What are RGP lenses made of?

Gas permeable (GP) contact lenses, also known as rigid gas permeable (RGP) lenses, are hard contact lenses made of silicone-containing compounds that allow oxygen to pass through the lens material to the eye. Though not as popular as soft contact lenses, GP lenses offer a number of advantages over soft lenses.

Who makes Boston gas permeable contact lenses?

Bausch & Lomb Boston
Bausch & Lomb Boston IV Gas Permeable Contact Lenses.

What is Boston EO?

Polymer Technology’s Boston EO is a gas permeable contact lens designed for those with myopia, hyperopia, presbyopia, and astigmatism. Boston EO contact lenses are made entirely from enflufocon B, a strong and durable polymer.

What material is used in contact lenses?

Contact lens materials are typically based on polymer- or silicone-hydrogel, with additional manufacturing technologies employed to produce the final lens. These processes are simply not enough to meet the increasing demands from CLs and the ever-increasing number of contact lens (CL) users.

How are RGP lenses made?

Rigid gas permeable lenses are sculpted into shape with the aid of specialized lathe cutting tools. Lens material is carved into a precision-cut lens and then polished. The level of accuracy and precision used to make RGP lenses is superior to soft contact lenses.

Are RGP lenses customized?

2) RGP lenses are personalized This type of contact lens is customized to the shape of your cornea, allowing for a wider range of vision correction and a better overall fit.

How do you use Boston conditioning solution?

Rub both sides of the lenses carefully with two to four (4) drops of Boston ADVANCE Cleaner in the palm of your hand for twenty (20) seconds. Rinse each side of the lens thoroughly for at least 5 seconds or as needed to remove the cleaner with a saline solution indicated for the care of gas permeable contact lenses.

How do you fit RGP?

The ideal RGP fit should show alignment of the back surface of the lens with the cornea over most of the surface. A narrow band of edge clearance at the periphery is required to enable adequate tear exchange and facilitate lens removal (Figure 2).

Is Teflon in contact lenses?

Modern development of rigid contact lenses The newest lenses are made from sophisticated fluorocarbon compounds and are commonly misnamed “Teflon” lenses. These lenses have better surface characteristics, which make them very comfortable. In addition, they have even greater permeability to oxygen.