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Retrospective study of recession of four horizontal rectus muscle in periodic alternating nystagmus.
- Source :
-
Clinical Ophthalmology . 2014, Vol. 8, p2523-2528. 6p. - Publication Year :
- 2014
-
Abstract
- Purpose: Periodic alternating nystagmus (PAN) is a spontaneous horizontal nystagmus observed in disorders of the central nervous system. Patients with congenital PAN complain of oscillating vision at high rates. Medication is the first-choice treatment for PAN; however, clinicians still seek better therapy. The aim of this study was to evaluate outcomes of recession of four horizontal rectus muscle (R-FHR) in patients with congenital PAN. Patients and methods: This study reports a retrospective case series of ten patients (seven males and three females; mean age 24.4±10.9) with congenital PAN who underwent R-FHR between 2007 and 2012, which was performed by the same surgeon at the Hyogo College of Medicine. Patients were evaluated for complications, recession amount, deviation angle, eye movements including a nystagmus amplitude, and visual acuity during pre- and post-operative periods. Results: Pre-operatively, patients complained of oscillating vision, abnormal head posture, esotropia, and congenital superior oblique palsy. Post-operatively, changes from the previous observations of nystagmus amplitudes and abnormal head posture demonstrated a complete reversal in all patients. In addition, visual acuity determined with a Snellen chart improved in two patients. However, esotropia occurred in three patients who underwent additional strabismus surgery 2 days after R-FHR. R-FHR was particularly effective in eight patients who preoperatively had periodic oscillating vision with a regular pattern of periodic nystagmus. Conclusion: We demonstrated that ten patients with congenital PAN had improved vision following R-FHR, indicating that R-FHR was an effective procedure, especially in patients suffering PAN with periodic oscillating vision. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 11775467
- Volume :
- 8
- Database :
- Academic Search Index
- Journal :
- Clinical Ophthalmology
- Publication Type :
- Academic Journal
- Accession number :
- 100218384
- Full Text :
- https://doi.org/10.2147/OPTH.S72349