Retrospective study of recession of four horizontal rectus muscle in periodic alternating nystagmus
Osamu Mimura,1 Hiroto Ishikawa,1,2 Naoki Kimura,1 Akiko Kimura,1 Cesar V Borlongan2 1Department of Ophthalmology, Hyogo College of Medicine, Nishinomiya, Hyogo, Japan; 2Department of Neurosurgery and Brain Repair, University of South Florida, Tampa, FL, USA Purpose: Periodic alternating nystagmus...
Guardado en:
| Autores principales: | , , , , |
|---|---|
| Formato: | article |
| Lenguaje: | EN |
| Publicado: |
Dove Medical Press
2014
|
| Materias: | |
| Acceso en línea: | https://doaj.org/article/e1c18dc3f6234a4d8613611fdc4f2205 |
| Etiquetas: |
Agregar Etiqueta
Sin Etiquetas, Sea el primero en etiquetar este registro!
|
| id |
oai:doaj.org-article:e1c18dc3f6234a4d8613611fdc4f2205 |
|---|---|
| record_format |
dspace |
| spelling |
oai:doaj.org-article:e1c18dc3f6234a4d8613611fdc4f22052021-12-02T05:46:32ZRetrospective study of recession of four horizontal rectus muscle in periodic alternating nystagmus1177-5483https://doaj.org/article/e1c18dc3f6234a4d8613611fdc4f22052014-12-01T00:00:00Zhttp://www.dovepress.com/retrospective-study-of-recession-of-four-horizontal-rectus-muscle-in-p-peer-reviewed-article-OPTHhttps://doaj.org/toc/1177-5483 Osamu Mimura,1 Hiroto Ishikawa,1,2 Naoki Kimura,1 Akiko Kimura,1 Cesar V Borlongan2 1Department of Ophthalmology, Hyogo College of Medicine, Nishinomiya, Hyogo, Japan; 2Department of Neurosurgery and Brain Repair, University of South Florida, Tampa, FL, USA 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 pre-operatively 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. Keywords: congenital nystagmus, null point nystagmus, strabismus surgery, ocular torticollis, oscillating vision, electro-oculogramMimura OIshikawa HKimura NKimura ABorlongan CVDove Medical PressarticleOphthalmologyRE1-994ENClinical Ophthalmology, Vol 2014, Iss default, Pp 2523-2528 (2014) |
| institution |
DOAJ |
| collection |
DOAJ |
| language |
EN |
| topic |
Ophthalmology RE1-994 |
| spellingShingle |
Ophthalmology RE1-994 Mimura O Ishikawa H Kimura N Kimura A Borlongan CV Retrospective study of recession of four horizontal rectus muscle in periodic alternating nystagmus |
| description |
Osamu Mimura,1 Hiroto Ishikawa,1,2 Naoki Kimura,1 Akiko Kimura,1 Cesar V Borlongan2 1Department of Ophthalmology, Hyogo College of Medicine, Nishinomiya, Hyogo, Japan; 2Department of Neurosurgery and Brain Repair, University of South Florida, Tampa, FL, USA 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 pre-operatively 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. Keywords: congenital nystagmus, null point nystagmus, strabismus surgery, ocular torticollis, oscillating vision, electro-oculogram |
| format |
article |
| author |
Mimura O Ishikawa H Kimura N Kimura A Borlongan CV |
| author_facet |
Mimura O Ishikawa H Kimura N Kimura A Borlongan CV |
| author_sort |
Mimura O |
| title |
Retrospective study of recession of four horizontal rectus muscle in periodic alternating nystagmus |
| title_short |
Retrospective study of recession of four horizontal rectus muscle in periodic alternating nystagmus |
| title_full |
Retrospective study of recession of four horizontal rectus muscle in periodic alternating nystagmus |
| title_fullStr |
Retrospective study of recession of four horizontal rectus muscle in periodic alternating nystagmus |
| title_full_unstemmed |
Retrospective study of recession of four horizontal rectus muscle in periodic alternating nystagmus |
| title_sort |
retrospective study of recession of four horizontal rectus muscle in periodic alternating nystagmus |
| publisher |
Dove Medical Press |
| publishDate |
2014 |
| url |
https://doaj.org/article/e1c18dc3f6234a4d8613611fdc4f2205 |
| work_keys_str_mv |
AT mimurao retrospectivestudyofrecessionoffourhorizontalrectusmuscleinperiodicalternatingnystagmus AT ishikawah retrospectivestudyofrecessionoffourhorizontalrectusmuscleinperiodicalternatingnystagmus AT kimuran retrospectivestudyofrecessionoffourhorizontalrectusmuscleinperiodicalternatingnystagmus AT kimuraa retrospectivestudyofrecessionoffourhorizontalrectusmuscleinperiodicalternatingnystagmus AT borlongancv retrospectivestudyofrecessionoffourhorizontalrectusmuscleinperiodicalternatingnystagmus |
| _version_ |
1718400263804420096 |