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Effect of non-invasive intranasal neurostimulation on tear volume, dryness and ocular pain.

Farhangi M, Cheng AM, Baksh B, Sarantopoulos CD, Felix ER, Levitt RC, Galor A.

Br J Ophthalmol. 2019 Dec 12. pii: bjophthalmol-2019-315065. doi: 10.1136/bjophthalmol-2019-315065. [Epub ahead of print]


The Genetics of Neuropathic Pain from Model Organisms to Clinical Application.

Calvo M, Davies AJ, Hébert HL, Weir GA, Chesler EJ, Finnerup NB, Levitt RC, Smith BH, Neely GG, Costigan M, Bennett DL.

Neuron. 2019 Nov 20;104(4):637-653. doi: 10.1016/j.neuron.2019.09.018. Review.


Pregabalin Failed to Prevent Dry Eye Symptoms after Laser-Assisted in Situ Keratomileusis (LASIK) in a Randomized Pilot Study.

Galor A, Patel S, Small LR, Rodriguez A, Venincasa MJ, Valido SE, Feuer W, Levitt RC, Sarantopoulos CD, Felix ER.

J Clin Med. 2019 Sep 1;8(9). pii: E1355. doi: 10.3390/jcm8091355.


Dysfunctional Coping Mechanisms Contribute to Dry Eye Symptoms.

Patel S, Felix ER, Levitt RC, Sarantopoulos CD, Galor A.

J Clin Med. 2019 Jun 24;8(6). pii: E901. doi: 10.3390/jcm8060901.


Oral Gabapentinoids and Nerve Blocks for the Treatment of Chronic Ocular Pain.

Small LR, Galor A, Felix ER, Horn DB, Levitt RC, Sarantopoulos CD.

Eye Contact Lens. 2019 Jun 14. doi: 10.1097/ICL.0000000000000630. [Epub ahead of print]


Profound analgesia is associated with a truncated peptide resulting from tissue specific alternative splicing of DRG CA8-204 regulated by an exon-level cis-eQTL.

Upadhyay U, Zhuang GZ, Diatchenko L, Parisien M, Kang Y, Sarantopoulos KD, Martin ER, Smith SB, Maixner W, Levitt RC.

PLoS Genet. 2019 Jun 14;15(6):e1008226. doi: 10.1371/journal.pgen.1008226. eCollection 2019 Jun.


Individuals with migraine have a different dry eye symptom profile than individuals without migraine.

Farhangi M, Diel RJ, Buse DC, Huang AM, Levitt RC, Sarantopoulos CD, Felix ER, Galor A.

Br J Ophthalmol. 2019 Apr 30. pii: bjophthalmol-2018-313471. doi: 10.1136/bjophthalmol-2018-313471. [Epub ahead of print]


Modification of the Neuropathic Pain Symptom Inventory for use in eye pain (NPSI-Eye).

Farhangi M, Feuer W, Galor A, Bouhassira D, Levitt RC, Sarantopoulos CD, Felix ER.

Pain. 2019 Jul;160(7):1541-1550. doi: 10.1097/j.pain.0000000000001552.


Resolution of pain with periocular injections in a patient with a 7-year history of chronic ocular pain.

Duerr ER, Chang A, Venkateswaran N, Goldhardt R, Levitt RC, Gregori NZ, Sarantopoulos CD, Galor A.

Am J Ophthalmol Case Rep. 2019 Feb 12;14:35-38. doi: 10.1016/j.ajoc.2019.02.001. eCollection 2019 Jun.


Photophobia and sensations of dryness in patients with migraine occur independent of baseline tear volume and improve following botulinum toxin A injections.

Diel RJ, Hwang J, Kroeger ZA, Levitt RC, Sarantopoulos CD, Sered H, Felix ER, Martinez-Barrizonte J, Galor A.

Br J Ophthalmol. 2019 Aug;103(8):1024-1029. doi: 10.1136/bjophthalmol-2018-312649. Epub 2018 Sep 29.


Epidemiology of Persistent Postsurgical Pain Manifesting as Dry Eye-Like Symptoms After Cataract Surgery.

Sajnani R, Raia S, Gibbons A, Chang V, Karp CL, Sarantopoulos CD, Levitt RC, Galor A.

Cornea. 2018 Dec;37(12):1535-1541. doi: 10.1097/ICO.0000000000001741.


Human carbonic anhydrase-8 AAV8 gene therapy inhibits nerve growth factor signaling producing prolonged analgesia and anti-hyperalgesia in mice.

Zhuang GZ, Upadhyay U, Tong X, Kang Y, Erasso DM, Fu ES, Sarantopoulos KD, Martin ER, Wiltshire T, Diatchenko L, Smith SB, Maixner W, Levitt RC.

Gene Ther. 2018 Jul;25(4):297-311. doi: 10.1038/s41434-018-0018-7. Epub 2018 Apr 24.


Epidemiology of Persistent Dry Eye-Like Symptoms After Cataract Surgery.

Iglesias E, Sajnani R, Levitt RC, Sarantopoulos CD, Galor A.

Cornea. 2018 Jul;37(7):893-898. doi: 10.1097/ICO.0000000000001491.


Evidence that dry eye is a comorbid pain condition in a U.S. veteran population.

Lee CJ, Levitt RC, Felix ER, Sarantopoulos CD, Galor A.

Pain Rep. 2017 Nov 20;2(6):e629. doi: 10.1097/PR9.0000000000000629. eCollection 2017 Nov.


The Relationship Between Ocular Itch, Ocular Pain, and Dry Eye Symptoms (An American Ophthalmological Society Thesis).

Galor A, Small L, Feuer W, Levitt RC, Sarantopoulos KD, Yosipovitch G.

Trans Am Ophthalmol Soc. 2018 Jan 17;115:T5. eCollection 2017 Aug.


Noninvasive Electrical Stimulation for the Treatment of Chronic Ocular Pain and Photophobia.

Sivanesan E, Levitt RC, Sarantopoulos CD, Patin D, Galor A.

Neuromodulation. 2018 Dec;21(8):727-734. doi: 10.1111/ner.12742. Epub 2017 Dec 28.


Neuropathic-Like Ocular Pain and Nonocular Comorbidities Correlate With Dry Eye Symptoms.

Chang VS, Rose TP, Karp CL, Levitt RC, Sarantopoulos C, Galor A.

Eye Contact Lens. 2018 Nov;44 Suppl 2:S307-S313. doi: 10.1097/ICL.0000000000000463.


Botulinum Toxin A for the Treatment of Photophobia and Dry Eye.

Diel RJ, Kroeger ZA, Levitt RC, Sarantopoulos C, Sered H, Martinez-Barrizonte J, Galor A.

Ophthalmology. 2018 Jan;125(1):139-140. doi: 10.1016/j.ophtha.2017.09.031. Epub 2017 Oct 27. No abstract available.


Neuropathic pain and dry eye.

Galor A, Moein HR, Lee C, Rodriguez A, Felix ER, Sarantopoulos KD, Levitt RC.

Ocul Surf. 2018 Jan;16(1):31-44. doi: 10.1016/j.jtos.2017.10.001. Epub 2017 Oct 12. Review.


Impact of human CA8 on thermal antinociception in relation to morphine equivalence in mice.

Fu ES, Erasso DM, Zhuang GZ, Upadhyay U, Ozdemir M, Wiltshire T, Sarantopoulos KD, Smith SB, Maixner W, Martin ER, Levitt RC.

Neuroreport. 2017 Dec 13;28(18):1215-1220. doi: 10.1097/WNR.0000000000000872.


Traumatic brain injury, dry eye and comorbid pain diagnoses in US veterans.

Lee CJ, Felix ER, Levitt RC, Eddy C, Vanner EA, Feuer WJ, Sarantopoulos CD, Galor A.

Br J Ophthalmol. 2018 May;102(5):667-673. doi: 10.1136/bjophthalmol-2017-310509. Epub 2017 Aug 26.


Epidemiology of discordance between symptoms and signs of dry eye.

Ong ES, Felix ER, Levitt RC, Feuer WJ, Sarantopoulos CD, Galor A.

Br J Ophthalmol. 2018 May;102(5):674-679. doi: 10.1136/bjophthalmol-2017-310633. Epub 2017 Aug 18.


Evidence that Dry Eye Represents a Chronic Overlapping Pain Condition.

Levitt AE, Galor A, Chowdhury AR, Felix ER, Sarantopoulos CD, Zhuang GY, Patin D, Maixner W, Smith SB, Martin ER, Levitt RC.

Mol Pain. 2017 Jan-Dec;13:1744806917729306. doi: 10.1177/1744806917729306. Review.


Car8 dorsal root ganglion expression and genetic regulation of analgesic responses are associated with a cis-eQTL in mice.

Levitt RC, Zhuang GY, Kang Y, Erasso DM, Upadhyay U, Ozdemir M, Fu ES, Sarantopoulos KD, Smith SB, Maixner W, Diatchenko L, Martin ER, Wiltshire T.

Mamm Genome. 2017 Oct;28(9-10):407-415. doi: 10.1007/s00335-017-9694-7. Epub 2017 May 25.


The Association of Dry Eye Symptom Severity and Comorbid Insomnia in US Veterans.

Galor A, Seiden BE, Park JJ, Feuer WJ, McClellan AL, Felix ER, Levitt RC, Sarantopoulos CD, Wallace DM.

Eye Contact Lens. 2018 Sep;44 Suppl 1:S118-S124. doi: 10.1097/ICL.0000000000000349.


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.

Crane AM, Feuer W, Felix ER, Levitt RC, McClellan AL, Sarantopoulos KD, Galor A.

Br J Ophthalmol. 2017 Sep;101(9):1238-1243. doi: 10.1136/bjophthalmol-2016-309658. Epub 2017 Jan 18.


Bulbar conjunctival microvascular responses in dry eye.

Chen W, Batawi HI, Alava JR, Galor A, Yuan J, Sarantopoulos CD, McClellan AL, Feuer WJ, Levitt RC, Wang J.

Ocul Surf. 2017 Apr;15(2):193-201. doi: 10.1016/j.jtos.2016.12.002. Epub 2016 Dec 29.


Longitudinal Examination of Frequency of and Risk Factors for Severe Dry Eye Symptoms in US Veterans.

Ong ES, Alghamdi YA, Levitt RC, McClellan AL, Lewis G, Sarantopoulos CD, Felix ER, Galor A.

JAMA Ophthalmol. 2017 Feb 1;135(2):116-123. doi: 10.1001/jamaophthalmol.2016.4925. Epub 2016 Dec 22.


Assessment of Somatosensory Function in Patients With Idiopathic Dry Eye Symptoms.

Galor A, Levitt RC, McManus KT, Kalangara JP, Seiden BE, Park JJ, Covington DB, Sarantopoulos CD, Felix ER.

JAMA Ophthalmol. 2016 Nov 1;134(11):1290-1298. doi: 10.1001/jamaophthalmol.2016.3642.


ω-3 Tear Film Lipids Correlate With Clinical Measures of Dry Eye.

Walter SD, Gronert K, McClellan AL, Levitt RC, Sarantopoulos KD, Galor A.

Invest Ophthalmol Vis Sci. 2016 May 1;57(6):2472-8. doi: 10.1167/iovs.16-19131.


Patients with more severe symptoms of neuropathic ocular pain report more frequent and severe chronic overlapping pain conditions and psychiatric disease.

Crane AM, Levitt RC, Felix ER, Sarantopoulos KD, McClellan AL, Galor A.

Br J Ophthalmol. 2017 Feb;101(2):227-231. doi: 10.1136/bjophthalmol-2015-308214. Epub 2016 Apr 29.


Characteristics of Ocular Pain Complaints in Patients With Idiopathic Dry Eye Symptoms.

Kalangara JP, Galor A, Levitt RC, Covington DB, McManus KT, Sarantopoulos CD, Felix ER.

Eye Contact Lens. 2017 May;43(3):192-198. doi: 10.1097/ICL.0000000000000249.


Corneal Mechanical Thresholds Negatively Associate With Dry Eye and Ocular Pain Symptoms.

Spierer O, Felix ER, McClellan AL, Parel JM, Gonzalez A, Feuer WJ, Sarantopoulos CD, Levitt RC, Ehrmann K, Galor A.

Invest Ophthalmol Vis Sci. 2016 Feb;57(2):617-25. doi: 10.1167/iovs.15-18133.


Burning Eye Syndrome: Do Neuropathic Pain Mechanisms Underlie Chronic Dry Eye?

Kalangara JP, Galor A, Levitt RC, Felix ER, Alegret R, Sarantopoulos CD.

Pain Med. 2016 Apr;17(4):746-55. doi: 10.1093/pm/pnv070. Epub 2015 Dec 24. Review.


Dry Eye Profiles in Patients with a Positive Elevated Surface Matrix Metalloproteinase 9 Point-of-Care Test Versus Negative Patients.

Lanza NL, McClellan AL, Batawi H, Felix ER, Sarantopoulos KD, Levitt RC, Galor A.

Ocul Surf. 2016 Apr;14(2):216-23. doi: 10.1016/j.jtos.2015.12.007. Epub 2016 Jan 22.


HSV vector-mediated GAD67 suppresses neuropathic pain induced by perineural HIV gp120 in rats through inhibition of ROS and Wnt5a.

Kanda H, Kanao M, Liu S, Yi H, Iida T, Levitt RC, Candiotti KA, Lubarsky DA, Hao S.

Gene Ther. 2016 Apr;23(4):340-8. doi: 10.1038/gt.2016.3. Epub 2016 Jan 11.


What can photophobia tell us about dry eye?

Galor A, Levitt RC, Felix ER, Sarantopoulos CD.

Expert Rev Ophthalmol. 2016;11(5):321-324. doi: 10.1080/17469899.2016.1222905. Epub 2016 Aug 23. No abstract available.


Neuropathic Ocular Pain due to Dry Eye is Associated with Multiple Comorbid Chronic Pain Syndromes.

Galor A, Covington D, Levitt AE, McManus KT, Seiden B, Felix ER, Kalangara J, Feuer W, Patin DJ, Martin ER, Sarantopoulos KD, Levitt RC.

J Pain. 2016 Mar;17(3):310-8. doi: 10.1016/j.jpain.2015.10.019. Epub 2015 Dec 1.


Inhibition of Mitochondrial Fission Protein Reduced Mechanical Allodynia and Suppressed Spinal Mitochondrial Superoxide Induced by Perineural Human Immunodeficiency Virus gp120 in Rats.

Kanda H, Liu S, Iida T, Yi H, Huang W, Levitt RC, Lubarsky DA, Candiotti KA, Hao S.

Anesth Analg. 2016 Jan;122(1):264-72. doi: 10.1213/ANE.0000000000000962.


Incomplete response to artificial tears is associated with features of neuropathic ocular pain.

Galor A, Batawi H, Felix ER, Margolis TP, Sarantopoulos KD, Martin ER, Levitt RC.

Br J Ophthalmol. 2016 Jun;100(6):745-9. doi: 10.1136/bjophthalmol-2015-307094. Epub 2015 Sep 16.


Human Tear Serotonin Levels Correlate with Symptoms and Signs of Dry Eye.

Chhadva P, Lee T, Sarantopoulos CD, Hackam AS, McClellan AL, Felix ER, Levitt RC, Galor A.

Ophthalmology. 2015 Aug;122(8):1675-80. doi: 10.1016/j.ophtha.2015.04.010. Epub 2015 May 14.


Chronic dry eye symptoms after LASIK: parallels and lessons to be learned from other persistent post-operative pain disorders.

Levitt AE, Galor A, Weiss JS, Felix ER, Martin ER, Patin DJ, Sarantopoulos KD, Levitt RC.

Mol Pain. 2015 Apr 21;11:21. doi: 10.1186/s12990-015-0020-7. Review.


Gene Transfer of Glutamic Acid Decarboxylase 67 by Herpes Simplex Virus Vectors Suppresses Neuropathic Pain Induced by Human Immunodeficiency Virus gp120 Combined with ddC in Rats.

Kanao M, Kanda H, Huang W, Liu S, Yi H, Candiotti KA, Lubarsky DA, Levitt RC, Hao S.

Anesth Analg. 2015 Jun;120(6):1394-404. doi: 10.1213/ANE.0000000000000729.


Carbonic anhydrase-8 regulates inflammatory pain by inhibiting the ITPR1-cytosolic free calcium pathway.

Zhuang GZ, Keeler B, Grant J, Bianchi L, Fu ES, Zhang YP, Erasso DM, Cui JG, Wiltshire T, Li Q, Hao S, Sarantopoulos KD, Candiotti K, Wishnek SM, Smith SB, Maixner W, Diatchenko L, Martin ER, Levitt RC.

PLoS One. 2015 Mar 3;10(3):e0118273. doi: 10.1371/journal.pone.0118273. eCollection 2015.


Dry eye symptoms align more closely to non-ocular conditions than to tear film parameters.

Galor A, Felix ER, Feuer W, Shalabi N, Martin ER, Margolis TP, Sarantopoulos CD, Levitt RC.

Br J Ophthalmol. 2015 Aug;99(8):1126-9. doi: 10.1136/bjophthalmol-2014-306481. Epub 2015 Feb 20.


Understanding the true burden of dry eye disease.

Galor A, Levitt RC, Felix ER, Sarantopoulos CD.

Expert Rev Ophthalmol. 2015;10(5):403-405. Epub 2015 Jun 26.


Neuropathic ocular pain: an important yet underevaluated feature of dry eye.

Galor A, Levitt RC, Felix ER, Martin ER, Sarantopoulos CD.

Eye (Lond). 2015 Mar;29(3):301-12. doi: 10.1038/eye.2014.263. Epub 2014 Nov 7. Review.


Dry eye symptom severity and persistence are associated with symptoms of neuropathic pain.

Galor A, Zlotcavitch L, Walter SD, Felix ER, Feuer W, Martin ER, Margolis TP, Sarantopoulos KD, Levitt RC.

Br J Ophthalmol. 2015 May;99(5):665-8. doi: 10.1136/bjophthalmol-2014-306057. Epub 2014 Oct 21.


Agrin requires specific proteins to selectively activate γ-aminobutyric acid neurons for pain suppression.

Erasso D, Tender G, Levitt RC, Cui JG.

Exp Neurol. 2014 Nov;261:646-53. doi: 10.1016/j.expneurol.2014.08.014. Epub 2014 Aug 21.


Interleukin 10 mediated by herpes simplex virus vectors suppresses neuropathic pain induced by human immunodeficiency virus gp120 in rats.

Zheng W, Huang W, Liu S, Levitt RC, Candiotti KA, Lubarsky DA, Hao S.

Anesth Analg. 2014 Sep;119(3):693-701. doi: 10.1213/ANE.0000000000000311.

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