RecruitingNot ApplicableNCT04187599

Post-market Follow Up Study on Paragon CRT® 100 (Paflufocon D)

Post-market Follow Up Study on Paragon CRT® 100 (Paflufocon D) Rigid Gas Permeable Contact Lenses for Corneal Refractive Therapy for Temporary Myopic Refractive Power Reduction


Sponsor

CooperVision International Limited (CVIL)

Enrollment

250 participants

Start Date

Aug 29, 2019

Study Type

INTERVENTIONAL

Conditions

Summary

The main objective of this post market clinical study is to evaluate the effectiveness and safety of the Paragon CRT®100 Contact Lens.


Eligibility

Min Age: 8 Years

Inclusion Criteria6

  • Patient contact lens refraction should fit within the available parameters of the study lenses (spherical power within -4.00D and the cylinder power within 1.50D).
  • Is willing to comply with the wear and visit schedule.
  • Is willing to participate and signed the informed consent form.
  • History of any ocular operations
  • Unable to follow investigator's instruction
  • Any other condition not suitable for the study per investigator's judgement

Exclusion Criteria16

  • Age under 8 years old
  • Any ocular abnormalities, undergone corneal surgery, or history of ocular trauma, active corneal infections (corneal inflammation), corneal curvature less than 40.00D or more than 46.00D
  • Best corrected visual acuity less than 1.0D
  • Pregnant, lactating or near-pregnancy
  • The eye has the following conditions:
  • Acute and subacute inflammations or infection of the anterior segment of the eye
  • Any eye disease, injury, or abnormality that affects the cornea, conjunctiva or eyelids, e.g. dacryocystitis, conjunctivitis, blepharitis and other inflammation, glaucoma, etc.
  • Severe insufficiency of tears (TBUT≤5s).
  • Allergy to any ingredient, such as mercury or thimerosal, in a solution which is to be used to care
  • Any active corneal infection (bacterial, fungal or viral).
  • Manifested strabismus
  • Abnormal intra-ocular pressure
  • Suffering from systemic diseases, resulting in low immunity, or affecting corneal re-shaping (such as acute and chronic sinusitis, diabetes, Down syndrome, rheumatoid arthritis, mental patients, etc.)
  • Under medications or long-term medications that lead to dry eye with clinical signs or affects vision and corneal curvature.
  • Examination result indicate any contraindication or not suitable for OrthoK lens wear
  • Participated in pharmaceutical clinical study 3 months before the date of the screening or participated any other medical devices research study within 30 days of the screening

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Interventions

DEVICEParagon CRT®100 Contact Lens

Paragon CRT® 100 Contact Lenses for Corneal Refractive Therapy are indicated for use in the reduction of myopic refractive error in nondiseased eyes.


Locations(4)

Changsha Aier Eye Hospital

Shanghai, China

Eye & ENT Hospital of Fudan University

Shanghai, China

Tianjin Eye Hospital

Tianjin, China

The Affiliated Eye Hospital of Wenzhou Medical University

Wenzhou, China

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NCT04187599


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