[A chart for low visual acuities: experience in a center for low vision and rehabilitation]
| Autor: | BONAVOLONTA', PAOLA, Travade I, FORTE, RAIMONDO, Rebeyrotte I, Adenis JP, Robert PY |
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| Přispěvatelé: | Bonavolonta', Paola, Travade, I, Forte, Raimondo, Rebeyrotte, I, Adenis, Jp, Robert, Py |
| Jazyk: | francouzština |
| Rok vydání: | 2009 |
| Předmět: |
Rehabilitation Center
Adult Aged 80 and over Male Audiovisual Aid Audiovisual Aids Vision Tests Rehabilitation Visual Acuity Vision Low Visual impairment Middle Aged ETDRS Fixation Rehabilitation Centers Severity of Illness Index Causality Prospective Studie Vision Test Humans Female France Prospective Studies Human Aged |
| Zdroj: | Journal francais d'ophtalmologie. 33(6) |
| ISSN: | 1773-0597 |
| Popis: | Commonly used visual test charts can be used to measure 1-m minimal visual acuities (VA) of 20/1000 (Snellen chart) and 1/40 (Early Treatment of Diabetic Retinopathy Study [ETDRS] charts).In a prospective study, we considered all patients who visited in a Low Vision and Rehabilitation Center between September 2007 and January 2009. Distance best corrected VA (DBCVA) was evaluated with the ETDRS LogMAR 4-m chart and a customized ETDRS 1-m chart, while near best corrected VA (NBCVA) was measured with the LogMAR conversion of the Parinaud 30-cm chart.One hundred and sixteen eyes (58 patients; 34 males and 24 females with a mean age of 69+/-19.4 [19-94] years) were included in the study. Mean DBCVA was 0.97+/-0.58 LogMAR, mean NBCVA was 0.28+/-0.2 LogMAR. In 52 eyes (44.8%), distance VA was less than 1/20 (DBCVA 1.86+/-0.5 LogMAR, NBCVA 0.08+/-0.05 LogMAR). Among the 58 best seeing eyes, DBCVA was 0.87+/-0.6 LogMAR, while NBCVA was 0.34+/-0.2 LogMAR. In 18 of 58 cases (31%), distance VA was less than 1/20 (DBCVA 1.86+/-0.59 and NBCVA 1.51+/-0.42).In a center for low vision and visual rehabilitation, a customized chart was necessary in 31% of cases for evaluation of VA. A fine measurement of low VA is useful for baseline assessment and for evaluation of changes during rehabilitation. |
| Databáze: | OpenAIRE |
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