The direction of pull of the muscles forms a 23Â° angle relative to the visual axis in the primary position, giving rise to secondary and tertiary functions. The secondary action of vertical rectus muscles is torsion. The superior rectus is an incyclotorter, and the inferior rectus is an excyclotorter.
-Marcia. Dear Marcia, Eyelash growth serums generally contain either a prostaglandin derivative, like prescription Latisse, or over-the-counter Revitalash; peptides, like Jan Marini Growth Serum; or vitamins, like Peter Thomas Roth Lashes to Die For.
Bimatoprost: Considerations. You will notice eyelash growth after two to four months of daily use of Latisse. If you stop using Latisse, your eyelashes will return to their prior appearance in four to six weeks. Latisse is a prescription product, so ask your doctor about it.