Age-related macular degeneration (AMD) is the leading cause of vision loss for people over the age of 50 in the Western world, affecting approximately 25-30 million people.
Types of AMD
AMD comes in two types - the "DRY" form and the more severe "WET" form.
Dry AMD, the more common and milder form of AMD, accounts for 85% to 90% of all cases. It develops gradually over time and usually causes only mild loss of vision. Although the wet form of AMD accounts for only 10 - 15% of all AMD, the risk of severe sight loss is much greater. Wet AMD is responsible for 90% of cases of severe vision loss associated with AMD.
Rehabilitation
Once available treatment options have been exhausted, patients are left with impaired vision. Currently there are no treatment options available that restore lost vision. For many AMD patients, the hardest challenge is adapting to life with impaired vision. However, by retraining existing peripheral vision, modifying the patient's environment and using available low vision devices and aids, AMD patients can continue to maintain their lifestyle and independence.
IOL-VIP
The IOL-VIP system is intended for patients suffering from Age Related Macular Degeneration and other macular diseases that are not amenable to treatments.
The IOL-VIP package is composed of an arrangement of two intraocular lenses inserted into the eye surgically to form a Galilean telescope thus obtaining a moderate magnification and a measured prismatic effect deflecting a magnified image onto healthier macular tissue. A Preferred Retinal Locus (PRL) is determined prior to surgery with the aid of a simulator and dedicated PRL detection software. Once the PRL has been determined, the lens implants are oriented into the eye such that the prismatic effect allows the magnified image to fall onto the PRL.
A personalised rehabilitation programme is started two weeks prior to surgery and continues for 6 weeks after, with the aim of maximising the patient’s ability to use the PRL.
This new mixed methodology, surgical and rehabilitative, is accomplished by dedicated software for a comprehensive rehabilitative project. Very good outcomes have been reported.
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