To have a fine understand the refractive error eye of Korean adult male, This study was researched visual acuity test using objuctive and subjective methods. The results are as follows: 1. The eye types were 93.3% positive for myopia, 5.4% for emmetropia, and 1.7 forhyperopia, respectively. 2. The refractive error eye was positive for compound myoptic astigmatism for a percntage of 62.6%, simple myopia(32.4%), simple myoptic astigmatism(1.6%), simple hyperopia(l.4%) simple hyperopia astigmatism(0.5%), and mixed astigmatism(1.6%). 3. The axis of astigmatism was 59.7% for regular astigmatism, 25.3% for oblique astigmatism, and 15% for reverse regular astigmatism, respectively. 4. on the total myoptic spheric power, the -2.00 <spherical equivalent <-6.00 diopter was 51.6%, the -0.50 <spherical equivalent <-2.00 diopter was 41.8%, and anything over the 6.00 diopter was 6.6%. 5. The total hyperopia spheric power was 75% anything under the 2.00 diopter, and 25% for anything over the 2.00 diopter. 6. On the astigmatic power, the -0.50 <cylinder <-1.00 diopter was 79.3%, the -1.00 <cylinder<-2.00 diopter was 17.4%, and anything over the -2.00 cylinder diopter was 3.3%.