Clinical measurements of normative subjective cyclotorsion and cyclofusion in a healthy adult population.
cyclodeviation
cyclofusion
cyclotorsion
excyclotorsion
single maddox rod
standard reference range
synoptophore
Journal
Acta ophthalmologica
ISSN: 1755-3768
Titre abrégé: Acta Ophthalmol
Pays: England
ID NLM: 101468102
Informations de publication
Date de publication:
Mar 2020
Mar 2020
Historique:
received:
17
04
2019
accepted:
03
07
2019
pubmed:
29
7
2019
medline:
23
1
2021
entrez:
29
7
2019
Statut:
ppublish
Résumé
To investigate normative subjective cyclotorsion values and cyclofusion ranges in a healthy adult population. A cross-sectional investigation was performed in 120 healthy, non-strabismic adults, 60 men and 60 women in the age range of 18-69 years. All subjects were assessed for cyclotorsion using the synoptophore and the single Maddox rod (SMR) methods. Cyclofusion was investigated with the synoptophore in 60 of the subjects. All age groups showed low values of subjective torsion, mainly excyclotorsion with mean values of -1 degree for both methods. Reference ranges of cyclotorsion were between -0.7 and -1.5 degrees for the SMR method and between -0.7 and -1.4 degrees using the synoptophore method. There were no significant differences between gender (p = 0.48), but the effect of age was significant for both methods (p = 0.026) demonstrating a slight increase in excyclotorsion with age. Cyclofusion showed a total mean amplitude of 16 degrees, the fusion range was +7 degrees of incyclotorsion to -9 degrees of excyclotorsion. Subjective reference ranges for cyclotorsion and cyclofusion reveal that low values of torsion are to be expected upon clinical investigation in non-strabismic adult individuals. Values outside of the reference range may be indicators of possible binocular abnormalities or physiological variations. The cyclotorsional measurements and prevalence in this adult population group can be regarded as normative data in clinical settings.
Types de publication
Journal Article
Langues
eng
Sous-ensembles de citation
IM
Pagination
177-181Subventions
Organisme : De Blindas Vänner
Organisme : FoU VGR fond
Organisme : Iris stipendiet
Organisme : Karin Sandqvist stiftelse
Informations de copyright
© 2019 Acta Ophthalmologica Scandinavica Foundation. Published by John Wiley & Sons Ltd.
Références
Almog Y, Nemet A & Ton Y (2014): Measurement of ocular cyclotorsion in superior oblique palsy using a single Maddox rod. J Neuroophthalmol 34: 362-365.
Balliet R & Nakayama K (1978): Training of voluntary torsion. Invest Ophthalmol Vis Sci 17: 303-314.
Bixenman WW & von Noorden GK (1982): Apparent foveal displacement in normal subjects and in cyclotropia. Ophthalmology 89: 58-62.
Brandt T & Dieterich M (1992): Cyclorotation of the eyes and subjective visual vertical in vestibular brain stem lesions. Ann N Y Acad Sci 656: 537-549.
Deng H, Irsch K, Gutmark R, Phamonvaechavan P, Foo F-Y, Anwar DS & Guyton DL (2013): Fusion can mask the relationships between fundus torsion, oblique muscle overaction/underaction, and A- and V-pattern strabismus. J AAPOS 17: 177.
Flodin S, Karlsson P & Gronlund MA (2016): Cyclotorsion measured in a patient population using three different methods: a comparative study. Strabismus 24: 28-36.
Fray KJ & Phillips PH (2003): Strabismus with a twist: pre- and postoperative torsion. Am Orthopt J 53: 12-19.
Georgievski Z, Sleep M & Koklanis K (2007): Simulated torsional disparity disrupts horizontal fusion and stereopsis. J AAPOS 11: 120-124.
Graf EW, Maxwell JS & Schor CM (2002): Changes in cyclotorsion and vertical eye alignment during prolonged monocular occlusion. Vision Res 42: 1185-1194.
Guyton DL (1983): Clinical assessment of ocular torsion. Am Orthopt J, 33: 7-15.
Guyton DL (1988): Ocular torsion: sensorimotor principles. Graefes Arch Clin Exp Ophthalmol 226: 241-245.
Guyton DL (2008): Ocular torsion reveals the mechanisms of cyclovertical strabismus - the weisenfeld lecture. Invest Ophthalmol Vis Sci 49: 847-857.
Hewitt RS (1951): Torsional eye movements. Am J Ophthalmol 34: 253-260.
Huma T & Usman W (2013): The need to establish reference ranges. J Public Health Biol Sci 2: 188-190.
Katayev AC, Balciza C & Seccombe DW (2010): Establishing reference intervals for clinical laboratory test results: is there a better way?. Am J Clin Pathol 133: 180-186.
Kraft SP, O'Reilly C, Quigley PL, Allan K & Eustis HS (1993): Cyclotorsion in unilateral and bilateral superior oblique paresis. J Pediatr Ophthalmol Strabismus 30: 361-367.
Kushner BJ (1992): Unexpected cyclotropia simulating disruption of fusion. Arch Ophthalmol 110: 1415-1418.
Kushner BJ & Hariharan L (2009): Observations about objective and subjective ocular torsion. Ophthalmology 116: 2001-2010.
Liebermann L, Leske DA, Hatt SR & Holmes JM (2018): Test-retest variability of cyclodeviations measured using the double Maddox rod test. J AAPOS 22: 146-148.
Marsh JD, Durkin MW, Hack AE, Markowitz BB & Cheeseman EW (2014): Accuracy of double Maddox rod with induced hypertropia in normal subjects. Am Orthopt J 64: 76-80.
Miller AM (2015): Torsional diplopia. Am Orthopt J 65: 21-25.
Pansell T, Ygge J & Schworm HD (2003): Conjugacy of torsional eye movements in response to a head tilt paradigm. Invest Ophthalmol Vis Sci 44: 2557-2564.
Phillips PH & Hunter DG (1999): Evaluation of ocular torsion and principles of management. In: Rosenbaum AL & Santiago AP (ed.). Clinical strabismus management: principles and surgical techniques. Philadelphia: W. B. Saunders 452-472.
Pratt-Johnson JA & Tillson G (1987): The investigation and management of torsion preventing fusion in bilateral superior oblique palsies. J Pediatr Ophthalmol Strabismus 24: 145-150.
Sharma P, Prasad K & Khokhar S (1999): Cyclofusion in normal and superior oblique palsy subjects. J Pediatr Ophthalmol Strabismus, 36: 264-270.
Sharma P, Thanikachalam S, Kedar S & Bhola R (2008): Evaluation of subjective and objective cyclodeviation following oblique muscle weakening procedure. Indian J Ophthalmol 56: 39-43.
Van Rijn LJ, Van Der Steen J & Collewijn H (1994): Instability of ocular torsion during fixation: cyclovergence is more stable than cycloversion. Vision Res 34: 1077-1087.
Von Noorden GK (1996): Cyclovertical deviations. In: Von Noorden GK & Campos EC (ed.). Binocular vision and ocular motility: theory and management of strabismus. St. Louis, MO: Mosby 377-395.
Wright KW (2006): The ocular motor examination. In: Wright KW, Spiegel PH & Thompson L (ed.). Handbook of pediatric strabismus and amblyopia. New York: Springer 165-173.