📋 FDA Reference
Lifestyle 55 Methafilcon a Soft Hydrophilic Contact Lens
Permeable Technologies
Summary: The Lifestyle 55 Methafilcon A Soft Hydrophilic Contact Lens is a vision correction device used primarily by optometrists and ophthalmologists. It is designed for patients requiring vision correction through contact lenses.
FDA Clearance Information
Pathway ?
510(k)
Number ?
K945981 ↗
Decision Date ?
February 7, 1995
Product Code ?
LPL
Device Class ?
Class 2
Evidence ?
419 studies
This device was cleared through the FDA 510k pathway on February 7, 1995, by Permeable Technologies. It is classified as a Class 2 medical device under product code LPL.
What It Is
The Lifestyle 55 Methafilcon A Soft Hydrophilic Contact Lens is a soft contact lens made from methafilcon A, a material known for its hydrophilic properties, allowing for moisture retention and comfort. These lenses are designed to correct refractive errors such as myopia or hyperopia by altering the focal point of light entering the eye. Their soft nature makes them comfortable for extended wear.
FDA-Cleared Indications
- Correction of refractive errors with a soft hydrophilic contact lens.
- Vision correction for patients with nearsightedness or farsightedness, according to the prescribed lens power and labeling.
Clinical Applications
- Daily-wear vision correction for myopia.
- Daily-wear vision correction for hyperopia.
- Non-surgical correction of refractive errors as an alternative to eyeglasses.
Practical Considerations
- The lens must be properly fitted by an optometrist or ophthalmologist; available parameters, diameters and prescriptions depend on the product labeling.
- Use only the cleaning, disinfecting and storage solutions recommended by the eye-care professional or manufacturer. Do not use tap water or saliva to wet or store lenses.
- Follow the prescribed wearing and replacement schedule. Do not sleep in the lenses unless the specific labeling and eye-care professional permit it.
- Patients with active eye infection, significant ocular inflammation or other contraindications to contact-lens wear may need to avoid these lenses.
- MRI safety is generally not a concern for soft contact lenses because they do not contain metal, but lenses should be removed if the imaging center or eye-care professional instructs the patient to do so.
Linked Studies (20)
PubMed • 2025
Onyx Liquid Embolic Agent: Basic Knowledge for Its Use in Interventional Neuroradiology.
Journal of neuroendovascular therapy
RCT|prospective|retrospective|case Series|other View Source →PubMed • 2025
Performance evaluation of quantitative hemoglobin A2 and fetal hemoglobin testing using commercially lyophilized vs. in-house whole blood controls in Chinese clinical laboratories: a 12-year analysis of National External Quality Assessment Data.
Clinical chemistry and laboratory medicine
RCT|prospective|retrospective|case Series|other View Source →PubMed • 2025
Clinical progress note: Haemophilus influenzae type b.
Journal of hospital medicine
RCT|prospective|retrospective|case Series|other View Source →PubMed • 2025
Pilot study of social media promotion of home-based self-testing for syphilis.
Sexually transmitted diseases
RCT|prospective|retrospective|case Series|other View Source →PubMed • 2025
Clinical development and performance of the First to Know Syphilis Self-Test for over-the-counter usage: a de novo rapid test for treponemal antibody.
Journal of clinical microbiology
View Source →PubMed • 2025
Implementation of an Opt-Out and Rapid Point-of-Care Syphilis Testing Program for Pregnant Patients Presenting to the Emergency Department.
Sexually transmitted diseases
RCT|prospective|retrospective|case Series|other View Source →PubMed • 2025
Evaluation of Rapid Syphilis Testing Using the Syphilis Health Check in Florida, 2015-2016.
Florida public health review
View Source →PubMed • 2025
Multiplex droplet digital PCR for the detection and quantitation of Streptococcus pneumoniae, Mycoplasma pneumoniae, and Haemophilus influenzae.
Frontiers in cellular and infection microbiology
RCT|prospective|retrospective|case Series|other View Source →PubMed • 2025
Palm Multidiagnostic of Mycoplasma pneumoniae, Chlamydia pneumoniae, Haemophilus influenzae, and Streptococcus pneumoniae Using One-Tube CRISPR/Cas12a.
Transboundary and emerging diseases
View Source →PubMed • 2025
Tp40: a new potential prognostic and diagnostic marker for syphilis.
Microbiology spectrum
View Source →PubMed • 2025
Serotonin sets up neutrophil extracellular traps to promote neuroendocrine prostate cancer metastasis in the liver.
The Journal of clinical investigation
RCT|prospective|retrospective|case Series|other View Source →PubMed • 2025
Application value of Philips Ingenuity TF PET/CT scanner imaging agent FAP in evaluating renal fibrosis.
Hellenic journal of nuclear medicine
RCT|prospective|retrospective|case Series|other View Source →PubMed • 2025
Message from Dr. Philippe T. Georgel, Guest Editor for the Marshall University Collection, Brad D. Smith, President of Marshall University, and Dr. Anivandan Mukherjee, Provost of Marshall University.
Biochemistry and cell biology = Biochimie et biologie cellulaire
View Source →PubMed • 2025
Improved patient comfort and procedural efficiency using chlorhexidine-coated hydrophilic urethral catheters: a randomized controlled trial.
Journal of Yeungnam medical science
RCT View Source →PubMed • 2025
pTx-Pulseq in hybrid sequences: Accessible and advanced hybrid open-source MRI sequences on Philips scanners.
Magnetic resonance in medicine
RCT|prospective|retrospective|case Series|other View Source →PubMed • 2025
Comparative connectomics of Drosophila descending and ascending neurons.
Nature
RCT|prospective|retrospective|case Series|other View Source →PubMed • 2025
Hydrophilic-coated sheaths for reducing radial artery spasm during transradial procedures: A systematic review and meta-analysis.
Interventional neuroradiology : journal of peritherapeutic neuroradiology, surgical procedures and related neurosciences
View Source →PubMed • 2025
History of antineutrophil cytoplasmic autoantibodies : Milestones in rheumatology.
Zeitschrift fur Rheumatologie
View Source →PubMed • 2025
A Hydrophilic Polyurethane Foam Containing Nigella sativa Oil as a Wound Dressing.
BioMed research international
RCT|prospective|retrospective|case Series|other View Source →Frequently Asked Questions
What is Lifestyle 55 Methafilcon A Soft Hydrophilic Contact Lens used for?
It is used for correcting refractive errors such as myopia and hyperopia in patients.
What specialties typically use this device?
Optometrists and ophthalmologists typically use these lenses in their practice.
What are the FDA-cleared indications?
The lenses are indicated for vision correction in individuals with refractive errors like nearsightedness or farsightedness.
Disclaimer: This page compiles publicly available regulatory and published clinical evidence for educational reference.
It does not constitute medical advice, product endorsement, or a recommendation for clinical use.
Always consult manufacturer documentation and clinical judgment for patient care decisions.