices such as Orion. CMS recently released a proposed rule that would waive the requirement on substantial clinical improvement evidence for FDA-designated breakthrough medical devices for 2 years and automatically qualify them for a new technology add-on payments. This means that breakthrough devices would automatically get new tech add-on payments upon regulatory approval. I expect that we will initiate formal discussions with CMS during the second half of 2019 concerning the path for Orion reimbursement and explore opportunities to coordinate the gathering of clinical data to meet regulatory and reimbursement approval requirements. To support our transition to Orion, we are evaluating our supply chain manufacturing capabilities and quality assurance processes to identify areas for improvements. Upgrades will certainly be required as we continue to wrap up manufacturing of Orion devices to support additional clinical work and future sales volumes that we believe could be orders of magnitude greater than Argus II. Accordingly, we intend to suspend Argus II production in the near future. We have a sizable inventory of Argus II devices and plan to continue performing new implants for the foreseeable future. We anticipate that some potential RP patients may choose to wait for the newer Orion platform. It is also possible that depending upon the speed of clinical enrollment, regulatory approval, reimbursement approval and other factors, there could be a gap in treating RP patients with Orion. Please note, that at some point, we may decide to suspend new Argus II implants due to business considerations even if inventory is still available. On the commercial front, we intend to further reduce and eliminate overtime our commercial spend dedicated to driving new Argus II implants, both in the U.S. as well as outside the U.S. I want to be very clear about one thing. Second Sight is committed to supporting our existing Argus II users throughout the world. This means that we will maintain capabilities in our organization to support Argus II users, including field personnel to troubleshoot issues as well as inventories of replacement or warranty parts. We also intend to keep most of our artificial vision rehab team intact, as they play a key role training Orion's subjects to get the most from their system. As a demonstration of our commitment to Argus users, we will continue with our plans to submit Argus IIs for regulatory approval. Upon approval, these next-generation externals would then be made available on a limited basis to existing and potentially new Argus users at some implanting centers as regulatory constraints inventory and other factors allow. Our commitment to the field of artificial vision is further demonstrated by our continued investment in multiple research projects designed to enhance the artificial vision user experience. We've talked about these before. They include, the integration of object and facial recognition, thermal imaging, distance filtering and eye tracking technologies. Our plan is to have multiple prototype systems ready for human testing later this year. It's quite easy to get excited about a future that includes high electrode count cortical devices with capabilities integrated into the system such as object or facial recognition and thermal imaging. In closing, the acceleration of our Orion efforts is a calculated move to extend our leadership position in artificial vision. The Argus II experience has been invaluable and paving the way for success with Orion. Our ability to design and build miniature, high-channel count neuromodulation devices that last for years in the human body is unmatched. We will also leverage our extensive learning and success in the critical areas of patient outreach, customized patient programming and individualized artificial vision rehabilitation. In short, now is the right time to fully commit our resources to ensure in Orion's success. The data continues to be encouraging, our discussions with the FDA are promising. The market opportunity is huge. And the technology offers an exciting platform for future advances. With that, John will now review our first quarter 2019 financial results. John?