Presbyopia vision correction using multifocal contact lenses Eye Diseases
Conditions
Interventions
Each participant attends the clinic on three occasions.
At the first visit after being screened and enrolled in the study, their eyes are examined and they are fitted and dispensed wit
Sponsors
CooperVision (United States)
Eligibility
Sex/Gender
All
Inclusion criteria
Inclusion criteria: 1. At least 40 years old 2. Have read and understood the Participant Information Sheet in English 3. Have read, signed and dated the Informed Consent 4. Best corrected visual acuity of at least 20/25 in each eye 5. Have normal eyes with the exception of the need for visual correction 6. Current multifocal soft contact lens wearer 7. Spectacle refraction: Distance: Sphere: -6.00D to + 4.00D Astigmatism: 0.00D to -0.75D Near Addition: +0.75D to +2.50D 8. Be willing and able to adhere to the instructions set in the clinical protocol and maintain the appointment schedule
Exclusion criteria
Exclusion criteria: 1. Currently wearing study contact lenses 2. Ocular anterior segment infection, inflammation, abnormality, or active disease that would contraindicate contact lens wear 3. Newly prescribed use of some systemic or ocular medications for which contact lens wear could be contraindicated as determined by the investigator 4. Monocular participants (only one eye with functional vision) or participants fit with only one lens 5. Any moderate or severe ocular condition observed during the slit-lamp examination at the enrolment visit 6. History of herpetic keratitis, ocular surgery or irregular cornea 7. Known pregnancy or lactation during the study period 8. Enrolment of the investigator or his/her staff, family members of the investigator, family members of the investigator’s staff, or individuals living in the households of these individuals
Design outcomes
Primary
| Measure | Time frame |
|---|---|
| Overall binocular vision satisfaction measured on a 100 point Visual Analogue scale at the end of the wearing period 7 +2/-1 days of wear. | — |
Secondary
| Measure | Time frame |
|---|---|
| Overall binocular visual performance measured as the mean of the distance and near LogMar visual acuity after 7 +2/-1 days of wear. | — |
Countries
United Kingdom
Contacts
Public ContactDeborah Moore
Outcome results
None listed