An observational study in Dry Eye Syndromes, Hyaluronic Acid and OSDI, sponsored by University of Valladolid. Completed at 1 site in Spain. Open to participants aged 18 Years to 90 Years, including healthy volunteers. Per ClinicalTrials.gov, last updated 2024-07-17.
Sponsored by University of Valladolid · Observational
This study assessed the differences in DED symptomatology measured with the OSDI questionnaire regarding climate data of the geographic location in a large population in Spain, with a special focus on the relative humidity (RH) of the place of residence and the impact of artificial tears use, to help eye care practitioners in patient management and education
This was a multicentre study enrolling patients to attend primary eye care centres of the EMO research group across 12 different Spanish locations. A comprehensive eye examination was performed in all participants. Dryness symptomatology was assessed with OSDI questionnaire. In subjects with dryness symptomatology (OSDI questionnaire score between 13 and 32) were prescribed to use high molecular weight HA-based artificial tears (DISOP Inc, Spain) along three months), instilled 3 times per day.
Additionally, the daily mean, minimum, and maximum values of the climate data for five different variables [skin temperature (°C), wind gusts (m/s), air temperature (°C), atmospheric pressure (Pa) and RH (%)] corresponding to the visit date were collected from the EU-funded Copernicus Climate Change Service and the 5-year average RH values published by the Spanish meteorological agency.
1,325 studies on the registry are indexed under Dry Eye Syndromes; 193 are open to participants now.
This study's enrollment of 1,033 is above the median of 89 across 176 observational studies indexed under Dry Eye Syndromes.
Browse Dry Eye Syndromes studies →University of Valladolid is the lead sponsor of 33 studies on the registry; 8 are open to participants now.
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Health volunteers
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Exclusion Criteria:
use of high molecular weight HA-based artificial tears three times per day
OSDI Score
Change in the Ocular Surface Disease Index (OSDI) score ranged from 0 (asymptomatic) to 100 (severe dry eye)
Time frame: three months
Plan to share: No — Data will be available by request to PI
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This study is completed, as verified in Jul 2024. You cannot join it, but the record below documents what was studied.
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University of Valladolid