Single vision contact lenses are still the most popular type of lenses available. Most people wear them 2 weekly, monthly or daily depending on their wearing shedule. As a rule I would suggest:

2 weekly replacement lenses
For someone who wants to wear lenses 14 -16 hrs a day 6-7 days a week they are the ideal choice combining comfort with long periods of wear.

Monthly replacement lenses
These are best suited to regular wear up to an average of 14 hours a day 6-7 days a week offering the best combination of comfort and cost

1 DAY lenses
Are by far the best choice for irregular or casual wear offering the best comfort and convenience.
 

PD Rees    Ophthalmic Opticians    357c Derby Rd    Lenton    Nottingham    NG7 2DZ    (0115) 9781823   /   9422030