To use the diaphragm, first cover the inside of it with spermicide. Then insert it into your vagina so that it covers your cervix. You can insert the diaphragm up to 6 hours before sex.
This is where the Kratky method shines. Itâs a technique that allows you to grow hydroponically without electricity, pumps, or wicks of any kind. In fact, you donât even have to change your reservoir or add nutrients. Itâs as close to a completely âhands offâ growing technique as Iâve ever seen.
Definition. Radial keratotomy (RK) is a type of eye surgery used to correct myopia (nearsightedness). It works by changing the shape of the cornea-the transparent part of the eye that covers the iris and the pupil.eratotomy. incision of the cornea. radial keratotomy an operation in which a series of incisions is made in the cornea from its outer edge toward its center in a spokelike fashion; done to flatten the cornea and thus to correct myopia.