Category Archives: current contact lens wearers

New contact lens study (Study ID: DINGO)

What are we trying to learn?

We are aiming to find out which of these two lenses is easier to handle and also which one suits you the best. You will be asked to wear each lens for a 1-month period.

About the study

The study has several study visits over approximately a 3-4 month period:

  • Visit 1 – Screening visit to determine eligibility and initial lens fit – 1.5 hours
  • Visit 2 – Lens fitting, continued (for some, additional visits may be required) – 1.5 hour
  • Visit 3 – Provide lens pair #1 (may be combined with Visit 2) – 0.5 hour
  • Visit 4 – Review & optimize contact lens prescription, after 3-7 days – 0.5 hour
  • Visit 5 – End of month follow-up visit  – 1 hour
  • Visit 6 – Provide lens pair #2 (may be combined with Visit 5) – 0.5 hour
  • Visit 7 – Review & optimize contact lens prescription, after 3-7 days – 0.5 hour
  • Visit 8 – End of month follow-up visit  – 0.75 hour
  • Visit 9 – Exit study  – 0.25 hour

Total visit time commitment – estimated 7 hours

The visits will include standard clinical procedures that you might encounter when you attend a routine contact lens eye exam.

Please note that you will be within 2m (6 feet) of the researcher during some or most of your study visit time. At all times, the furthest possible distance will be maintained. There are some questionnaires to be completed between study visits, estimated maximum time commitment of 1 hour spread across the study period.

What are the requirements?

  • Age ≥42 years, needing a prescription for astigmatism (at least -0.75 cylinder) and needing additional help for close focus (at least +0.75DS).
  • Generally in good health.
  • Currently wear some type of soft contact lens, but do not habitually wear either of the study contact lenses.
  • Anticipate being able to wear the study lenses for at least 8 hours a day, 5 days a week.
  • Can be fit with the two study lens types (sphere +4 to -6, cylinder -0.75 to -1.75, ADD +0.75 to +2.50).

Reimbursement

In appreciation of your time, you will receive at least $160 for completing all questionnaires and study visits. This may increase of you require additional lens fitting visits, prorated at $20 per hour. All study products will be provided.


How to participate

If you are interested in participating, please email corestudies@uwaterloo.ca with the subject line: DINGO.  You will be provided with all relevant study information prior to study enrolment and you are under no obligation to participate. 

New contact lens study (Study ID: MIKI)

This study will compare two different daily disposable contact lenses and evaluate the performance of these two lenses by taking measurements and asking you questions about your lens wearing experience. 

About the study

This study will be conducted over approximately 2 weeks. The study visits are:

  • Visit #1 & 2 (normally both visits are combined) – Screening visit to determine eligibility (1.25 hrs) anddispensing of study lenses (0.75 hrs) – 2 hours total
  • Visit #3 & 4 – (normally both visits are combined) – 1-week follow-up visit (0.75 hr) and dispensing of study lenses (0.75 hr) –  (1.5 hours total)
  • Visit #5 – 1-week follow-up visit and study exit. – (1 hour)

Total time commitment5.5 hours (time includes 4.5 hours for study visits plus 1 additional hour for at-home tasks)

The visits will include standard clinical procedures that you might encounter when you attend an eye exam.

What are the requirements?

  • You are at least 17 years of age.
  • You habitually wear soft contact lenses at least 8 hours/day, 5 days per week.
  • You anticipate no difficulty in wearing soft contact lenses for 12 hours/day.
  • You can be fit with the two study contact lenses in the powers available (-2.00 to -5.00 D).

How to participate

If you are interested in participating, please email corestudies@uwaterloo.ca with the subject line: MIKI.  You will be provided with all relevant study information prior to study enrolment and you are under no obligation to participate.