- ICH GCP
- US Clinical Trials Registry
- Clinical Trial NCT06905912
Comparison Between Spectacles and Contact Lenses
Comparison Between FL41 Tinted Spectacles, Biomedics55 Premier Contact Lenses, and Altius Tinted Contact Lenses on Photophobia
Study Overview
Status
Conditions
Intervention / Treatment
Detailed Description
Burstein et al. describe a shared neuronal pathway between processing light and migraine signals2. Vessels in the dura mater, which are stimulated during migraines, provide input to the Trigeminal Ganglion (TG), which travels to spinal nuclei, which have connections that synapse in the Lateral Posterior Nucleus (LPN). Some intrinsically photosensitive retinal ganglion cells (ipRGC) also synapse through the LPN. The ipRGC are stimulated by light spectra, such as blue light. The crosstalk between the synapses of the ipRGC and pathways from the dura mater vessels causes an overwhelming number of signals that can cause symptoms ranging from cognitive, visual, motor, olfactory, or auditory disfunctions. Thus, it seems reasonable that a reduction in the amount of light stimulation will help alleviate the overload of signals during a migraine, which will decrease the intensity.
FL-41 glasses filter out approximately 50% of blue light and have been shown effective for migraine reduction3. Altius tinted contact lenses filter out 99% of blue light and therefore should be more effective at reducing photophobia. Since the contact lens has direct contact with and coverage of the cornea, no unfiltered stray light is able to enter the eye thus enhancing its efficacy.
Study Type
Enrollment (Estimated)
Phase
- Not Applicable
Contacts and Locations
Study Contact
- Name: Jeffrey S Samples, AS
- Phone Number: 706-662-7878
- Email: scott-samples@dmei.org
Study Contact Backup
- Name: Andrew Melson, MD
- Phone Number: 405-271-6084
- Email: andrew-melson@dmei.org
Study Locations
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Oklahoma
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Oklahoma City, Oklahoma, United States, 73104
- Dean McGee Eye Institute
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Contact:
- Andrew Melson, MD
- Phone Number: 11091 405-271-1091
- Email: Andrew-Melson@dmei.org
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Participation Criteria
Eligibility Criteria
Ages Eligible for Study
- Adult
- Older Adult
Accepts Healthy Volunteers
Description
Two hundred voluntary subjects will be recruited by researching those who have purchased FL-41 tinted spectacles from the Dean McGee Eye Institute Optical Department. If this does not recruit enough subjects then subject referrals will be solicited from the patient population of the Dean McGee Eye Institute and/or neurology clinics throughout the Oklahoma City metro area.
Subjects must meet the following criteria in order to participate in this study:
- Subjects must have worn FL-41 tinted spectacles for at least one month prior to participating in this study.
- Subjects must have at least 20/30 distance visual acuity in each eye while wearing the contact lenses. Altius lenses are currently available in spherical powers from plano to -6.00.
- Subjects must demonstrate the ability to insert and remove contact lenses. Assistance from friends and family is acceptable.
- Subjects must not have an infectious or progressive ocular disease.
Subjects not meeting all of the above criteria will be excluded from participating in this study.
Early Termination:
If a subject feels their photophobia increases to an intolerable level, they can stop wearing that contact lens type and switch to the other the next day or terminate participation in the study. If this occurs, the data from those subjects will still be included in the study data analysis.
If a subject or physician feel that the health of their cornea is at risk, the subject will cease wearing all contact lenses and seek medical care from the Dean McGee Eye Institute.
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Study Plan
How is the study designed?
Design Details
- Primary Purpose: Supportive Care
- Allocation: N/A
- Interventional Model: Single Group Assignment
- Masking: None (Open Label)
Arms and Interventions
Participant Group / Arm |
Intervention / Treatment |
|---|---|
|
Experimental: Altius Tinted Contact Lenses
Subjects will be asked to wear either of the two tints available for ten days
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Biomedics55 Premier contact lenses, and Altius Tinted Contact Lenses
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What is the study measuring?
Primary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
|---|---|---|
|
Comparing FL-41 Tinted Eyeglasses, Biomedics 55 Premier, and Altius Grey-Green Tinted Contacts
Time Frame: baseline, after 10 days of wearing Biomedics 22 Premier contacts, and after 10 days of wearing Altius colored contacts.
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questionnaires - scale of 1 to 10 - no light sensitivity and 10 extreme light sensitivity
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baseline, after 10 days of wearing Biomedics 22 Premier contacts, and after 10 days of wearing Altius colored contacts.
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Secondary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
|---|---|---|
|
Evaluating FL-41 Tinted Spectacles
Time Frame: immediately after subject finished at least 30 days of wearing the spectacles but before wearing the Biomedics 55 Premier Contacts
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questionnaire - scale 1-10 :1-no light sensitivity and 10 extreme light sensitivity
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immediately after subject finished at least 30 days of wearing the spectacles but before wearing the Biomedics 55 Premier Contacts
|
|
Evaluating Biomedics 55 Premier Contacts
Time Frame: immediately after subject finished 10 days of wearing the Biomedics 55 premier contact lenses but before wearing the Altius tinted Contacts
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questionnaire - scale 1-10 :1-no light sensitivity and 10 extreme light sensitivity
|
immediately after subject finished 10 days of wearing the Biomedics 55 premier contact lenses but before wearing the Altius tinted Contacts
|
|
Evaluating Altius Grey-Green Tinted Contacts
Time Frame: immediately after subject finished 10 days of wearing the grey-green tinted contact lenses
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questionnaire - scale 1-10 :1-no light sensitivity and 10 extreme light sensitivity
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immediately after subject finished 10 days of wearing the grey-green tinted contact lenses
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Evaluating Altius Amber Tinted Contacts
Time Frame: immediately after subject finished 10 days of wearing the amber tinted contacts
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questionnaire - scale 1-10 :1-no light sensitivity and 10 extreme light sensitivity
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immediately after subject finished 10 days of wearing the amber tinted contacts
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Collaborators and Investigators
Sponsor
Collaborators
Investigators
- Principal Investigator: Andrew Melson, MD, University of Oklahoma
Publications and helpful links
General Publications
- Amiri P, Kazeminasab S, Nejadghaderi SA, Mohammadinasab R, Pourfathi H, Araj-Khodaei M, Sullman MJM, Kolahi AA, Safiri S. Migraine: A Review on Its History, Global Epidemiology, Risk Factors, and Comorbidities. Front Neurol. 2022 Feb 23;12:800605. doi: 10.3389/fneur.2021.800605. eCollection 2021.
- Blackburn MK, Lamb RD, Digre KB, Smith AG, Warner JE, McClane RW, Nandedkar SD, Langeberg WJ, Holubkov R, Katz BJ. FL-41 tint improves blink frequency, light sensitivity, and functional limitations in patients with benign essential blepharospasm. Ophthalmology. 2009 May;116(5):997-1001. doi: 10.1016/j.ophtha.2008.12.031.
- Burstein R, Noseda R, Fulton AB. Neurobiology of Photophobia. J Neuroophthalmol. 2019 Mar;39(1):94-102. doi: 10.1097/WNO.0000000000000766.
Study record dates
Study Major Dates
Study Start (Estimated)
Primary Completion (Estimated)
Study Completion (Estimated)
Study Registration Dates
First Submitted
First Submitted That Met QC Criteria
First Posted (Actual)
Study Record Updates
Last Update Posted (Actual)
Last Update Submitted That Met QC Criteria
Last Verified
More Information
Terms related to this study
Keywords
Additional Relevant MeSH Terms
Other Study ID Numbers
- 17528
Plan for Individual participant data (IPD)
Plan to Share Individual Participant Data (IPD)?
Drug and device information, study documents
Studies a U.S. FDA-regulated drug product
Studies a U.S. FDA-regulated device product
product manufactured in and exported from the U.S.
This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.
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