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Clinical Trial Summary

This study is evaluating the pupil dilation of Horner's Patients who have ever taken an alpha blocker such as Tamsulosin. Patients will undergo eye dilation as would occur at a yearly eye examination, but their pupil dilation measurements will be recorded.


Clinical Trial Description

This study will enroll 10 participants who have a unilateral Horner's Syndrome AND have a history of taking an alpha blocker such as Tamsulosin. Participants will be recruited based on those two enrollment criteria, and after consenting they will undergo pupil dilation with 10% phenylephrine. Once fully dilated the pupil size will be measured. Pupil dilation size of the eye affected by the Horner's Syndrome will be compared to the eye not affected by Horner's. Primary study outcome is the comparative dilation size of the Horner's affected eye to the non affected eye in all subjects. ;


Study Design


Related Conditions & MeSH terms


NCT number NCT03615508
Study type Interventional
Source Denver Health and Hospital Authority
Contact
Status Terminated
Phase Phase 4
Start date September 21, 2018
Completion date May 1, 2019

See also
  Status Clinical Trial Phase
Terminated NCT04642612 - Cerebral Blood Flow Evaluation With Trancranial Doppler After Interscalene Nerve Block
Completed NCT03514342 - The Effects of Horner's Syndrome Developing After Interscalene Brachial Plexus Block on Autonomic Nervous Activity