However, a small magnitude or intermittent strabismus can easily be missed upon casual observation. In any case, an eye care professional can conduct various tests, such as cover testing, to determine the full extent of the strabismus. Symptoms of strabismus include double vision and/or eye strain. To avoid double vision, the brain may adapt by ignoring one eye. In this case, often no noticeable symptoms are seen other than a minor loss of depth perception.
About trade unions. Trade unions are groups of employees who join together to maintain and improve their conditions of employment. The typical activities of a trade union include providing assistance and services to their members, collectively bargaining for better pay and conditions for all workers, working to improve the quality of public services, political campaigning and industrial action.
Industrial Union Law and Legal Definition. An industrial union is a union with a membership of workers in a particular industry, regardless of the particular skills the worker exercises. Some of the industrial unions of the AFL_CIO include: 1. Bakery, Confectionery, Tobacco Workers and Grain Millers (BCTGM) 2. Boilermakers (IBB) 3. Electrical Workers (IBEW) 4.