How is Reverse Slab Off defined in terms of lens processing?

Reverse Slab Off is defined in lens processing as a technique that involves creating a specific effect in the lens, typically to compensate for anisometropia, where there is a significant difference in prescription between the two eyes. This process is achieved by using precast and premolded techniques to ensure that the lens has the desired thickness and shape in critical areas.

In practice, Reverse Slab Off entails creating a lens that has a specific topography that allows for enhanced visual comfort and alignment for the wearer, particularly when they have a higher prescription in one eye than the other. This technique leads to significant benefits, especially for individuals who may have issues like vertical imbalance or other alignment problems in their vision.

The approach taken for Reverse Slab Off means that the lenses can be made as part of a standard manufacturing process, allowing for consistent and accurate results. This contrasts with other options, which do not appropriately capture the specific method of processing that defines Reverse Slab Off in the context of corrective lens design.