Tears Substitutions and Their Effects on Higher Order Aberrometery
Withdrawn before enrolling · Not applicable
Conditions studied: Dry Eye Syndrome
In brief
Hypothesis is that tear substitutions cause blur after they are instilled. The investigators will use aberrometry as a measurement over time after a tear formulation is used and try to determine if there are any measurable change in higher order aberrations between different tear formulations and how long it takes to return to pre-instillation measurements thus providing information on duration of the tear drop. 4 commercially available "dry eye" artificial tears formulations will be used and preservative saline will act as a control. The study will be conducted on subjects that do not have clinical evidence of dry eye syndrome to focus the data on the blur effects of the tear substitutions.
Key facts
- Study ID
- NCT00812721
- Run by
- Gina Rogers
- People needed
- 0
- Starts
- 2009-01-01
- Expected to finish
- 2009-07-01
- Last updated by the study team
- 2017-04-04
Who can join
Age: 18 and older, up to 85. Sex: any. Healthy volunteers: accepted.
You may qualify if…
- Subjects that do not have any complaints of dry eye and confirmed by ocular surface disease index questionnaire.
- Visually correctable to 20/20 in each eye.
- Non contact lens wearer.
- No history of systemic disease associated with dry eye syndromes.
- No current use of ocular medications.
- Adult volunteers who agree to HIPAA standards and sign informed consent.
You may not qualify if…
- Patients that have dry eye symptoms or slitlamp findings consistent with dry eye.
- Have a systemic condition that is associated with dry eye syndromes.
- Take systemic medications that have dry as a side effect
- Currently use artificial tears.
- Currently are using ocular medications.
- Currently wear contact lenses.
- Enrollment of the investigator's office staff, relatives, or members of their respective households.
- Enrollment of more than one member of the same household.
Where it is running
- University of Iowa Department of Ophthalmology and Visual Sciences — Iowa City, Iowa, United States
Full record on ClinicalTrials.gov
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