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frequency 55 methafilcon a hydrophilic contact lens
Aspect Vision Care
Summary: The frequency 55 methafilcon a hydrophilic contact lens is designed for vision correction. It is FDA-cleared and supported by studies examining ocular surface health and lens performance.
FDA Clearance Information
Pathway
510K
Number
K971164 ↗
Decision Date
May 21, 1997
Product Code
LPL
Device Class
Class 2
Evidence
419 studies
The frequency 55 methafilcon a contact lens was cleared by the FDA through the 510(k) pathway on May 21, 1997. It is manufactured by Aspect Vision Care and classified as a Class 2 medical device.
What It Is
The frequency 55 methafilcon a is a hydrophilic contact lens intended for vision correction. It is designed to maintain ocular surface health and provide comfort during wear.
Clinical Applications
This contact lens is commonly used for correcting refractive errors such as myopia and hyperopia. It is suitable for patients seeking daily wear lenses with hydrophilic properties.
Evidence Summary
Two studies provide evidence on the frequency 55 methafilcon a lens. The studies, conducted between 2019 and 2023, include a clinical comparison of lens diameters and an evaluation of ocular surface health in a non-human primate model.
Reported Outcomes
Published studies report that the frequency 55 methafilcon a lens maintains ocular surface health and performs comparably to optimally fitted lenses. The studies focus on parameters like central corneal thickness and tear osmolarity.
Safety Profile
Reported complications include potential contact lens-induced dry eye (CLIDE) as observed in non-human primate models. No severe adverse events were noted in the available studies.
Evidence Limitations
The evidence is limited by the small number of studies and the use of non-human primate models, which may not fully replicate human ocular responses. Further research is needed to confirm findings in larger human populations.
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 are the clinical indications for frequency 55 methafilcon a contact lens?
The lens is indicated for vision correction in patients with refractive errors such as myopia and hyperopia.
What outcomes have been reported in clinical studies?
Studies report maintenance of ocular surface health and comparable performance to optimally fitted lenses.
What complications have been reported?
Safety data indicate potential for contact lens-induced dry eye, but no severe adverse events were reported.
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.