Pemphigus vulgaris. Pemphigus vulgaris Pemphigus is a rare skin disorder characterized by blistering of your skin and mucous membranes. The most common type is pemphigus vulgaris, which involves painful sores and blisters on your skin and in your mouth.
This is a new technology of tinting the optical lenses, with the tint darker for the upper part of the prescription lens, and the tint gradually becoming lighter for lower part of the lens. This arrangement makes the wearer more at ease by enjoying the better sunshade as well as the better vision acuity seeing through the lower part.
The objective itself is usually a cylinder containing one or more lenses that are typically made of glass; its function is to collect light from the sample. Microscope objectives are characterized by two parameters: magnification and numerical aperture. The magnification typically ranges from 4Ã to 100Ã.