What type of prism does Reverse Slab Off create?

Reverse Slab Off creates a base down prism, which is crucial for achieving balanced vision in eyeglass prescriptions, particularly when there is a significant difference in lens power between the two eyes due to conditions like anisometropia. This technique helps to reduce the image jump that can occur when pectacular lenses are used.

The base down prism is specifically designed to align the visual axis of the higher-powered lens with that of the lower-powered lens when the wearer is looking straight ahead. This is generally important for those who may encounter visual discomfort or double vision as a result of differing prescription strengths. By incorporating a base down prism, the reverse slab-off technique minimizes visual strain and enhances comfort, especially when viewing nearby objects.

Understanding the nature of how the prism is oriented helps in ensuring that the corrective lenses function as intended, allowing for clear and comfortable vision across varying distances.