Do you want to publish a course? Click here

Study of optic nerve head (ONH) and intra-ocular pressure (IOP) in pseudoexfoliation syndrome (PXS) patients Thesis prepared to get master’s degree in ophthalmology

" دراسة القرص البصري و ضغط العين عند مرضى متلازمة التقشر الكاذب "

1191   0   128   0 ( 0 )
 Publication date 2016
and research's language is العربية
 Created by Shamra Editor




Ask ChatGPT about the research

Aim: to study the prevalence of glaucomatous injury in pseudoexfoliation patients, and the relation of these injuries with IOP values. Methods: 75 PXS eyes were compared with 75 age matched control eyes, and so 21 unilateral PXS patients were studied by comparing their two eyes. The study contained ONH study with Heidelberg Retina Tomograph (HRT), and mean and range of IOP values. Results: ONH parameters which were compared between patients and controls included: disk area, rim area, cup area, mean RNFL thickness, vertical cup\disk ratio, MRA result, and GPS result. The difference was significant in all these parameters between patients and controls, also it was significant in mean IOP and its fluctuation. For unilateral PXS patients, no statistically significant difference was found in ONH parameters between the two eyes, but there was in IOP mean and range. Conclusion: PXS eyes are at high risk for developing glaucomatous optic nerve injuries, which were more probable with raised IOP mean and range; the risk also involved the other normal eye in unilateral PXS, certaining the systemating nature of pseudo exfoliation disease.

References used
KOLIAKOS GG, KONSTAS AG, SCHLÖTZER-SCHREHARDT U, et al. 8-Isoprostaglandin F2a and ascorbic acid concentration in the aqueous humour of patients with exfoliation syndrome. Br J Ophthalmol. 87(3): 2003; 353–356
ROTH M, EPSTEIN DL. Exfoliation syndrome. Am J Ophthalmol. 89(4): 1980; 477–481
MANISHI A. DESAI, MD AND RICHARD K. LEE, MD, PHD. The Medical and Surgical Management of Pseudoexfoliation Glaucoma. Int Ophthalmol Clin. 48(4): 2008 ; 95–113
rate research

Read More

This paper proposes a new approach for the segmentation of the retina images to obtain the optic nerve and blood vessels regions. We used retinal images from DRIVE and STARE databases which include different situations like illumination variations, d ifferent optic nerve positions (left, right and center). Illumination problem has been solved by preprocessing stage including image histogram-based illumination correction. Next, some morphological operations were used to filter the preprocessed image to obtain the ROI region, then, the center and radius of optic nerve were determined, and the optic nerve region was extracted from the original image. In blood vessels segmentation, we applied the illumination correction and median filtering.Then the closing, subtraction and morphological operations were done to get the blood vessels image which was thresholded and thinned to get the final blood vessels image.
Purpose: to study the Distribution of intraocular pressure in the age group 20-40 years old and the related factors: age, gender, family history, BMI, smoking. Methods: This was a population-based cross-sectional study of 1000 subjects All particip ant underwent IOP (intraocular pressure) measurement and a standardized survey for the initial data of the study. Results: The mean IOP for the study subjects was (17.6mmHg); the mean IOP in men was higher than women (17.53) vs (16.8) mmHg respectively. Ocular hypertension was found in 16.8% participants. IOP increased 0.5 mmHg for every 10 years of age. BMI (Body Mass Index) had a positive association with IOP. Subjects with positive family history of ocular hypertension had higher IOP (18.46) vs (16.98) mmHg. IOP was higher in smokers’ group (17.77) vs (16.29) mmHg. Multivariate analyzing showed that aging, smoking, male sex, family history were independent risk factors for ocular hypertension, otherwise there was no significant relationship between ocular hypertension and BMI.
Hyperimmunoglobulin E (Job) syndrome is considered to be a relatively rare disease. Its characterized by recurrent infections in skin (eg. boils, abscesses), recurrent upper respiratory tract infections (eg. otitis media, sinusitis and mastoiditis) , and lower respiratory infections (eg. recurrent pneumonia, which is often complicated by pneumatoceles and lung abscess), that are usually difficult to treat. The highly increased IgE levels are considered to be the hallmark of the disease. The syndrome has two types: one is inherited as an autosomal recessive, and the other, as an autosomal dominant trait. To highlight the clinical manifestations and laboratory findigs of Job disease, and to compare it with medical literature, to study the bacterial complications and differrent types of antibacterial treatments and treir results, and to increase the level of awareness among physicians.
Background& Objective: Selective IgA deficiency is the most common primary immunodeficiency in humans. Its prevalence ranges from 1 in 100 to 1 in 1000 in among Arab populations. The majority of patients with selective IgA deficiency are asymptomat ic. The remaining present with recurrent upper and lower respiratory tract infections, recurrent gastrointestinal infections, otitis media, sinusitis, celiac disease, giardiasis, allergic disorders and some autoimmune diseases. to highlight the clinical manifestations and laboratory findings of Selective IgA deficiency in our study, and to compare it with medical literature. To study the bacterial complications and their prevalence. Materials & Methods: A retrospective study was carried out in Damascus University Children’s Hospital on sixteen child diagnosed as Selective IgA deficiency, in a period of the last ten years (from 2000 till September 2010). Results: most cases in our study were among males, failure to thrive was found in 75%, hepatosplenomegaly in one third, the most prominent infectious complications were: recurrent pneumonia (in 87.5% of cases), recurrent GI infections (in 75% of cases) and UTI’s in (50%)of cases. On the other hand, the celiac disease was found in (25%) of our patients, which is much higher than described in medical literature. In general, the infectious complications had a good response to antibacterial therapy, and the IgA levels became normal in one patient, when he reached the age of eleven years. Conclusion: there is no information in medical literature about the association of selective IgA deficiency with hepatomegaly, splenomegaly, failure to thrive and an increased prevalence of urinary tract infections, therefore, it is necessary to conduct researches about this association.
The chronic administration of intraocular pressure –lowering eye drops is associated with changes on the surface of the cornea and our study aim to evaluate the corneal sensitivity in patients treated with eye drops contain benzalkonium hydrochloride for glaucoma .
comments
Fetching comments Fetching comments
mircosoft-partner

هل ترغب بارسال اشعارات عن اخر التحديثات في شمرا-اكاديميا