Chart
Survey of visual acuity of drivers
Data are presented at 25 sites using a British Standard test chart rather than a vision screening device. Assuming that the Department of Transport number plate test is equivalent to an acuity standard of between 6/12 and 6/9, it is estimated that between 1 percent and 3 percent of all drivers would fail the test at any given moment. Acuity was found to decline with age for drivers aged over 40 years. 5 percent and 10 percent respectively of drivers aged 65 over failed to meet the criteria of 6/12 and 6/9. A quater of all drivers tested were actually wearing spectacles or contact lenses prior to driving up to the testing station; only 15 of these drivers were wearing contact lenses. Qestionaire responses indicated that 64 percent of all drivers claimed to have had some form of eye test within the previous 3 years. The effects on drivers' acuity of type and use of optical prescription, and of length of time since last eye examination, are reported
Ketersediaan
Informasi Detail
- Judul Seri
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Trrl Lr 945
- No. Panggil
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625.7(047.31) Dav s
- Penerbit
- : TRRL., 1980
- Deskripsi Fisik
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21 p.; fig.; tab.
- Bahasa
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Indonesia
- ISBN/ISSN
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- Klasifikasi
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625.7(047.31)
- Tipe Isi
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- Tipe Media
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- Tipe Pembawa
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- Edisi
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- Subjek
- Info Detail Spesifik
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- Pernyataan Tanggungjawab
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Versi lain/terkait
Tidak tersedia versi lain
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