(74 days)
BOSTON EO (enflufocon B) Contact Lens Material is indicated for daily wear for the correction of refractive ametropia (myopia, hyperopia, astigmatism and presbyopia) in aphakic and not-aphakic persons with nondiseased eyes. The lens may be disinfected using a chemical disinfecting system only.
The BOSTON EO Gas Permeable Contact Lens Material, enflufocon B, is composed of aliphatic fluoroitaconate siloxanyl methacrylate copolymer with an ultraviolet absorber (Uvinul D-49). The color additives conform with 21 CFR part 74.3206. The enflufocon B material has an oxygen permeability, DK, of 58, a specific gravity of 1.23, and the lens visible light transmittance of at least 70%. The enflufocon B name has been adopted by the United States Adopted Names Council (USAN).
1. Table of Acceptance Criteria and Reported Device Performance
| Acceptance Criteria | Test Lens (BOSTON EO) Performance | Control Lens (BOSTON ES) Performance |
|---|---|---|
| Safety: | ||
§ 886.5916 Rigid gas permeable contact lens.
(a)
Identification. A rigid gas permeable contact lens is a device intended to be worn directly against the cornea of the eye to correct vision conditions. The device is made of various materials, such as cellulose acetate butyrate, polyacrylate-silicone, or silicone elastomers, whose main polymer molecules generally do not absorb or attract 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.