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document
The logMAR Kay picture test and the logMAR acuity test : a comparative study . PURPOSE To compare the level of visual acuity with crowded and uncrowded versions of the logMAR acuity test and the Kay picture test in amblyopia . METHODS A prospective study was carried out on 51 participants with amblyopia ( strabismic n=17 ; anisometropic n=10 ; combined n=24 ) , mean age 10 years 8 months . The amblyopia was defined as severe/moderate ( < 0.250 logMAR ) , n=41 or mild ( > or = 0.250 logMAR ) , n=10 . Visual acuity was assessed uniocularly using the crowded and uncrowded logMAR acuity tests and the logMAR crowded and uncrowded Kay picture tests in random orders . RESULTS The mean visual acuity outcome using the logMAR crowded Kay picture test ( 0.343+/-0.150 ) was comparable ( P=0.084 ) with the mean outcome using the crowded logMAR acuity test ( 0.402+/-0.188 ) . However , the mean acuity difference between these two tests in the subgroup with severe/moderate amblyopia ( 0.074+/-0.036 ) was statistically significant ( P=0.0382 ) . The uncrowded logMAR acuity test significantly overestimated visual acuity when compared with the logMAR crowded Kay picture test ( P < 0.005 ) by a mean of 0.088+/-0.008 . CONCLUSION The logMAR crowded Kay picture test is a useful tool in clinical practice . The test design takes the crowding phenomenon into account . It provides visual acuity measures more comparable with the gold standard crowded logMAR acuity test than the uncrowded logMAR acuity test . However , the outcomes in poorer acuities should still be viewed with caution .
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Intervention_Physical
logMAR Kay picture test
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Intervention_Physical
logMAR acuity test
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Intervention_Physical
crowded and uncrowded versions
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Intervention_Physical
logMAR acuity test
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Intervention_Physical
Kay picture test
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Intervention_Physical
crowded and uncrowded logMAR acuity tests
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Intervention_Physical
logMAR crowded and uncrowded Kay picture tests
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Intervention_Physical
logMAR crowded Kay picture test
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Intervention_Physical
crowded logMAR acuity test
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Intervention_Physical
uncrowded logMAR acuity test
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Intervention_Physical
logMAR crowded Kay picture test
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Intervention_Physical
logMAR crowded Kay picture test
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Intervention_Physical
crowded logMAR acuity test
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Outcome_Physical
visual acuity
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Outcome_Physical
Visual acuity
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Outcome_Physical
mean visual acuity outcome
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Outcome_Physical
mean acuity difference
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Outcome_Physical
logMAR acuity
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Outcome_Physical
visual acuity
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Outcome_Physical
logMAR crowded Kay picture
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Outcome_Physical
visual acuity