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Clinical Trials & Research


ReVision Optics Raindrop Free Study is NOW CLOSED.

Is your near vision not quite what it used to be? Does it feel like your arms just aren’t long enough to read a menu or see the numbers on your cell phone? Are you finding yourself more and more dependent on those awkward reading glasses? Well, if you’re frustrated by the loss of near vision, please listen closely. Right now, doctors at Key-Whitman are studying an investigational, outpatient procedure designed to improve your near vision. The procedure takes about 15 minutes, and may help reduce or eliminate the need for reading glasses. If you qualify and choose to join the study, you will receive the procedure and all study-related care at no cost.

The ReVision Optics Raindrop free study is NOW CLOSED. 

Please choose from the following to learn more.

What is Presbyopia?
What is the Raindrop™ Corneal Inlay?
The Raindrop™ Procedure
ReVision Optics Raindropâ„¢

What is Presbyopia?

ReVision Optics PresbyLens®
Download our brochure with information about the ReVision Optics PresbyLens® Free Study

If you need reading glasses, it may be because you have presbyopia – a naturally occurring loss of near vision that affects millions of people everyday. Like grey hair and wrinkles, presbyopia is considered a normal part of the aging process. The first symptoms usually occur between the ages of 40 – 50. However, the ability to focus on near objects declines throughout life, and generally levels off near the age of 60. Presbyopia is believed to be caused by the gradual loss of elasticity, or flexibility, of the eye’s natural lens. As the lens loses its flexibility over time, the eye has a harder time focusing up close.

The onset of presbyopia is noticeable when you need to hold books, menus, and other fine print items at arm’s length in order to read them. As a result, people with presbyopia depend on reading glasses, contac


What is the Raindrop™ Corneal Inlay?

Doctors are now evaluating a 15-minute outpatient procedure designed to improve near vision and reduce or eliminate the need for reading glasses. The procedure uses the Raindrop™ corneal inlay, and is currently being offered as part of a new clinical study.

The Raindrop™ is a clear circular implant – like a tiny contact lens – that is implanted just beneath the surface of the eye. It is 2 millimeters in diameter (the size of a pinhead) and less than half the thickness of a human hair. The lens is designed so that it cannot be seen or felt once in place. The Raindrop™ is made of a water-based material called a hydrogel, commonly used in soft contact lenses. The lens works by gently reshaping the curvature of the cornea (the clear front part of the eye) so that it can more strongly focus light entering the eye. The Raindrop™ is placed only in one eye, the non-dominant eye, leaving your other eye untouched. Once in place, the Raindrop™ is designed to improve near vision when focusing up close.


The Raindrop™ Procedure

The Raindrop™ is implanted just beneath the surface of the eye during an outpatient procedure. Similar to the common LASIK procedure, a specialized laser is used to create a thin, circular flap in the cornea. The flap is lifted and the Raindrop™ is laid in place and allowed to adhere. Once the lens adheres, the flap is closed and the surgery is complete. The Raindrop™ procedure is typically performed in less than 15 minutes, with most patients returning to their normal activities the day after their procedure.

Intended Benefits of the Raindrop™ Corneal Inlay

  • 15-minute, outpatient procedure
  • Designed to reduce or eliminate the need for reading glasses
  • May be removed or adjusted if needed


CAUTION: Investigational device. Limited by Federal (or United States) Law to investigational use only.
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