AIM: To examine a new performance test for detecting eye dominance by testing and re-testing with two different methods of the same subjects for comparing and discussing the reliabilities of these tests. METHODS: A total of 179 university students (mean± SD: 19.37± 1.62 years) were voluntarily participate in this survey consisting of 110 females (61.5%) and 69 males (38.5%). Eye dominances were determined by two different methods which were named McManus and a Gündoğan tests. The reliability of the survey was examined using a test-retest method. RESULTS: Without sex difference, right eyes were found dominant in 128 (71.5 %) participants by McManus test. The same subjects were re-tested by Gündo an method, the right eye dominance were found in 110 (61.5%) subjects. The results of these two methods were related significantly by Fisher exact test(P<0.01), with an agreement score( k=0.256, P<0.001). In females, the right eye dominance was found in 74 (67.3%) and left eye was found in 36 (32.7%) by McManus test. When the same subjects were re-tested by G ndo an method, the right eye dominance was found in 62 (56.4%) and the left eye dominance was found in 48 (43.6%) subjects.McManus and Gündoğan methods results for females were related significantly by Fisher exact test ( P<0.05), with a weak agreement score ( k=0.239, P<0.01). In males, the right/left eye dominances were found respectively 54 (78.3%), 15(21.7%) by McManus test as they were found 48 (69.6 %), 21 (30.4 %) in the same participants when they were re-tested by Gündoğan method.χ ² test and Fisher exact test were used for the analysis of categorical data. The agreement between different methods was analyzed with Kappa statistics. Comparison of proportions was made by two proportions test. value less than 0.05 was considered as significant. CONCLUSION: Without gender difference and also in both females and males marked right eye dominance is observed. The right eye dominance is considering functional laterality may due to the dominance of left hemisphere instead of right hemisphere. It is an important topic for future research in laterality, and it may well become an important model system for future research."