Intraocular Tapes - information
INTRAOCULAR TAPES *
OptoVet Company, Moscow, Russia
www.optovet.com perepechaev76@mail.ru
WHAT IS AN INTRAOCULAR TAPES:
Intraocular Tape (from English "tape" - strip, tape; and from
the term "taping" - to strengthen, fix, maintain with using special thin elastic bands).
It's elastic, a hydrophobic intraocular plate that has the shape and the size of a
standard intraocular lens, but unlike it, the optical part of the intraocular tape
is flat and has no diopter (optical power: 0 diopters). Simply put, an
intraocular tape – this is an intraocular lens with an optical power of 0 Diopters.
The term "Intraocular Taping" is implantation of an intraocular tape into a capsule bag after removal of the lens.
However, in contrast to intraocular lenses, intraocular tape is significantly lighter, stronger and more elastic in its characteristics; it is almost impossible to damage it even with rough and inept implantation. It is easy to fit into the cartridge, very easy to implant, elementary stabilizes inside the capsule bag, practically does not shift, and, due to its light weight, does not load the ligamentous apparatus of the lens bag, does not have inertia, does not shift during blows and injuries. The material of intraocular tape is completely similar to the material of conventional IOL: elastic hydrophobic polymer, absolutely inert, non-reactive, 100% transparent.
The Intraocular Tape is delivered in a "dry" package, fully retains its flexibility and elasticity in the air. It is implanted after cataract removal in a capsule bag through the cartridge-injector system, and can also be implanted using implantation tweezers.
WHY DO I NEED AN INTRAOCULAR TAPE:
There are certain categories of patients in whom Intraocular Tapе implantation, instead of standard IOL, has significant advantages:
1. Patients who develop cataracts on the background of irreversible retinal degeneration (for example, cataracts on the background of PRA-progressive retinal atrophy, in dogs and cats). In such cases, the destruction of the cataract eventually leads to the destruction and loss of the entire eyeball according to the scheme: progressive cataract-Mature cataract – overripe cataract - phacolytic uveitis – phacogenic glaucoma /l ens luxation – endophthalmitis – eye loss. Timely removal of cataracts in such animals preserves the eye and the remnants of visual functions, however, optical correction of such an eye is meaningless, since the retina practically does not work.
However, long-term practice of such operations has shown that when removing cataracts without implantation of IOL, over time, there is a shrinking and deformation of the empty capsule bag, which can lead to secondary deformation of the pupil and even deformation of the iris. In some patients, over time, the migration of cells of the iris pigment epithelium to the anterior capsule, and then into the empty capsule of the lens is noted. This migration of pigment cells increases the risk of secondary pigment tumors of the ocular vasculature.
2. Implantation of an Intraocular Tape ensures stable normal shape of the capsule bag; normal position of the iris and pupil shape; and also prevents secondary migration of iris pigment cells to the anterior capsule and into the capsule bag.
3. In severe cataracts, especially against the background of injuries to the eyeball or inflammation of the vascular membrane (chronic uveitis), it is not possible to determine the chance of restoring visual functions before surgery. Implantation of a standard IOL may present great technical difficulties, and it may not make sense if visual functions are not restored. Similar problems occur when removing cataracts in very elderly dogs and cats (older than 11-13 years), or in long-term blind animals (cataracts persist for more than 2-3 years), when the probability of restoring visual functions before surgery is impossible to determine, and the technical removal of cataracts is very difficult. It is in such cases that Intraocular Tape implantation has significant advantages: technically easy implantation, stabilization of the shape of the capsule bag, ensuring the normal size of the pupil, 100% optical transparency (while maintaining the transparency of the posterior capsule). If, after the operation, the retina of the animal will function normally, the eye with an implanted Intraocular Tape will provide quite sufficient visual functions for normal orientation.
4. Implantation of an Intraocular Tape is the first and very important stage of becoming a novice cataract surgeon. For a doctor who is just beginning to operate on cataracts, implantation of a standard intraocular lens can present significant difficulties. Implantation of an intraocular tape is much easier technically; during implantation, the intraocular tape is almost impossible to damage; visual results with proper implantation of an intraocular tape are quite good; the percentage of postoperative complications is significantly less than with standard IOL implantation.
It is important to remember that the owner of the operated animal always feels moral satisfaction when during the operation the doctor necessarily implants an "artificial lens", this is extremely important for most owners, in terms of their perception of quality treatment of cataracts in animals.
*Note: the development of methods for implantation of intraocular taping in animals; scientific and clinical tests of the developed models, determination of indications, contraindications, results and complications after operations were carried out by specialists of the Center for veterinary ophthalmology of Dr. Perepechaev, Moscow, Russia (www.9265231897.com www.cataract-dog.ru).
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