What is hydrophobic IOL?

The attachment of lens epithelial cells on IOL surface plays a part in piggyback IOL opacification. Acrysof IOL showed more lens epithelial cell attachment compared to Tecnis IOLs within an animal study .

Ten monofocal Eyecryl Plus ASHFY600 IOLs and ten monofocal AcrySof IQ SN60WF IOLs were tested because of their resistance to glistening formation. The Eyecryl Plus ASHFY600 IOL and AcrySof IQ SN60WF are both single-piece IOLs, made from a hydrophobic acrylic material . The reaction of lens epithelial cells and the capsule to IOL material and design is capsular biocompatibility. During cataract surgery the blood-aqueous barrier is disrupted and proteins and cells are released in the aqueous humor. Proteins then adsorb on the IOL surface which will influence subsequent cellular reactions on the IOL .

Journal Of Cataract & Refractive Surgery

Surgery was performed uneventfully through a clear corneal incision, and a dispersive ophthalmic viscosurgical device (4% sodium chondroitin sulfate, 3% sodium hyaluronate ) was used. Preoperatively, the corrected distance visual acuity was 20/80 in each eye. 1 day after surgery, the CDVA had improved to 20/40 in the right eye and 20/50 in the left eye.
SupraphobToric is the next generation Toric IOL, comprised of premium quality biocompatible Yellow Hydrophobic Acrylic material with the refractive index of 1 1.49. Mirado Hydrophobic was designed using advanced tools by our experienced R&D team of optical and mechanical engineers. Register your specific details and specific drugs of interest and we will match the information you provide to articles from our extensive database and email PDF copies to you promptly. “First, we measured the difference between your sharpness of an ideal rectangular edge and the sharpness or roundness of the various real lens edges using image analysis software on a micrometer scale,” he continues.

• Monocular visual acuities are shown 1 month postoperatively for eyes implanted with a POD F GF IOL or a POD F IOL.
• Of the, the plate haptics have a higher tendency to decenter in eyes with defective anterior capsule .
• “Manufacturers have discovered that it’s very important to truly have a relatively sharp, square edge to the posterior IOL optic, as well as getting the lens fit well in to the capsular bag,” notes Dr. Mamalis.
• Thus, the IOL production process and also the polymer are necessary elements in providing a lens with a resistance to material changes.

Right from couching and rendering the patient aphakic, science has come quite a distance to manufacturing intraocular lens. The various materials have their very own advantages and pitfalls due to their chemical structure and inherent properties. The crystalline lens absorbs ultraviolet radiation between 300 and 400 nm and protects the retina from photochemical damage . This protective phenomenon is lost once the lens is removed during cataract surgery, but it could be restored by the implanting a UV-absorbing polymethylmethacrylate IOL. Implantation of a UV absorbing IOL results in cyanopsia or blue tinted vision. Nonetheless it helps in preventing age related macular degeneration, improving contrast sensitivity and reducing glare in mesopic and photopic conditions.

Quality

The material also may affect the development of PCO by constraining the way the lens is manufactured, thereby possibly limiting the sharpness of a “square” edge. “Most hydrophilic lenses are lathe-cut or drilled in a dry state,” observes Dr. Tetz. “This lets you make very sharp edges. However the moment you put them in water, the material swells and increases in volume by 15 or 20 percent. The micro-edge gets rounder and smoother as it swells. The Eyecryl lens is manufactured by lathe-cutting the polymer which is different to the way Acrysof IOL is made, which is cast-moulding manufactured. Most likely the Eyecryl lens retains a far more homogenous copolymer distribution within the ultimate IOL whereas the cast-moulding procedure of the Acrysof lens might be rearranging the polymer distribution.

• In November, 1949, Dr. Harold Ridley implanted the initial intraocular lens after extracapsular cataract extraction in a 45 year old female at St. Thomas Hospital, London .
• The optic diameter and along the haptics are taken into account when the size of the IOL is usually to be measured.
• However, future long-term postmarket clinical follow-up studies and postmarket surveillance activities are necessary to verify these outcomes and to evaluate postoperative spectacle independence and patient satisfaction.
• Hydrophobic acrylic IOLs are

Fabricated by the State of the Art of the Technology machine with Froze-tumble polish. Uncomplicated Preloaded system of SupraPhob Lens is simple and enjoyable feel to implant the Hydrophobic Acrylic Lens safer. Anterior segment photographs showed a clear intraocular lens without optic opacification.

Dr. Tetz says the third paper in the series will discuss hydrophilic lenses . “Studying these edges is more difficult because you can’t use standard scanning electron microscopy, but we found a means around this problem,” he says.