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Motion detection deficits in infantile esotropia without nystagmus.
| Content Provider | Semantic Scholar |
|---|---|
| Author | Shallo-Hoffmann, Josephine Faldon, Mary Catherine Hague, S. J. Riordan-Eva, P. Fells, Peter Gresty, Michael Andrew |
| Copyright Year | 1997 |
| Abstract | PURPOSE To investigate whether adults with infantile strabismus but without latent nystagmus have abnormalities of horizontal motion detection. METHODS Eleven adult subjects with infantile esotropia but without latent nystagmus and 15 control subjects were required to detect the onset of motion and drift direction of a sinusoidal, spatial frequency grating that moved with linearly increasing velocity. The grating was presented monocularly in paracentral vision at an eccentricity of 16.5 degrees with a field size of 18 degrees. The contrast of the grating was just above contrast threshold for visibility. RESULTS The mean velocity threshold for detection of motion was raised significantly in the patient group compared with the control group. Nine of the 11 subjects with infantile esotropia demonstrated directional asymmetry for the detection of motion. Thresholds were elevated more often when the grating was moving nasally in the squinting eye and temporally in the nonsquinting eye, and raised thresholds were more prevalent in the squinting eye. CONCLUSIONS The findings indicate that in infantile esotropia, the presence of motion perception deficits are not always associated with the development of latent nystagmus. The predominance of nasally directed motion deficits in the squinting eye and temporally directed motion deficits in the nonsquinting eye was unexpected and may have been caused by abnormal development of cortical motion processing. |
| File Format | PDF HTM / HTML |
| PubMed reference number | 9008646 |
| Journal | Medline |
| Volume Number | 38 |
| Issue Number | 1 |
| Alternate Webpage(s) | https://iovs.arvojournals.org/pdfaccess.ashx?url=/data/journals/iovs/933195/219.pdf |
| Journal | Investigative ophthalmology & visual science |
| Language | English |
| Access Restriction | Open |
| Content Type | Text |
| Resource Type | Article |
