Inflammatory diseases of male reproductive organs typically are infectious, fungal or parasitic nature and caused by viruses, bacteria, fungi, protozoa, helminths. Balanitis and balanoposthitis would be the most frequent penile diseases. Balanitis is inflammation from the glans penis. If inflammation covers the foreskin, and another can talk about balanoposthitis. Pathogens including Escherichia coli, Proteus, enterococci and the like that live in the human body in many cases cause inflammation in the reproductive organs. With the weakening of the body resistance, infection spreading along the urinary tract from the lymph vessels can infect the urethra (urethritis), prostate (prostatitis), seminal vesicles (vesicles), vas deferens, epididymis and testicles. In clinical causes, asoospermia and oligospermia are normally a result of UTI, prostatitis, epididymtiis and vesiculitis. For the sufferers who experiencing antisperm antibody, the result of mycoplasma cultivation presents to get optimistic, indicating that this kind of antisperm antibody is connected along with the infection of mycoplasma. The varices within the spermatic cord and hydrocele typically are connected to epididymitis and inflammation of spermatic duct, where furthermore, it designates a fact, that's, the diseases of low sperm count and dead sperm are closely linked to the infection of genital tract. Sunglasses allow better vision in bright daylight, and may protect one's eyes against damage from high levels of ultraviolet light. Typical sunglasses are darkened for protection against bright light or glare; some specialized glasses are clear in dark or indoor conditions, but turn into sunglasses when in bright light. Most sunglasses do not have corrective power in the lenses; however, special prescription sunglasses can be ordered. Specialized glasses may be used for viewing specific visual information (such as stereoscopy) or 3D glasses for viewing three-dimensional movies. Sometimes glasses with no corrective power in the lenses are worn simply for aesthetic or fashion purposes. Even with glasses used for vision correction, a wide range of designs are available for fashion purposes, using plastic, wire, and other materials.