Quantifying Ocular Surface Aberrations After Tear Film Interventions
The CA-800 Corneal Analyzer (Visia Imaging S.R.L., Italy) is a device that can measure small imperfections in the tear film when the eyes are open. The goal of this study is to see if the device can detect changes in the tear film after instillation of an eye drop or when contact lenses are worn.
• Are at least 17 years of age and have full legal capacity to volunteer.
• Have signed the information consent letter.
• Are willing and able to follow instructions and maintain the appointment schedule.
• Habitually wear spherical soft contact lenses (no multifocal lens, no toric lens wear or extended (overnight) wear).
• Have a vertex-corrected refractive astigmatism of no more than 0.75D in each eye.
• Achieve a best corrected visual acuity of 0.00 logMAR or better in each eye.
• Agree to wear the study contact lenses for at least 6 hours.
• Have clear corneas (e.g. no central scars).
• Have no active ocular disease or inflammation.