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Query: UMLS:C0028738 (nystagmus)
 7,431 document(s) hit in 31,850,051 MEDLINE articles (0.00 seconds)

When visual acuity for distance is tested correct recognition of (as an example) 6 of 10 Landolt-rings is required. On the other hand, it is very difficult to define visual acuity exactly with reading cards, the result will also depend on the patient's reading ability. The new near vision test consists of 10 syllables with two letters being calibrated according to DIN 58,220 (part 2 A1-correlation of optotypes) by Rassow et al. [11]. The patient is required to recognize 6 syllables out of 10 correctly. To test crowding phenomena the syllables are connected by a letterlike symbol. In 18 patients suffering from squint amblyopia and in 18 patients suffering from anisometropic amblyopia visual acuity with Oculus reading cards and with the new near vision test was identical. The crowding syllables test yielded a visual acuity comparable to that determined with the C test according to Haase/Hohmann [6]. The new near vision test makes it possible to examine visual acuity for reading with syllables as exactly as for single optotypes using Landolt-rings. In both cases, 6 of 10 answers have to be correct. Additionally, reading time for one syllable can be restricted to one second when patients with nystagmus are being tested.
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PMID:[A new syllable text for evaluating near vision]. 771 78