Search results for "structures"
showing 10 items of 4815 documents
Argon laser suture lysis following glaucoma filtering surgery – A short introduction to the procedure
2010
Abstract Background Trabeculectomy is the most commonly performed glaucoma filtering surgery. The success of the outcome of an operation to reduce the intraocular pressure (IOP) is dependent on postoperative wound modulation by antimetabolite therapy and by flow regulation of the filtering bleb, which can be achieved by argon laser suture lysis. Methods and case report Postoperative IOP controls, examination of bleb formation and bleb massage can lead to the decision to perform up to four argon laser suture lyses in order to reduce IOP and enhance aqueous humor flow and bleb formation. The procedure is described here in a case report. Conclusion After glaucoma filtering surgery, argon laser…
Current Status of Epibulbar Anti-glaucoma Drainage Devices in Glaucoma Surgery
2012
SUMMARY Background: The term “glaucoma” covers a hetero geneous group of progressive optic neuropathies that are accompanied by characteristic visual-field defects. Primary open-angle glaucoma, the most common type, progresses insidiously and causes blindness if untreated. All current forms of treatment aim at lowering the intraocular pressure (IOP) in patients whose IOP is elevated. The implantation of anti-glaucoma drainage systems is one of the available options for surgical treatment. Methods: This review is based on pertinent literature retrieved by a selective search, including glaucoma treatment guidelines from Germany and abroad. Results: A paradigm shift is currently underway regar…
Dietary polyunsaturated fatty acids, intraocular pressure, and glaucoma
2014
Abstract Glaucoma is a progressive optic neuropathy and is the second leading cause of blindness worldwide. Estimations predict that nearly 80 million people will be affected by the disease in 2020. Increased intraocular pressure (IOP) has been recognized as a major risk factor for developing glaucoma. Although IOP-lowering agents have been shown to be effective for decreasing the progression of glaucoma, extensive research has been done to identify modifiable lifestyle factors involved in the pathogenesis of this disease. Among these factors, dietary lipids and particularly dietary polyunsaturated fatty acids (PUFAs) represent a promising approach. The aim of this chapter is to summarize t…
Latanoprost-induced iris darkening: a morphometric study of human peripheral iridectomies.
2003
Abstract Purpose. This microscopic study was undertaken to compare the melanocytes of peripheral iridectomy specimens from two eyes that had latanoprost-induced iris darkening (LIID) with iridectomies taken from the fellow untreated eyes. Methods. The two patients in this study were the ones who underwent LIID in the latanoprost treated eye from a series of 17 patients requiring bilateral trabeculectomy. The first trabeculectomy procedure provided a control peripheral iridectomy for each patient, whereas the second eye was treated with once daily 50 μg ml−1 latanoprost drops for 6 months. The four peripheral iridectomy specimens from the two LIID patients were subjected to quantitative morp…
Genome-wide association analyses identify multiple loci associated with central corneal thickness and keratoconus
2013
The author manuscript of this article is open access and is freely available online at PubMed Central
Implantation of a custom intraocular lens with a 30-diopter torus for the correction of high astigmatism after penetrating keratoplasty.
2003
Abstract We present a 62-year-old woman who had implantation of an intraocular lens (IOL) with a torus of 30.0 diopters (D) in an eye after penetrating keratoplasty. The patient presented with cataract and a best corrected visual acuity of 20/400. Penetrating keratoplasty was performed in 1975 because of decompensated keratoconus. With a clear but inferiorly decentered corneal graft, visual acuity was limited because of keratoplasty-related high corneal astigmatism of 22.5@156 that could not be successfully treated with spectacles or contact lenses. A custom toric IOL with –30.0 D of cylindrical power was implanted in the capsular bag via a sclerocorneal tunnel incision. Additionally, a sph…
Mathematical simulation of Doppler changes in late-onset smallness; progression patterns of cerebral and umbilical anomalies define two types of late…
2019
To evaluate the progression of Doppler abnormalities in fetuses with late-onset fetal smallness (SGA) that become growth restricted (FGR).524 Doppler examinations of the umbilical and cerebral arteries systems, belonging to 442 late-onset SGA fetuses after week 34, were studied, evaluating by means of the statistical difference with the respective abnormal centiles, the pattern of progression into abnormal Doppler values and the distribution and cumulative sum of Doppler anomalies according to the interval to delivery.Only one third (33.5%,Two thirds of late-onset fetal smallness occurs without hemodynamic changes. In half of the remaining cases an initial cerebral vasodilation defines a gr…
Leptin and Leptin Receptor Are Expressed in the Human Endometrium and Endometrial Leptin Secretion Is Regulated by the Human Blastocyst1
2000
Embryonic implantation is a crucial event for the human reproductive function. Cytokines and paracrine molecules have been proposed as putative local regulators of this process. The leptin or the OB protein has been linked to the reproductive function and inflammatory response. In the present study, we describe for the first time the expression of leptin and leptin receptor (long form) in the secretory endometrium and that endometrial leptin secretion is regulated in vitro by the human blastocyst. Leptin and leptin receptor messenger RNA and protein were identified in secretory endometrium and in cultured endometrial epithelial cells (EECs) by RT-PCR, Western blot, and immunohistochemistry.…
Fulminant bilateral Haemophilus influenzae keratitis in a patient with hypovitaminosis A treated with contaminated autologous serum
2011
We report on a patient with hypovitaminosis A treated with autologous serum (AS) who had bilateral infectious ulcers positive for Haemophilus influenzae. The patient suffered a perforation of his right eye and total healing of his left eye with a residual leukoma. In cases of severe malnutrition, serum levels of vitamins and bacteriostatic and growth factors are reduced, so AS would not only be ineffective but also increase the risk of secondary corneal infection. The prophylactic use of a topical antibiotic would be useful in treatment with AS, especially in patients who do not use and adequately store the eye drops, as in our patient.
Oxidative tissue damage after phacoemulsification: influence of ophthalmic viscosurgical devices.
2003
To quantify the oxidative tissue damage after phacoemulsification, correlate the damage to the energy applied, and investigate the influence of ophthalmic viscosurgical devices (OVDs).Department of Ophthalmology, University of Mainz, Mainz, Germany.The study comprised 130 eyes operated on by 1 surgeon using the same phacoemulsification machine. Some eyes received an OVD before phacoemulsification and some did not. Energy values were expressed as phaco time; that is, ultrasound (US) time (seconds) after conversion to 100% phaco power. Patients were grouped as follows: Group 1, phaco time less than 20 seconds and no OVD; Group 2, phaco time 20 to 40 seconds and no OVD; Group 3, phaco time mor…