Identifier |
19860224_nanos_smoothpursuitsympos_04 |
Title |
Oculomotor Abnormalities in Albinism |
Creator |
Jonathan D. Wirtschafter, MD |
Affiliation |
University of Minnesota, Minneapolis, MN |
Subject |
Oculomotor Abnormalities; Albinism; Anatomic Abnormalities; Sensory System; Foveal Hypoplasia; Retinal Decussation Line |
Description |
Although there are anatomic abnormalities in the sensory system (foveal hypoplasia and misrouting of retinofugal projections, the abnormal ocular movements observed (spontaneous unidirectional and bidirectional jerk or pendular nystagmus and absent true horizontal OKN) are not simply explained (Table 1). Foveal hypoplasia leading to degraded sensorimotor feedback does not explain the vertical stability nor the presence of nystagmus at or soon after birth particularly since the anatomic development of the fovea is not normally completed until 4 months after birth. Moreover foveal hypoplasia is an obligate feature of albinism while nystagmus is not. The alternative hypothesis is that optic pathway abnormalities result in directional errors of senorimotor feedback. The problem with this explanation is the need to explain the other forms of congenital nystagmus not associated with abnormal retinal projections. |
Date |
1986-02-24 |
Language |
eng |
Format |
application/pdf |
Type |
Text |
Source |
1986 North American Neuro-Ophthalmology Society Annual Meeting |
Relation is Part of |
Smooth Pursuit Symposium |
Collection |
Neuro-ophthalmology Virtual Education Library: NOVEL http://NOVEL.utah.edu |
Publisher |
Spencer S. Eccles Health Sciences Library, University of Utah |
Holding Institution |
North American Neuro-Ophthalmology Association. NANOS Executive Office 5841 Cedar Lake Road, Suite 204, Minneapolis, MN 55416 |
Rights Management |
Copyright 1986. For further information regarding the rights to this collection, please visit: https://NOVEL.utah.edu/about/copyright |
ARK |
ark:/87278/s6ck1m5v |
Context URL |
The NANOS Annual Meeting Neuro-Ophthalmology Collection: https://novel.utah.edu/collection/NAM/toc/ |
Setname |
ehsl_novel_nam |
ID |
183571 |
Reference URL |
https://collections.lib.utah.edu/ark:/87278/s6ck1m5v |