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AcrySof® ReSTOR® Apodized Diffractive Aspheric (IOL)

AcrySof® ReSTOR® Apodized Diffractive Aspheric  (IOL)
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AcrySof® ReSTOR® Apodized Diffractive Aspheric (IOL)

Product catalog summary
Product Overview
Alcon Laboratories, Inc. offers the AcrySof® Natural IOL, a sterile UV-absorbing acrylic foldable multipiece posterior chamber lens for visual correction of aphakia in adults post-cataract surgery. These lenses filter UV and blue light, simulating the natural crystalline lens.
Specifications
The lenses are crafted from high refractive index soft acrylic material, designed to fold for insertion and unfold post-implantation. The MN60MA model has a 6.0 mm optic diameter and a 13.0 mm overall length with a 5º haptic angle.
Mode of Action
These lenses are placed in the posterior chamber to replace the natural lens and correct aphakia. Their effectiveness in reducing retinal disorders is not established.
Indications and Cautions
Indicated for lens replacement post-cataract surgery, these lenses require careful anatomical consideration. Conditions like choroidal hemorrhage, severe eye disease, and glaucoma may contraindicate use.
Warnings
Potential surgical complications include corneal damage, infection, and retinal detachment. Long-term effects are unknown, and pre-existing conditions may affect visual outcomes. Posterior chamber lenses should not be placed in the anterior chamber.
Precautions
Do not resterilize lenses or store them above 45°C. Use only sterile solutions for rinsing, and handle lenses carefully to avoid damage.
Lens Power Calculation
Lens power should be calculated based on the surgeon's experience and intended placement, with references provided for calculation methods.
Directions for Use
Verify lens information before use, handle lenses by the haptic portion, and use sterile solutions for rinsing. Ensure appropriate instrumentation is available for surgery.
Patient Registration and Reporting
Patients must be registered with Alcon post-implantation for long-term follow-up. Adverse events should be reported to Alcon Laboratories.
Clinical Studies
Clinical studies confirm the safety and effectiveness of AcrySof® lenses, with a significant portion of the study population being Caucasian females.
Introduction
The document provides a detailed analysis of the AcrySof® Natural Single-Piece Lens Model SB30AL, comparing it with the control Model SA30AL. It includes data on visual acuity, adverse events, color perception, and Nd:YAG rates, along with clinical study results.
Patient Demographics
The study population for Model SB30AL is predominantly Caucasian (96.6%), with a mean age of 72.9 years. The control group (SA30AL) has a similar demographic profile with a mean age of 71.9 years.
Visual Acuity
Visual acuity was assessed at one year postoperatively. In the best-case scenario, 79.8% of SB30AL patients achieved 20/20 or better, compared to 80.4% in the control group. Overall, there was no statistically significant difference in visual acuity between the two models.
Adverse Events
Cumulative and persistent adverse events were recorded over a minimum of one year. No significant differences were found between the two models. Common adverse events included macular edema and lens dislocation, with low incidence rates.
Color Perception
Color perception was tested using the Farnsworth D-15 Panel Test. 98.2% of SB30AL patients passed the test, compared to 95.1% of SA30AL patients, indicating no significant impact on color vision.
Nd:YAG Rates
With a mean follow-up of approximately 21 months, 2.2% of SB30AL patients required Nd:YAG posterior capsulotomy, compared to 1.6% in the control group.
Clinical Studies
Clinical studies began in December 1990, focusing on the AcrySof® IOL Model MA60BM. The studies confirmed the safety and efficacy of the lens for visual correction of aphakia. The patient population was 61.1% female and predominantly Caucasian.
Complications and Adverse Reactions
Complications such as hyphema, macular edema, and retinal detachment were monitored. The majority of complications were associated with cataract extraction and occurred early postoperatively. Adverse reactions were reported at low rates, with secondary surgical interventions being the most common.
Supplemental Data
A study comparing AcrySof® lenses with PMMA and silicone lenses showed no significant differences in visual acuity and contrast sensitivity. However, AcrySof® lenses demonstrated a reduction in lens epithelial cells, which are linked to posterior capsule opacification.
Conclusion
The AcrySof® Natural Single-Piece Lens Model SB30AL is comparable to the control Model SA30AL in terms of visual acuity and adverse events, with no significant impact on color perception. The lens is effective for visual correction, with a low incidence of complications and adverse reactions.
Specifications and Materials
The document compares intraocular lenses (IOLs) made from different materials: Silicone, PMMA (Polymethylmethacrylate), and AcrySof®. It provides median values and ranges for various parameters, indicating the performance and characteristics of these materials.
Statistical Analysis
The study highlights a statistically significant difference in Nd:YAG capsulotomy rates between AcrySof® IOL and PMMA lenses (p=0.02), but not between AcrySof® IOL and silicone lenses (p=0.23) at three years postoperative. This suggests AcrySof® lenses may have advantages in reducing posterior capsule opacification.
Product Supply and Handling
The lenses are supplied dry and sterilized with ethylene oxide. They must be opened under aseptic conditions. The expiration date is clearly marked, and lenses should be returned if held past this date.
Returned Goods Policy
In the U.S., returned lenses are exchanged for other products, not credited. Returns require a Returned Goods Number and must be traceable. Policies may vary outside the U.S.
Labeling Symbols
The document lists symbols used on labeling, such as 'Do not reuse', 'Sterilized by ethylene oxide', and 'See instructions for use'.
References
The document cites various studies and patents related to IOLs, providing a basis for the data and conclusions presented.
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Catalog excerpts

AcrySof® ReSTOR® Apodized Diffractive Aspheric  (IOL)-1

40-500-050-002 PRODUCT INFORMATION Alcon Laboratories, Inc.

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AcrySof® ReSTOR® Apodized Diffractive Aspheric  (IOL)-2

PRODUCT INFORMATION Alcon Laboratories, Inc. STERILE UV-Absorbing Acrylic Foldable Multipiece Posterior Chamber Lenses CAUTION: Federal (USA) law restricts this device to sale by or on the order of a physician. Model Characteristics Chart Model Optic Type Haptic Angle DESCRIPTION AcrySof® Natural UV and blue light filtering acrylic foldable multipiece posterior chamber lenses are optical implants for the replacement of the human crystalline lens in the visual correction of aphakia in adult patients following cataract surgery. AcrySof® Natural IOL with Alcon’s proprietary blue light filtering...

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AcrySof® ReSTOR® Apodized Diffractive Aspheric  (IOL)-3

Figure 2 SPECTRAL TRANSMITTANCE CURVES (PERCENTAGE OF ULTRAVIOLET TRANSMITTANCE) 4 yr - 53 yr old range, crystalline lens WAVELENGTH (nm) NOTES: • The cutoff wavelength and the spectral transmittance curves presented here represent the range of transmittance values of IOLs made from acrylate/methacrylate copolymer with bonded UV-absorber and Alcon’s proprietary blue light filtering chromophore. • Measurements were direct transmittance using a 6 mm aperture and a disc of thickness equivalent to the optic center. • Human lens data from Boettner and Wolter (1962). Table 1 Transmission Comparison...

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AcrySof® ReSTOR® Apodized Diffractive Aspheric  (IOL)-4

Zonular separation (preventing fixation of IOL) Color vision deficiencies Glaucoma Chronic uveitis Diabetic retinopathy Clinically significant macular/RPE changes Studies have shown that color vision discrimination is not adversely affected in individuals with the AcrySof® Natural IOL and normal color vision. The effect on vision of the AcrySof® Natural IOL in subjects with hereditary color vision defects and acquired color vision defects secondary to ocular disease (e.g., glaucoma, diabetic retinopathy, chronic uveitis, and other retinal or optic nerve diseases) has not been studied. WARNINGS...

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AcrySof® ReSTOR® Apodized Diffractive Aspheric  (IOL)-5

SUGGESTED A-CONSTANT The constant listed on the outer label is presented as a guideline and is a starting point for implant power calculations. It is recommended that you develop your own constant appropriate for you based on clinical experience with the particular lens models, surgical techniques, measuring equipment, and postoperative results. In the United States, if additional information on lens power calculation is needed, please contact Alcon Laboratories, Inc. at 1-800-TO-ALCON (1-800-862-5266). Outside the United States, contact local Alcon offices or distributors. DIRECTIONS FOR USE...

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AcrySof® ReSTOR® Apodized Diffractive Aspheric  (IOL)-6

Table 2a Best Corrected Visual Acuity in the Best Case Patient Population at a Minimum of One Year Postoperatively, AcrySof® Natural IOL SB30AL #Per Table 2b Best Corrected Visual Acuity in the Best Case Patient Population at a Minimum of One Year Postoperatively, AcrySof® IOL SA30AL control #Per Table 3a Best Corrected Visual Acuity in the Overall Patient Population at a Minimum of One Year Postoperatively, AcrySof® Natural IOL SB30AL #Per Table 3b Best Corrected Visual Acuity in the Overall Patient Population at a Minimum of One Year Postoperatively, AcrySof® IOL SA30AL control #Per AcrySof®...

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AcrySof® ReSTOR® Apodized Diffractive Aspheric  (IOL)-7

Table 4 Cumulative Adverse Events at a Minimum of One Year Postoperatively AcrySof® Natural IOL SB30AL and SA30AL control SB30AL (N= 153) N % Hypopyon Intraocular Infection / Endophthalmitis Macular Edema Pupillary Block Retinal Detachment or Retinal Detachment Repair Lens Dislocation Secondary Surgical Reintervention Removal of Residual Cortex Explant (dislocation due to capsular rupture) Cryotherapy to Repair Retinal Tear Paracentesis to Lower IOP Focal Laser Treatment Photodynamic Therapy Explant Due to Biometry Error Hyphema *p-values from Fisher’s Exact Test comparing Model SB30AL to Model...

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AcrySof® ReSTOR® Apodized Diffractive Aspheric  (IOL)-8

PATIENT POPULATION The patient population in the clinical studies consisted of 61.1% females and 38.9% males. Stratifying by race, 94.5% were Caucasian, 3.2% were Black, and 2.1% were Other. The mean age for the total population was 66 years. VISUAL ACUITY The following is a summary of visual acuity achieved at one year and three years (Tables 6 and 6A) postoperatively by subjects who did not have preoperative ocular pathology, abnormal corneas, or postoperative macular degeneration (Best Case) and visual acuity achieved by overall subject population and by method of cataract extraction as shown...

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AcrySof® ReSTOR® Apodized Diffractive Aspheric  (IOL)-9

THREE YEAR DATA Table 8 Visual Acuity By Extraction Method at Three Years Planned Extracapsular Cataract Extraction Age <60 60-69 70-79 >79 Overall ECCE Table 8A Visual Acuity By Extraction Method at Three Years Phacoemulsification Cataract Extraction Age <60 60-69 70-79 >79 Overall Phaco Total Three Year Visual Acuity Data N = 508 COMPLICATIONS The United States Food and Drug Administration has identified eleven (11) potentially sight-threatening complications which may occur following cataract extraction and/or intraocular lens implantation. The cumulative and persistent (present at the one...

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AcrySof® ReSTOR® Apodized Diffractive Aspheric  (IOL)-10

Table 10 Cumulative Postoperative Complications at Three Years ECCE N = 24 N NA NA 1 3 0 NA 0 NA 0 0 0 Corneal Edema Iritis Hyphema Macular Edema Pupillary Block Secondary Glaucoma Cyclitic Membrane Vitritis Endophthalmitis Retinal Detachment Lens Dislocation Corneal Edema Iritis Hyphema Macular Edema Pupillary Block Secondary Glaucoma Cyclitic Membrane Vitritis Endophthalmitis Retinal Detachment Lens Dislocation Fifty-four (4.4%) patients receiving the AcrySof® IOL Model MA60BM posterior chamber lens experienced one or more of the complications listed in the previous tables. However, the majority...

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AcrySof® ReSTOR® Apodized Diffractive Aspheric  (IOL)-11

Hypopyon Intraocular Infection Acute Corneal Decompensation Secondary Surgical Intervention: a) Lens Replacement/ Removal b) Retinal Detachment Repair c) Repositioning of Lens d) Vitrectomy e) Iridectomy f) Wound Repair Leak g) Photocoagulation h) Removal of Residual Cortex Material i) Anterior Capsulotomy SUPPLEMENTAL PUBLISHED DATA A prospective, well-controlled and randomized study (Ursell et al, 1998; Hollick et al. #1. 1998) with AcrySof® lenses utilizing a uniquely-developed coaxial illumination method linked to a novel computerized digital imaging system (Pande et al, 1998) was conducted...

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*Prices are pre-tax. They exclude delivery charges and customs duties and do not include additional charges for installation or activation options. Prices are indicative only and may vary by country, with changes to the cost of raw materials and exchange rates.