Euclid Phoenix Lens Design Trial 2

Myopia Clinical Trial

Official title:

Euclid Phoenix Lens Design Trial Part 2

Clinical Trial Details — Status: Not yet recruiting

Administrative data

• NCT number: NCT06392607
• Other study ID #: EU-PHX-RCT-002
• Status: Not yet recruiting
• Phase: N/A
• Start date: May 2024
• Est. completion date: September 2025

Study information

• Verified date: April 2024
• Source: Euclid Systems Corporation
• Contact: Sally Dillehay, OD, EdD
• Phone: 7705214358?
• Email: sally.dillehay[@]clintrialsolutions.org
• Is FDA regulated: No
• Study type: Interventional

Clinical Trial Summary

Lens wettability and subjective comfort of Euclid orthokeratology lenses with and without an enhanced coating will be compared in 50 children. Axial elongation will be monitored in pediatric patients who qualify and consent.

Description:

The primary objective of this trial is to provide an assessment of the lens wettability and patient comfort with an enhanced surface treatment for the Emerald Lens design when used by practitioners with moderate experience with fitting Euclid orthokeratology lenses.

The hypothesis to be tested is that the proportion of participants with a lens wettability score of > 3 (on a 5 point scale) with the enhanced surface treatment will be greater than that of the current lens surface, using a 1 to 5 scale

The primary outcome variable is lens wettability as measured on eye using a 1 to 5 scale

This clinical investigation will be a prospective, randomized, double-masked two-arm non-crossover trial.

Recruitment information / eligibility

• Status: Not yet recruiting
• Enrollment: 50
• Est. completion date: September 2025
• Est. primary completion date: August 2025
• Accepts healthy volunteers: Accepts Healthy Volunteers
• Gender: All
• Age group: 6 Years to 35 Years

Eligibility

Inclusion Criteria:

• Be of legal age or, if under legal age have written consent of their parent or guardian to participate.

• Sign written Informed Consent (and the California Bill of Rights, if applicable).

• Ages 6-35 (inclusive) and able to understand and assent to participation

• Current wearers of Euclid Emerald (Oprifocon A) Orthokeratology lenses, which at initiation of fitting, had

• Need of optical correction for myopia, from -1.00 to -5.00 Diopters (D).

• Refractive astigmatism of less than -1.50 D.

• Have a minimum Best Spectacle Corrected Visual Acuity (BSCVA) of 20/40 or better in each eye.

• Have acceptable or optimal fit with study lenses (once fitting has been completed) and be willing to wear these lenses as directed for the duration of the study.

• On examination, have ocular findings considered to be within normal limits, including:

• No evidence of active infection involving the conjunctiva, lids or adnexa.

• No evidence of structural abnormalities of the lid, conjunctiva or adnexal tissue considered significant by the investigator to include minimum levels (Grade 2 or less) of tarsal-conjunctival abnormalities

• Clear corneas with no evidence of edema, staining, opacities, corneal neovascularization greater than a trace amount (i.e. All vessels extending less than 1.5 mm from the limbus); all as observed on slit lamp examination.

• No iritis.

• No herpes keratitis (recurrent or otherwise) or other active ocular disease that would contraindicate lens wear or lessen attainability of VA sought in this study (20/40 or better).

• No evidence of dry eye or meibomian gland dysfunction

• Normal binocularity (no amblyopia or strabismus, and no anisometropia of greater than 2.00D)

• Be willing and able to follow instructions and attend the schedule of follow-up visits.

Exclusion Criteria:

• Does not meet the any of the above inclusion criteria

• Not able or willing to provide informed consent and assent

• Requires concurrent ocular medication

• Eye injury or surgery within twelve weeks immediately prior to enrollment

• Pre-existing ocular condition that would preclude contact lens fitting

• Currently enrolled in an ophthalmic clinical trial

• Pregnant or lactating or expect to become pregnant during the trial

• Evidence of systemic or ocular abnormality, infection or disease likely to affect successful wear of contact lenses or use of their accessory solutions.

• Allergy or sensitivity to any product used in this trial

• Any systemic disease including autoimmune disease, immunocompromising diseases, connective tissue disease, clinically significant atopic diseases, insulin dependent diabetes, use of medications including corticosteroids and antimetabolites that may affect the eye or be exaggerated by contact lenses.

• Strabismus/amblyopia

• Habitual uncorrected anisometropia = 2.00D

• Subjects who have undergone corneal refractive surgery

• Subjects with severe corneal irregularity contraindicating lens wear

• Inability to wear contact lenses, or an unacceptable contact lens fit

• Poor or unacceptable fit with any study lens

• Employees, staff or family members of personnel at the site

Related Conditions & MeSH terms

• Cornea
• Myopia

Intervention

Device:
• Euclid orthokeratology (standard coating)
Lens with the current coating
• Euclid orthokeratology (enhanced coating)
Lens with the enhanced coating

Locations

Country	Name	City	State
United States	Cornea and Contact Lens Institute of Minnesota	Edina	Minnesota
United States	Specialty Eyecare Group	Kirkland	Washington
United States	Southern College of Optometry	Memphis	Tennessee
United States	Somerset Eye Care	North Brunswick	New Jersey
United States	Pinecone Vision Center	Sartell	Minnesota

Sponsors (1)

Lead Sponsor	Collaborator
Euclid Systems Corporation

Country where clinical trial is conducted

United States, 

Outcome

Type	Measure	Description	Time frame	Safety issue
Primary	Lens wettability	Lens wettability as measured on eye using a 1 to 5 scale	12 months
Secondary	Patient comfort ratings	Patient comfort as measured by patient reported outcome using a 1 to 5 scale	12 months