1 Phoria at distance and near, positive and negative relative accommodation(NRA/PRA), accommodative convergence and accommodation response were measured. Results Response AC/A ratio of P. M.

2 Aim To study the effect of wearing progressive multi-focal spectacles on phoria in the teenager nearsighted.

3 Methods Several tests including primary eye care, tear break time (BUT), refractive analysis, facility of accommodation, phoria and FCC were done on 121 patients respectively.

4 Results:Binocular abnormality was found to be correlated with the absolute value of fixation disparity and associated phoria.

5 Conclusion Wearing progressive multi-focal spectacles will not increase the phoria degree in the teenager nearsighted.