They concluded that the vast majority (95.4%) of patients were satisfied with their outcome after LASIK surgery.Ophthalmologists use various approaches to analyze the results of refractive surgery, and alter their techniques to provide better results in the future. Some of these approaches are programmed into the devices ophthalmologists use to measure the refraction of the eye and the shape of the cornea, such as corneal topography. Risks
While refractive surgery is becoming more affordable and safe, it may not be recommended for everybody. People with certain eye diseases involving the cornea or retina, pregnant women, and patients who have medical conditions such as glaucoma, diabetes, uncontrolled vascular disease, or autoimmune disease are not good candidates for refractive surgery. Keratoconus, a progressive thinning of the cornea, is a common corneal disorder. Keratoconus occurring after refractive surgery is called Corneal Ectasia. It is believed that additional thinning of the cornea via refractive surgery may contribute to advancement of the disease that may lead to the need for a corneal transplant. Therefore, keratoconus is a contraindication to refractive surgery. Corneal topography and pachymetry are used to screen for abnormal corneas. Furthermore, some peoples eye shape may not permit effective refractive surgery without removing excessive amounts of corneal tissue. Those considering laser eye surgery should have a full eye examination. Although the risk of complications is decreasing compared to the early days of refractive surgery, there is still a small chance for serious problems. These include vision problems such as ghosting, halos, starbursts, double-vision, and dry-eye syndrome.
Sperm granulomas form in 20-50% of vasectomy procedures. An injury to the epididymal epithelium is caused by penetration of germ cells into the epididymal supportive tissue. This infiltration of germ cells allows for the pathogenesis of sperm granulomas. Moreover, the penetration of germ cells leads to inflammatory and autoimmune reactions that further increase the risk of sperm granuloma formation.Sperm granuloma can also mimic the presence of an abnormal number of testis on ultrasound.Sperm granulomas are mostly asymptomatic. However, they can cause pain and swelling of the epididymis, spermatic cord, and testis. The pain usually radiates to the groin, the junctional area between the abdominal wall and the thigh, and can imitate the feeling of kidney spasms. Development of a Sperm Granuloma
Sperm granuloma is a common complication of vasectomy. Vasectomies are a common, effective procedure for sterilization of individuals assigned male at birth. History of trauma or epididymitis can also lead to sperm granuloma. In vasectomies, the vas deferens are cut and the two ends are tied to prevent sperm from passing. Sperm granuloma may then grow at the point where the vas deferens were cut. This could happen two to three weeks post procedure. Sperm granuloma can also form from sperm leaking from the vas deferens into the surrounding interstitium. Leakage of sperm elicits an immune response which can lead to chronic inflammation. A histological examination can confirm a sperm granuloma by checking for inflammatory markers such as macrophages and lymphocytes surrounding the sperm core. Treatment and prevention
Most sperm granulomas are asymptomatic and absorbed over time.