الفهرس 
Relationship between refraction visual errors and cervical spine angles and range of motion
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Abstract
Background: Myopia is one of the common refraction visual errors (RVE) that produces musceloskletal complains , such as stiffness, fatigue and muscular pain in the neck which in turn may affect cervical curvature and range of motion. Aim of the study: To investigate the relationship between refractive visual errors subjects and cervical curvature and cervical range of motion. Participants: Fifty participants divided into two groups 15-30 years old from KASR AL AINI hospital in radiology department from employees and students in October 2016. They assigned in two equal groups refractive m yopic and normal sighted. Methods: Active cervical range of motion (CROM) was assessed by using O.B goniometry, cervical angles (OC-C2, C1-C2, C2-C7) were measures by using corel draw program in x-ray. Results: Comparison between groups revealed no significant different in OC-C1 and a significant different in C1-C2 and C2-C7, additionally there was a significant difference in flexion , extension , Rt and Lt rotation (P= 0.007, 0.01, 0.0001, 0.001) between groups respectively, there was no significant correlation between right and left eye and cervical angles and range of ROM