Device creates intraocular telescopic effect

Mar 15, 2010

An intraocular device is a new concept in the treatment of age-related macular degeneration that taps into telescopic mirror technology to redesign patients' vision, according to experts.

Key Points

Herzlia, Israel-An intraocular device (Lipshitz Macular Implant [LMI]) is a new concept in the treatment of age-related macular degeneration (AMD) that taps into telescopic mirror technology to redesign patients' vision, said its inventor, Isaac Lipshitz, MD, Herzlia, Israel.

The implant-an IOL with a magnifying telescope inside-increases the central visual field by a factor of 2.5 while preserving normal peripheral vision, a feat not possible with regular lenses, he explained.

"The 21st century will be an era of aging populations, and in addition to finding surgical solutions for presbyopia, treating AMD will become a significant challenge for ophthalmologists," Dr. Lipshitz said.

AMD could be a new frontier for cataract surgery with implants such as the intraocular mirror telescope, he added.

The device looks like a regular IOL but incorporates two miniature mirrors, which create an intraocular telescopic effect that magnifies only the central image. It is fully implanted in the bag, can be implanted in both eyes, preserves good retinal visibility for future treatments, and can be used for any type and any stage of AMD or other retinal diseases, according to Dr. Lipshitz.

The device does not decrease the total amount of light entering the eye since the pupillary opening is not disturbed, as it is in other IOLs fitted with a non-mirrored telescope.

With this device, the amount of light that enters the eye and is reflected onto the retina is controlled by the special coatings on the mirrors that collect the light and improve contrast.

The modified and enlarged image is projected on the central retina, creating an enlarged image over a wide area in order to improve central vision.

According to Dr. Lipshitz, the patient selection criteria for implantation of the lens are based on evaluating the potential visual improvement that could be reached with an external telescope.

As the implant can be done bilaterally, it is not necessary for patients to have similar visual acuity in both eyes or acuity below a certain standard.

Since the peripheral vision is preserved, the lens can be implanted in one eye regardless of the visual acuity of the other.