What causes dipole-dipole interactions? The first thing required for there to be dipole-dipole interactions between molecules is for both molecules to have a dipole. These dipoles may be permanent (polar molecules) or temporary (instantaneous or induced dipoles in non-polar molecules). Polar molecules have an asymmetrical electron cloud/charge distribution.
Answers (2) 1  The abnormal growth direction of the eyelashe is generally called trichiasis. For children and teenagers, the cause of trichiasis is usually the abnormal growth of the epiblepharon and the epicanthus, or the congenital eyelid introversion. 2  That your eyelashes turn inward means you are suffering from trichiasis. If your eye lashes grow inward, you will feel uncomfortable because that the eye lashes are coarse. Trichiasis is usually caused by entropion, blepharitis, eye injury, distichiasis and idiopathic.
Usually the bacteria grow in the root (follicle) of an eyelash. An internal hordeolum is caused by infection in one of the tiny oil glands inside the eyelid. A chalazion forms when an oil gland in the eyelid becomes blocked. If an internal hordeolum doesn't drain and heal, it can turn into a chalazion.ost will go away on their own without treatment. 1  A stye is an infection that causes a tender red lump on the eyelid. 2  Most styes occur along the edge of the eyelid. 3  When a stye occurs inside the eyelid, it is called an internal hordeolum (say hor-dee-OH-lum).