What is a sulcus IOL?
The IOL is positioned in the ciliary sulcus and the optic is captured posteriorly through the anterior and posterior capsule openings. This maintains IOL centration and prevents formation of Elschnig’s pearl and visual axis opacification posterior to the IOL.
What is the best monofocal IOL?
Monofocal Lenses Fifty-four percent of the surgeons say they use the Alcon IQ Aspheric IOL for most of their cases, while 31 percent prefer the J&J Vision Tecnis one-piece lens.
What holds an IOL in place?
IOLs usually consist of a small plastic lens with plastic side struts, called haptics, to hold the lens in place in the capsular bag inside the eye.
What is a 3 piece IOL?
Single-piece IOLs have soft and broader haptics which are made of the same material as the optic, usually hydrophobic or hydrophilic acrylic, whereas 3-piece IOLs have rigid haptics which are made of poly methyl methacrylate (PMMA). It was shown that these systems are one of the best methods to estimate IOL position.
What is piggyback IOL?
The piggyback technique with an Add-On IOL consists on the implantation of the primary IOL in the capsular bag and the secondary IOL in the ciliary sulcus. The main indications for secondary piggyback IOL implantation are: postoperative ametropia and pseudophakic presbyopia.
How is IOL power calculated?
The measured transit time is converted to a distance using the formula d=t/v Where d is the distance, t is the time and v is the velocity. Two types of A-scan ultrasound biometry are currently in use. The first is contact applanation biometry. This technique requires placing an ultrasound probe on the central cornea.
Which is better monofocal or multifocal?
Existing systematic reviews have generally concluded that multifocal IOLs result in better uncorrected near vision and greater spectacle independence, but more unwanted visual phenomena such as glare and halos, compared to monofocal IOLs.
Does cataract surgery give you 20 20 vision?
Some patients ask if they will have 20/20 vision after the procedure. Most patients can achieve 20/20 vision as long as they have no other conditions. Conditions that can affect the quality of vision after cataract surgery include: Glaucoma.
Which lens is better monofocal or multifocal?
Why are my eyes still blurry and sun sensitive after 2 months of cataract surgery?
Sometimes after surgery, blood vessels in the retina leak. As fluid collects in your eye, it blurs your vision. Your doctor will treat it with eye drops, and it could take weeks or months to heal. It usually gets completely better.
How is piggyback IOL calculated?
IOL Power calculation for piggyback IOLs is based on residual refractive error and can achieve highly accurate outcomes. For minus (myopic) refractions, multiply the spherical equivalent by 1.2 to determine the piggyback IOL power.
Can a 3 piece IOL be placed in the sulcus?
Because intraocular lenses available in the United States are not designed for sulcus placement, they’re often at risk of decentering without additional support. Above: a three-piece IOL in the sulcus, sunsetting following trauma to the eye. “Nevertheless, sulcus placement is more common than you might think,” he says.
Can a posterior IOL tear the anterior capsule?
The posterior capsule may also tear during the injection and implantation of a single-piece acrylic IOL. Particularly if there is no vitreous prolapse, the surgeon may be reluctant to rotate or exchange the IOL at this point.
What are the side effects of sulcus spa IOLs?
A thorough review of the literature was undertaken to analyze options for IOL placement. RESULTS: Complications of sulcus SPA IOLs included pigment dispersion, iris transillumination defects, dysphotopsia, elevated intraocular pressure, intraocular hemorrhage, and cystoid macular edema.
Which is better for sulcus lenses acrylic or silicone?
“In terms of material, I think silicone three-piece lenses do better in the sulcus than acrylic three-piece lenses, because acrylic lenses are more slippery, while the silicone is a little bit more adhesive,” says Dr. Grayson. “Whatever capsule is left will adhere better to the silicone, keeping the lens in a better position.
