As the natural lens plays a vital role in focusing light for clear vision, artificial-lens implantation at the time of cataract surgery is necessary to yield the best visual results. Because the implant is placed in or near the original position of the removed natural lens, vision can be restored, and peripheral vision, depth perception, and image size should not be affected. Medicontur offers today the latest generation of lens made from soft acrylic materials, hydrophilic or hydrophobic. These are easily foldable, safe and simple to implant through a small corneal incisions which do not require sutures.
Independent of its material characteristics a lens, which is selected in accordance with individual requirements and medical criteria, can achieve an additional potential improvement in sight. There are a variety of intraocular lens types available for implantation, including monofocal, toric, and multifocal intraocular lenses.
Will you join the “yellow” trend?
By age the natural crystalline lens becomes more and more yellow. As a result the lens is absorbing some of the blue light. Blue light is the most energetic part of the visible light spectrum (400 - 500 nanometers) and is said to have harmful effects on the macula in the eye. On the other hand, blue light is more important for scotopic (night time) than photopic (day time) vision. Scotopic sensitivity declines twice as fast with aging than photopic sensitivity. Therefore night vision is a major problem for older adults.
After the natural crystalline lens has been replaced by a conventional IOL (with a UV-light blocker only), the macula is no longer protected against blue light. In order to give some protection to the macula, and at the same time not to impair night vision, the ﬁltering of the blue light has to be balanced carefully. The Natural Yellow Filter presented by Medicontur protects the macula by blocking most of the blue light under 460 nanometers. At the same time it maintains scotopic vision by letting blue light pass over 460 nanometers.
Medicontur Natural Yellow Filter
- A balanced protection of the macula against UV-A and blue light by an absorption curve close to that of a middle-aged human crystalline lens.
- Optimized preservation of the natural color perception and contrast sensitivity.
“Natural Yellow Filter” - for ﬁltering as much as necessary, preserving as much as possible.
Quality of material and design:
- No glistenings
- Low chromatic aberration
- Cutting-edge manufacturing process
- Free of spherical aberration
- Preservation of depth of ﬁeld
- Natural Yellow Filter option
Looking for excellence? Ask for the ABBE number…
Before undergoing a cataract surgery, ask for the ABBE number of the IOL…
- The ABBE number expresses the level of dispersion caused by the IOL material. The higher the dispersion the higher the chromatic aberration.
- What is chromatic aberration? Chromatic aberration is the failure of a lens to focus all colors in one focal point. This occurs because each material has a different refractive index for each wavelength. The higher the refractive index of a material the higher the dispersion and the chromatic aberration.
- The lower the dispersion and the higher the optical performance of an IOL.
- Medicontur IOLs have the highest ABBE number amongs all IOLs on the market: hydrophilic 58, hydrophobic 57