VA-developed RainDrop Dispenser Aid aims to simplify use of single-use eye drops for patients with arthritis, tremors

The dispenser (pictured above) is made of one piece of plastic and features a hammer-shaped handle that releases a precise drop of fluid with a stabilizing bar resting on the patient’s cheekbone that ensures consistent positioning. Image credit: Rain Eye Drops

Rain Eye Drops LLC announced the launch of a newly refined first-of-its-kind RainDrop Dispenser Aid created specifically for single-use preservative-free dry eye drops. The device, which is patent pending, is licensed exclusively by the US Department of Veterans Affairs (VA) and the University of California.¹

According to the press release, the tool “is designed to help Americans with dry eye apply mono-dose eye drop vials more easily and accurately.” The dispenser aid is available free with any Rain purchase.¹

Julie Schallhorn, MD, a VA ophthalmologist in San Francisco and creator of the device, explained that the device is intended to aid veterans who struggle using single-use vials with fumbled applications, squeezing too hard, or wasting precious drops. She noticed these common problems among her patients while instilling eye drops. “It’s difficult to see patients who are suffering and are not served by the current options. This was a major motivation for me,” she commented.

According to the press release, the dispenser is made of 1 piece of plastic and features a hammer-shaped handle that releases a precise drop of fluid with a stabilizing bar resting on the patient’s cheekbone that ensures consistent positioning.

RainDrop Dispenser Aid Image credit: Rain Eye Drops

The development of the product was achieved through collaboration between bioengineers in the laboratory at the VA Technology Transfer Program (TTP) and researchers and clinicians.

John Kaplan, MD, director of the VA TTP, stated, “The ability to connect VA researchers and clinicians with top-notch biomedical engineers in the VA TTP Technology Transfer Assistance Project helps the VA innovators translate their dreams into real-world products that help veterans and the population at large.” The mission of the TTP is to improve veterans’ lives by making better health care products and services available to them, with benefits to the American public as well.

Mike Rain, CEO of Rain Eye Drops LLC, said, “RainDrop Dispenser Aid is a game changer for anyone who struggles with monodose eye drops, whether due to arthritis, tremors, or the everyday hassle of aiming those tiny vials.”

Other offerings

Rain Eye Drops has also developed its own preservative-free eye drop, Rain Renewal Eye Drops. The drops utilize CMS Eye Moisture technology that works to moisturize dry eyes and rejuvenate the irritated surface of the eye by reducing the evaporation of natural tears and irritation, which may be caused by environmental elements or digital eye strain. The company also states that the drops are gentle enough for sensitive eyes and combat moderate to severe dry eye.²

References

1. Rain Eye Drops launches first ever dispenser aid for single-use eye drops. News release. Rain Eye Drops. July 2025. Accessed July 23, 2025.
2. Why Rain Eye Drops is the #1 Artificial Tear Drop. Rain Eye Drops. Accessed July 23, 2025. https://tryrain.com/shop