If you decide to replace glasses with contact lenses, then you need to choose them correctly. Do this without consulting an ophthalmologist is not recommended, so be sure to make an appointment.
Only a doctor is able to recommend a suitable model. It can be PureVision 2, created by more modern technologies or any other. Depends on the choice of the model not only from the features of your eyes and personal preferences, but also from some other factors.
The doctor will necessarily send on inspection (it is necessary to learn, how much healthy eyes and how bad vision at the patient). At the same time, questions will be asked about other possible diseases that may well be detected during the examination.
After this, the lens selection itself begins. First, they must "try on" - the doctor dresses them, and after 15 minutes checks how well they sit and do not move. This procedure will have to pass several times a minimum, so that you should prepare for a small discomfort.
Also, lenses must meet your requirements - they can be disposable or reusable. Other ways of leaving are also different, because all this affects the way of life. And this is not including correct vision correction.
In the finals there will be a mere trifle - you will need to learn how to properly dress and remove lenses, and also learn how to look after them.