July 8, 2010
Landers Vitrectomy Lens
Lander Vitrectomy lenses is a auto-adhering lens which is made up of a material which is made up of flexible material. This allows Landers Vitrectomy lenses to stick or fix it to the corneal or scleral regions of the eyes. This adhering to these regions of the eyes is due to only one factor that is the capillary grip phenomenon. So the procedure of holding the lens to the eyes can be avoided very easily. This is not all the Landers Vitrectomy lenses are also disposable in nature been cheap in price. So for every new patient a new lens can be provided this is a specialty of these lenses. So it makes sure the use of good optics for the patients.
Description of the Landers Vitrectomy lenses:
Landers Vitrectomy lenses include central part which is optically shaped and sized for the observing the interior regions of the eyes which is normally not viewable due to the optical properties of eyes which is natural. So the shape and size of this lens is made in such a way that it will counteract the effect of optical properties of eyes.
The central part of the lens, which is mentioned earlier, has concave surface on the inner side. The radius of curvature of this lens is R1. This radius is meant especially for contact with the corneal region of the eyes. The outer lip of this lens is an integrated or inseparable part of this central lens always projects out in radial orientation with respect to the central lens. The structure of the outer lip is a concave surface which normally extents upto the central part of the lens respectively. The radius of this outer lip is known as R2 and it is always greater than the radius of the central potion that is R2 is always greater than R1 whatever the dimensions may be. The reason for this arrangement is that outer lip is meant to contact scleral portion of the eyes. The outer lip is shaped for the purpose of deflection relative to the portion of central lens. One disadvantage of the Vitrectomy lenses is that they can br damaged while cleaning but this disadvantage is overcome by the disposable nature and cheap price of this lens.
The main use of this lens is to allow doctors to view mainly the posterior portion of the eyes while operating.
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