Is a minus lenticular used in high plus or high minus GP Rxes to help promote lid attachment?

Is a minus lenticular used in high plus or high minus GP Rxes to help promote lid attachment?

• A. High plus
• B. High minus
• C. Both
• D. Neither

Answer: (A)

In GP fitting, altering the back surface with a lenticule changes how the lens distributes power across the optic zone, which in turn affects how the eyelid interacts with and holds the lens. A minus lenticule adds negative power in the peripheral area, reshaping the posterior surface so the edge of the lens sits more favorably under the upper lid. This helps the lid grip and attach the lens more securely, which is especially useful when the refractive error is very high plus, where the lid tends to push the lens away due to greater central vault. For high minus prescriptions, this same peripheral modification isn’t typically used for promoting lid attachment.

In GP fitting, altering the back surface with a lenticule changes how the lens distributes power across the optic zone, which in turn affects how the eyelid interacts with and holds the lens. A minus lenticule adds negative power in the peripheral area, reshaping the posterior surface so the edge of the lens sits more favorably under the upper lid. This helps the lid grip and attach the lens more securely, which is especially useful when the refractive error is very high plus, where the lid tends to push the lens away due to greater central vault. For high minus prescriptions, this same peripheral modification isn’t typically used for promoting lid attachment.