Der F-L-Test zur Feststellung eines alternierenden Zentralskotoms
| Autor: | Doris Safra |
|---|---|
| Rok vydání: | 1995 |
| Předmět: | |
| Zdroj: | Klinische Monatsblätter für Augenheilkunde. 206:365-366 |
| ISSN: | 1439-3999 0023-2165 |
| DOI: | 10.1055/s-2008-1035463 |
| Popis: | Background Based on their experiences several authors consider an alternating central scotoma as the main reason for reading difficulties due to dyslexia. Methods Searching for a simple and reliable method for determination of an alternating central scotoma we used a pair of synoptophore fusion images, in the center of which we added the letter F respectively L as central control signs. A spontaneously perceived and persisting E means a perfect and stable orthophoria. A persisting F or L with fusion of the images means a one sided central scotoma. Alternation of F and L with fusion of the images means an alternating central scotoma. Results By examining normal readers, untreated asthenopic and untreated dyslexic patients, we found mostly rapid alternation of F and L in the latter two groups, whereas most of the normal readers saw F, L and E alternating at longer intervals. Conclusions Thus undisturbed reading seems not to demand perfect orthophoria. On the other hand a rapidly alternating central scotoma may be considered as an important factor causing reading difficulties. |
| Databáze: | OpenAIRE |
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