Contact lens comfort Eye Diseases Contact lens comfort
Conditions
Interventions
Subjects will attend the clinic on two study days. On each day, subjects attended the clinic in the morning without any lenses in situ (and not having worn lenses beforehand on the day). A new pair of
subjects will then be asked to fully blink five times, and then the lens will be slid back onto the cornea
4. No action (control): the contact lens will not be manipulated in any way
Sponsors
University of Manchester
Eligibility
Sex/Gender
All
Inclusion criteria
Inclusion criteria: 1. At least 18 years old and capacity to volunteer 2. Understand rights as a research subject 3. Willing and able to ?sign a statement of informed consent 4. Willing and able to follow the protocol 5. Agree not to participate in other clinical research for the duration of this study 6. Wear daily disposable soft contact lenses and have worn them for at least 6 months 7. Symptomatic according to method by Young et al (Characterizing contact lens-related dryness symptoms in a cross-section of UK soft lens wearers. Contact Lens and Anterior Eye 2011; 34: 64–70) 8. Willing to wear contact lenses for at least 12 hours a day 9. Having a mobile phone
Exclusion criteria
Exclusion criteria: 1. Systemic or ocular disorder that might affect ocular health 2. Grade 2 or greater of any anterior ocular clinical signs 3. Use of any topical medication, such as eye drops or ointment 4. Previous cataract or corneal refractive surgery 5. Corneal distortion resulting from previous hard or rigid lens wear or keratoconus 6. Pregnant or lactating 7. Diabetes 8. Infectious disease (e.g., hepatitis) 9. Immunosuppressive disease (e.g., HIV) 10. History of severe allergic reaction or anaphylaxis (a serious form of hypersensitivity that can, in rare cases, result in death) 11. Unacceptable lens fit (grade –2 or +2 on a –2 to +2 grading scale) 12. Participation in other clinical trial or research within 2 weeks before starting this study
Design outcomes
Primary
| Measure | Time frame |
|---|---|
| 1. Contact lens comfort score will be measured with an annotated vertical analogue comfort scale of 0 (causes pain, cannot be tolerated) and 100 (excellent, cannot be felt) and recorded on paper before lens application, 5 hours post-application, and 6 minutes post-intervention 2. Comfort scores at 6 minutes post-application and at every hour following lens application will be collected through SMS messaging using the same scale; only SMS comfort scores received within 30 minutes from the target time will be included in the analysis | — |
Countries
England, United Kingdom
Contacts
Public ContactMaria Navascues-Cornago
Outcome results
None listed