# K043540: Horizon 59 Oasis (Hioxifilcon a) Daily Wear Contact Lenses

- Pathway: 510(k) (Traditional)
- Applicant: Westcon Contact Lens Co., Inc.
- Decided: Feb 1, 2005 after 41 days
- Product code: LPL (Lenses, Soft Contact, Daily Wear)
- Device class: 2
- Regulation: 21 CFR 886.5925
- Recalls of this device: none
- Data: FDA decisions to Oct 25, 2026; recalls to Oct 12, 2026

## Lineage
Longest line of descent: 3 generations back to K954524 (1996). 4 ancestors in all.
4 later devices descend from it; 2 cite it directly.
0 of 9 devices in its family (counting itself) have a Class I recall.

## Predicates on the family tree (from the FDA summary)
- K031774: Horizon (Methafilcon a) Daily Wear Sphere and Toric Contact Lenses, Westcon Contact Lens Co., Inc. (2004) Summary page 2.

## Most influential descendants
- K070308: Flexlens Multifocal Soft Contact Lens, (Hioxifilcon a) and (Hioxifilcon B) for Daily Wear (2007), 2 descendants of its own
- K100443: Definitive, Flexlens - Silicone Hydrogel (2010), 1 descendant of its own
- K242059: Flexlens Silicone Hydrogel Daily Wear Soft (Hydrophilic) Contact Lens (efrofilcon A) (2024), 0 descendants of its own
- K080686: Westcon Horizon 49% (Hioxifilcon B) (2008), 0 descendants of its own

## Indications for use
Horizon 59 Oasis (hioxifilcon A) Spherical, Horizon 59 Oasis (hioxifilcon A) Toric, Horizon 59 Oasis (hioxifilcon A) Bi-con, Horizon 59 Oasis (hioxifilcon A) Bi-con Torie, Horizon 59 Oasis (hioxifilcon A) Progressive, Horizon 59 Oasis (hioxifilcon A) Progressive Torie are indicated for daily wear for the correction of refractive ametropia (myopia, hyperopic, astigmatism and presbyopia) in aphakic or not-aphakic persons with nondiseased eyes. The color-enhanced version is indicated for daily wear to enhance or alter the apparent eye color. The lenses may be disinfected using chemical systems only.

Source page: https://510kreport.com/device/K043540
Methodology: https://510kreport.com/methodology