Paul Klein, OD, of Broward Eye Care in Fort Lauderdale, Fla., points to substantial profits for doctors willing to refresh their knowledge of fitting oxygen permeable lenses and invest in inventory. Other underutilized opportunities: fitting toric contact lenses on patients with astigmatism of 0.75D and higher, and multifocal contact lenses for presbyopes. Patients understand that specialty contact lenses are premium products and are willing to pay more for them, provided you make a good presentation.