ISSN: 1300-0365
Dil: Türkçe
|
|
|
Etiology And Clinical Characteristics Of Congenital Nystagmus
Nurgül YILMAZ*, Huban ATİLLA**, Necile ERKAM***
* Arş.Gör.Dr., Ankara Üniversitesi Tıp Fakültesi Göz Hastalıkları AD,** Doç.Dr., Ankara Üniversitesi Tıp Fakültesi Göz Hastalıkları AD,***Prof.Dr., Ankara Üniversitesi Tıp Fakültesi Göz Hastalıkları AD, ANKARA
Objective: To investigate the etiology and clinical characteristics of congenital nystagmus
Materıal and Methods: Between January 1999 and April 2002, 123 patients who were seen in the pediatric ophthalmology and strabismus unit of our clinic with the diagnosis of congenital nystagmus were evaluated retrospectively.
Results: The mean age of the patients was 122±128 (5-600) months and the mean follow-up time was 28.2423.92 (2-112) months. Of the 123 congenital nystagmus patients, the diagnosis were congenital sensory defect nystagmus in 88 (71.6%) patients, congenital motor nystagmus in 18 (14.6%) patients and neurological nystagmus in 12 (9.7%) patients and 5 (4.1%) patients were still under investigation. In the congenital sensory defect nystagmus group, the three most common diagnosis were albinism (39/123, 31.8%), dyschromatopsia (21/123, 17%) and congenital malformations of the optic nerve (13/123, 10.5%), respectively. More frequent findings associated with neurological nystagmus were cerebral palsy (6/123, 4.9%) and mental motor retardation (2/123, 1.6%). The mean visual acuity was 0.15 in congenital sensory defect nystagmus, 0.61 in congenital motor nystagmus and 0.33 in neurological nystagmus. The mean visual acuity of the patients with congenital sensory defect nystagmus was statistically significantly lower than the mean visual acuity of patients with congenital motor nystagmus (p0.0001). The mean stereoacuity in patients with congenital motor and congenital sensory defect nystagmus were 215.56±246.94 and 840±907.74 arc seconds, respectively and the difference was statistically significant (p<0.01). The mean strabismic deviation in patients with congenital sensory defect nystagmus and neurological nystagmus was statistically significantly higher than in patients with congenital motor nystagmus (p0.0001).
Conclusion: 71.6% of congenital nystagmus is congenital sensory defect nystagmus. The mean visual acuity and stereoacuity in congenital sensory defect nystagmus are lower than the visual acuity and stereoacuity in congenital motor nystagmus, and association with strabismus is higher in sensory defect nystagmus than the congenital motor nystagmus.Keywords: Congenital nystagmus, Congenital sensory defectnystagmus, Congenital motor nystagmus,Neurological nystagmusTürkiye Klinikleri Oftalmoloji 2003, 12:215-221
|
|
|
|
|
