At Designed Eyes we have the experience and technology to produce prescription lenses where prisms have been prescribed by an ophthalmologist, optometrist or orthoptist.
Some large chain stores find it difficult to make lenses in higher prism prescriptions, but we can usually offer a solution by making sure that the frame and lens choice are correct for the task.
Prismatic lenses are required for some people because their eyes do not co-ordinate properly. Either their eyes tend to drift in or out, or one eye turns up or down. This will result in blurred or double vision. It very often afflicts elderly patients and although severe cases can be surgically resolved, glasses are usually the most effective and non invasive solution.
Contact lenses cannot be used to solve eye co-ordination problems which require prisms.