(300 days)
Discon Plus (Etafilcon A) Contact Lens visibility tint with UV blocker is indicated for daily wear for the correction of refractive ametropia in not-aphakic persons with non-diseased eyes that are myopic or hyperopic and may exhibit refractive astigmatism up to 2.00 diopters that does not interfere with visual acuity.
Eye care practitioners may prescribe the lenses for either single-use daily disposable wear or frequent/planned replacement wear with cleaning, rinsing, disinfection and scheduled replacement as prescribed by the eyecare professional. When prescribed for frequent/planned replacement wear. The contact lens may be disinfected using chemical (not heat) disinfection system.
The Discon Plus (Etafilcon A) Contact Lens visibility tint with UV blocker is available as non-spherical fenses manufactured by spin-casting method. The model illuminated with high water content (58 %). `.te hydrogel lens' material is a random copolymer composed of 2-hydroxyethyl methacrylate (HEMA) Ind methacrylic acid (MAA), which was cross-linked with 1,1,1-trimethylolpropane trimethacrylate (TMPTMA) and Ethylene Glycol Dimethacrylate (EGDMA) via UV photo- polymerization. The Discon Plus (Etafilcon A) Contact Lens visibility tint with UV blocker is tinted blue using C.I Reactive blue 19 to make the lens more visible for handling In the Discon Plus Contact Lens with UV Blocker, a Benzophenone UV absorbing monomer is used to block UV radiation. The average transmittance characteristics for Discon Plus lens are less than 5% in the UVB range of 280nm - 315nm and less than 30% in the UVA range of 316nm - 380nm. Lenses are supplied sterile in sealed blister packers containing sterile isotonic phosphate buffered saline solution.
This document describes the Discon Plus (Etafilcon A) Contact Lens visibility tint with UV blocker. It is important to note that this 510(k) submission primarily relies on substantial equivalence to previously cleared predicate devices, rather than an independent de novo study with acceptance criteria being met by the device itself.
1. Table of Acceptance Criteria (Technological Characteristics) and Reported Device Performance
The acceptance criteria are implicitly defined by the properties of the predicate devices. The "reported device performance" refers to the characteristics of the Discon Plus lens, which are shown to be substantially equivalent to the predicates.
| Characteristic | Acceptance Criteria (Predicate: Discon (K051129) & Acuvue (K962804)) | Reported Device Performance (Discon Plus) |
|---|---|---|
| FDA group # | Group # 4 >50% Water, Ionic Polymers | Group # 4 >50% Water, Ionic Polymers |
| USAN name | Etafilcon A | Etafilcon A |
| Production method | Predicate 1 (Discon): Spin-casting | |
| Predicate 2 (Acuvue): Cast-molded | Spin-casting | |
| %Water content | 58 | 58 |
| Refractive index | 1.40 | 1.40 |
| Oxygen permeability (edged corrected) @ 35°C | Predicate 1 (Discon): $24 \times 10^{-11}$ | |
| Predicate 2 (Acuvue): $26 \times 10^{-11}$ | $24 \times 10^{-11}$ | |
| Power, Diopters | Predicate 1 (Discon): +6.0D~-12.0D | |
| Predicate 2 (Acuvue): +20.0D~-20.0D | +20.0D~-20.0D | |
| %Light transmission @381~700 nm | 93 minimum (for Discon) / 85 minimum (for Acuvue) | 93 minimum |
| %Light transmission @316~380 nm (UVA) | avg |
§ 886.5925 Soft (hydrophilic) contact lens.
(a)
Identification. A soft (hydrophilic) contact lens is a device intended to be worn directly against the cornea and adjacent limbal and scleral areas of the eye to correct vision conditions or act as a therapeutic bandage. The device is made of various polymer materials the main polymer molecules of which absorb or attract a certain volume (percentage) of water.(b)
Classification. (1) Class II if the device is intended for daily wear only.(2) Class III if the device is intended for extended wear.
(c)
Date PMA or notice of completion of a PDP is required. As of May 28, 1976, an approval under section 515 of the act is required before a device described in paragraph (b)(2) of this section may be commercially distributed. See § 886.3.