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.
Here are a few products that will help you to boost the growth of your eye lashes. 1  You can use Lashfood. It is known to be a natural conditioner for the eye lashes. 2  Lilash is another product that you can use on your eye lashes. It contains lupinusalbus seed extract, glycerin, colloidal silver, silica and pathenol.