An observational study in Astigmatism, sponsored by Alcon Research. Completed at 1 site in United States. Open to participants aged 50 Years and older, including healthy volunteers. Per ClinicalTrials.gov, last updated 2012-04-09.
Sponsored by Alcon Research · Observational
To assess which commercially available measurement device is most accurate in measuring low (\< 1.0 D) degrees of corneal astigmatism.
413 studies on the registry are indexed under Astigmatism; 55 are open to participants now.
This study's enrollment of 50 is below the median of 93 across 84 observational studies indexed under Astigmatism.
Browse Astigmatism studies →Alcon Research is the lead sponsor of 608 studies on the registry; 9 are open to participants now.
Of its 109 completed or terminated interventional studies of FDA-regulated products, 99 (91%) have results posted.
Counted across the registry records on this site, refreshed daily.
community sample
Exclusion Criteria:
Measurement device
Measurement of corneal power
Time frame: Day 1
This study is completed, as verified in Jul 2009. You cannot join it, but the record below documents what was studied.
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Alcon Research