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Reduction of congenital nystagmus in a patient after smoking cannabis.
Strabismus 2008 Jan-Mar; 16(1):29-32S

Abstract

INTRODUCTION

Smoking cannabis has been described to reduce acquired pendular nystagmus in MS, but its effect on congenital nystagmus is not known.

PURPOSE

To report the effect of smoking cannabis in a case of congenital nystagmus.

METHODS

A 19-year-old male with congenital horizontal nystagmus presented to the clinic after smoking 10 mg of cannabis. He claimed that the main reason for smoking cannabis was to improve his vision. At the next clinic appointment, he had not smoked cannabis for 3weeks. Full ophthalmologic examination and eye movement recordings were performed at each visit.

RESULTS

Visual acuity improved by 3 logMar lines in the left eye and by 2 logMar lines in the right eye after smoking cannabis. The nystagmus intensities were reduced by 30% in primary position and 44%, 11%, 10% and 40% at 20-degree eccentricity to the right, left, elevation and depression, respectively, after smoking cannabis.

CONCLUSION

Cannabis may be beneficial in the treatment of congenital idiopathic nystagmus (CIN). Further research to clarify the safety and efficacy of cannabis in patients with CIN, administered for example by capsules or spray, would be important.

Authors+Show Affiliations

Ophthalmology Group, University of Leicester, UK.No affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info available

Pub Type(s)

Case Reports
Journal Article
Research Support, Non-U.S. Gov't

Language

eng

PubMed ID

18306120

Citation

Pradeep, A, et al. "Reduction of Congenital Nystagmus in a Patient After Smoking Cannabis." Strabismus, vol. 16, no. 1, 2008, pp. 29-32.
Pradeep A, Thomas S, Roberts EO, et al. Reduction of congenital nystagmus in a patient after smoking cannabis. Strabismus. 2008;16(1):29-32.
Pradeep, A., Thomas, S., Roberts, E. O., Proudlock, F. A., & Gottlob, I. (2008). Reduction of congenital nystagmus in a patient after smoking cannabis. Strabismus, 16(1), pp. 29-32. doi:10.1080/09273970701821063.
Pradeep A, et al. Reduction of Congenital Nystagmus in a Patient After Smoking Cannabis. Strabismus. 2008;16(1):29-32. PubMed PMID: 18306120.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Reduction of congenital nystagmus in a patient after smoking cannabis. AU - Pradeep,A, AU - Thomas,S, AU - Roberts,E O, AU - Proudlock,F A, AU - Gottlob,I, PY - 2008/2/29/pubmed PY - 2008/6/25/medline PY - 2008/2/29/entrez SP - 29 EP - 32 JF - Strabismus JO - Strabismus VL - 16 IS - 1 N2 - INTRODUCTION: Smoking cannabis has been described to reduce acquired pendular nystagmus in MS, but its effect on congenital nystagmus is not known. PURPOSE: To report the effect of smoking cannabis in a case of congenital nystagmus. METHODS: A 19-year-old male with congenital horizontal nystagmus presented to the clinic after smoking 10 mg of cannabis. He claimed that the main reason for smoking cannabis was to improve his vision. At the next clinic appointment, he had not smoked cannabis for 3weeks. Full ophthalmologic examination and eye movement recordings were performed at each visit. RESULTS: Visual acuity improved by 3 logMar lines in the left eye and by 2 logMar lines in the right eye after smoking cannabis. The nystagmus intensities were reduced by 30% in primary position and 44%, 11%, 10% and 40% at 20-degree eccentricity to the right, left, elevation and depression, respectively, after smoking cannabis. CONCLUSION: Cannabis may be beneficial in the treatment of congenital idiopathic nystagmus (CIN). Further research to clarify the safety and efficacy of cannabis in patients with CIN, administered for example by capsules or spray, would be important. SN - 0927-3972 UR - https://www.unboundmedicine.com/medline/citation/18306120/abstract/Reduction_of_Congenital_Nystagmus_in_a_Patient_after_Smoking_Cannabis_ L2 - http://www.tandfonline.com/doi/full/10.1080/09273970701821063 DB - PRIME DP - Unbound Medicine ER -