2. Employers are required by law to provide, or meet the cost of, eyecare tests and/or corrective glasses for VDU use for their employees.
I think the key is in the "and/or bit".
Take the and out and you get 2. Employers are required by law to provide, or meet the cost of, eyecare tests or corrective glasses for VDU use for their employees.
So it means the employer can either pay for the tests ot the glasses. Obviously they are only paying for the cheaper test.