Effect of Trigeminal Nerve Stimulation on Corneal Nerves and Chronic Ocular Pain
NCT ID: NCT04648085
Last Updated: 2022-01-18
Study Results
The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.
Basic Information
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COMPLETED
NA
7 participants
INTERVENTIONAL
2021-02-03
2021-12-10
Brief Summary
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Detailed Description
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This research protocol evaluates the effect of transcutaneous stimulation on corneal subbasal plexus density and chronic eye pain in patients with dry eye. A complete dry eye examination will be performed, including completion of Ocular Surface Disease Index (OSDI) and Dry Eye Questionnaire-5 (DEQ-5). Subbasal nerves density will be measured by confocal microscopy before and after receiving treatment with TNS. In addition, monthly monitoring of the intensity of ocular pain (with a numerical scale of 0-10) will be maintained. The intensity and severity of the clinical variables will be compared before and after receiving the treatment with a paired t-test considering a value of p\<0.05 as statistically significant.
Conditions
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Study Design
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NA
SINGLE_GROUP
SUPPORTIVE_CARE
NONE
Study Groups
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Pre and Post Treatment with Trigeminal Nerve Stimulation (TNS)
Individuals will receive treatment with trigeminal nerve stimulation for 20 minutes at a frequency of 100 Hertz (Hz). Ocular pain intensity will be recorded prior and after the use of therapy.
Trigeminal Nerve Stimulation
Applied to to the forehead using a self-adhesive electrode positioned bilaterally over the upper branches of the trigeminal nerve.The device generates electrical impulses allowing to stimulate the trigeminal nerve.
Interventions
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Trigeminal Nerve Stimulation
Applied to to the forehead using a self-adhesive electrode positioned bilaterally over the upper branches of the trigeminal nerve.The device generates electrical impulses allowing to stimulate the trigeminal nerve.
Eligibility Criteria
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Inclusion Criteria
Exclusion Criteria
18 Years
ALL
Yes
Sponsors
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Instituto de Oftalmología Fundación Conde de Valenciana
OTHER
Responsible Party
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Principal Investigators
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Simran Mangwani Mordani, MD
Role: PRINCIPAL_INVESTIGATOR
Instituto de Oftalmología Conde de Valenciana
Locations
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Instituto de Oftalmología Conde de Valenciana
Mexico City, Mexico City, Mexico
Countries
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References
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Galor A, Moein HR, Lee C, Rodriguez A, Felix ER, Sarantopoulos KD, Levitt RC. Neuropathic pain and dry eye. Ocul Surf. 2018 Jan;16(1):31-44. doi: 10.1016/j.jtos.2017.10.001. Epub 2017 Oct 12.
Craig JP, Nelson JD, Azar DT, Belmonte C, Bron AJ, Chauhan SK, de Paiva CS, Gomes JAP, Hammitt KM, Jones L, Nichols JJ, Nichols KK, Novack GD, Stapleton FJ, Willcox MDP, Wolffsohn JS, Sullivan DA. TFOS DEWS II Report Executive Summary. Ocul Surf. 2017 Oct;15(4):802-812. doi: 10.1016/j.jtos.2017.08.003. Epub 2017 Aug 8.
De Paiva CS, Corrales RM, Villarreal AL, Farley WJ, Li DQ, Stern ME, Pflugfelder SC. Corticosteroid and doxycycline suppress MMP-9 and inflammatory cytokine expression, MAPK activation in the corneal epithelium in experimental dry eye. Exp Eye Res. 2006 Sep;83(3):526-35. doi: 10.1016/j.exer.2006.02.004. Epub 2006 Apr 27.
Karson CN, Burns RS, LeWitt PA, Foster NL, Newman RP. Blink rates and disorders of movement. Neurology. 1984 May;34(5):677-8. doi: 10.1212/wnl.34.5.677.
Dworkin RH, O'Connor AB, Kent J, Mackey SC, Raja SN, Stacey BR, Levy RM, Backonja M, Baron R, Harke H, Loeser JD, Treede RD, Turk DC, Wells CD. Interventional management of neuropathic pain: NeuPSIG recommendations. Pain. 2013 Nov;154(11):2249-2261. doi: 10.1016/j.pain.2013.06.004. Epub 2013 Jun 6.
Kalangara JP, Galor A, Levitt RC, Covington DB, McManus KT, Sarantopoulos CD, Felix ER. Characteristics of Ocular Pain Complaints in Patients With Idiopathic Dry Eye Symptoms. Eye Contact Lens. 2017 May;43(3):192-198. doi: 10.1097/ICL.0000000000000249.
Farhangi M, Feuer W, Galor A, Bouhassira D, Levitt RC, Sarantopoulos CD, Felix ER. Modification of the Neuropathic Pain Symptom Inventory for use in eye pain (NPSI-Eye). Pain. 2019 Jul;160(7):1541-1550. doi: 10.1097/j.pain.0000000000001552.
Woolf CJ, Salter MW. Neuronal plasticity: increasing the gain in pain. Science. 2000 Jun 9;288(5472):1765-9. doi: 10.1126/science.288.5472.1765.
Crane AM, Feuer W, Felix ER, Levitt RC, McClellan AL, Sarantopoulos KD, Galor A. Evidence of central sensitisation in those with dry eye symptoms and neuropathic-like ocular pain complaints: incomplete response to topical anaesthesia and generalised heightened sensitivity to evoked pain. Br J Ophthalmol. 2017 Sep;101(9):1238-1243. doi: 10.1136/bjophthalmol-2016-309658. Epub 2017 Jan 18.
Matsumoto Y, Ibrahim OMA. Application of In Vivo Confocal Microscopy in Dry Eye Disease. Invest Ophthalmol Vis Sci. 2018 Nov 1;59(14):DES41-DES47. doi: 10.1167/iovs.17-23602.
Tavakoli M, Hossain P, Malik RA. Clinical applications of corneal confocal microscopy. Clin Ophthalmol. 2008 Jun;2(2):435-45. doi: 10.2147/opth.s1490.
Zhang M, Chen J, Luo L, Xiao Q, Sun M, Liu Z. Altered corneal nerves in aqueous tear deficiency viewed by in vivo confocal microscopy. Cornea. 2005 Oct;24(7):818-24. doi: 10.1097/01.ico.0000154402.01710.95.
Alhatem A, Cavalcanti B, Hamrah P. In vivo confocal microscopy in dry eye disease and related conditions. Semin Ophthalmol. 2012 Sep-Nov;27(5-6):138-48. doi: 10.3109/08820538.2012.711416.
Kinard KI, Smith AG, Singleton JR, Lessard MK, Katz BJ, Warner JE, Crum AV, Mifflin MD, Brennan KC, Digre KB. Chronic migraine is associated with reduced corneal nerve fiber density and symptoms of dry eye. Headache. 2015 Apr;55(4):543-9. doi: 10.1111/head.12547. Epub 2015 Mar 31.
Aggarwal S, Kheirkhah A, Cavalcanti BM, Cruzat A, Colon C, Brown E, Borsook D, Pruss H, Hamrah P. Autologous Serum Tears for Treatment of Photoallodynia in Patients with Corneal Neuropathy: Efficacy and Evaluation with In Vivo Confocal Microscopy. Ocul Surf. 2015 Jul;13(3):250-62. doi: 10.1016/j.jtos.2015.01.005. Epub 2015 Feb 20.
Small LR, Galor A, Felix ER, Horn DB, Levitt RC, Sarantopoulos CD. Oral Gabapentinoids and Nerve Blocks for the Treatment of Chronic Ocular Pain. Eye Contact Lens. 2020 May;46(3):174-181. doi: 10.1097/ICL.0000000000000630.
Sivanesan E, Levitt RC, Sarantopoulos CD, Patin D, Galor A. Noninvasive Electrical Stimulation for the Treatment of Chronic Ocular Pain and Photophobia. Neuromodulation. 2018 Dec;21(8):727-734. doi: 10.1111/ner.12742. Epub 2017 Dec 28.
Noseda R, Burstein R. Migraine pathophysiology: anatomy of the trigeminovascular pathway and associated neurological symptoms, cortical spreading depression, sensitization, and modulation of pain. Pain. 2013 Dec;154 Suppl 1:S44-53. doi: 10.1016/j.pain.2013.07.021. Epub 2013 Jul 25.
Zayan K, Aggarwal S, Felix E, Levitt R, Sarantopoulos K, Galor A. Transcutaneous Electrical Nerve Stimulation for the Long-Term Treatment of Ocular Pain. Neuromodulation. 2020 Aug;23(6):871-877. doi: 10.1111/ner.13146. Epub 2020 Mar 20.
Martinez JD, Galor A, Ramos-Betancourt N, Lisker-Cervantes A, Beltran F, Ozorno-Zarate J, Sanchez-Huerta V, Torres-Vera MA, Hernandez-Quintela E. Frequency and risk factors associated with dry eye in patients attending a tertiary care ophthalmology center in Mexico City. Clin Ophthalmol. 2016 Jul 21;10:1335-42. doi: 10.2147/OPTH.S106451. eCollection 2016.
Galor A, Feuer W, Lee DJ, Florez H, Venincasa VD, Perez VL. Ocular surface parameters in older male veterans. Invest Ophthalmol Vis Sci. 2013 Feb 19;54(2):1426-33. doi: 10.1167/iovs.12-10819.
Patel DV, McGhee CN. Mapping of the normal human corneal sub-Basal nerve plexus by in vivo laser scanning confocal microscopy. Invest Ophthalmol Vis Sci. 2005 Dec;46(12):4485-8. doi: 10.1167/iovs.05-0794.
Other Identifiers
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CI-006-2020
Identifier Type: -
Identifier Source: org_study_id
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