An observational study in Contact Lens Complication, Contact Lens Acute Red Eye and Contact Lens Related Corneal Infiltrate (Disorder), sponsored by Southern California College of Optometry at Marshall B. Ketchum University. Completed at 5 sites in 2 countries. Open to participants aged 18 Years to 39 Years. Per ClinicalTrials.gov, last updated 2019-09-18.
Sponsored by Southern California College of Optometry at Marshall B. Ketchum University · Observational
Specific Aims
This will be a multi-center, case-control prospective study. Subjects will be enrolled at five geographically diverse locations across North America. The intent is to enroll cases with new (untreated) red eyes and controls that are representative of the contact lens wearing population and test the new scoring algorithm on this population.
A total of 232 participants are expected to complete the study (116 case-control sets). Enrollment will be competitive. After consent, subjects will complete the Contact Lens Risk Survey (CLRS) online at www.claystudy.org. Data related to symptoms, medical history and anterior segment evaluation will be collected. Subjects will be treated as usual and customary by the investigator. No intervention of treatment in this study. Subjects will be asked to repeat the CLRS at one and six months post initial visit.
Initial factor analysis from the previous CLRS data were used to develop and test the CLRS algorithm. Five sub-scales were identified in the areas of contact lens care, contact lens dependence, hygiene, living arrangements and wellness. Assuming a 10% missing data rate, a total of 58 SCL wearers with "serious and significant" red eye events will allow for detection of 0.4 or larger effect size.
There are multiple steps to "compliant wear" of contact lenses and while many patients do many of the correct wear behaviors, it's not realistic for practitioners to re-educate all wearers on all of the steps necessary to successfully wear SCLs. The CLRS allows patients to quickly report their specific wear behaviors and then receive only the targeted information on which behaviors they are doing that puts them at higher risk. A previous CLAY study demonstrated good repeatability of the CLRS survey one week after initial fielding.
A total of 232 participants are expected to complete the study (116 case-control sets). Enrollment will be competitive; with each of five geographic locations in the United States and Canada enrolling approximately 24, but no more than 29 case-control sets until the total sample size of is achieved.
CASES
Exclusion Criteria:
CASES
Contact lens wearers who present to the eye care practitioner's office with a symptomatic red eye
Other: No intervention
No intervention, observation only
Also known as: No intervention, observation only
Validation of the Contact Lens Risk Survey (CLRS)
This study will further validate the CORS and facilitate its translation into clinical practice. A scoring algorithm will be developed.
Time frame: twelve months
Targeted Patient Education
Scripted patient education will be generated based on the results of the Contact Lens Risk Survey (CLRS) to determine if changes in behavior at the one and six month time point
Time frame: twelve months
Plan to share: No — No plans to share IPD
No publications or documents are linked to this record.
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Southern California College of Optometry at Marshall B. Ketchum University