scholarly journals Iris Pigment Epithelium Cyst Accompanied by Ocular Hypertension

2020 ◽  
Vol 29 (3) ◽  
pp. 251-253
Author(s):  
E. Hazal AKTAŞ ◽  
Elif Betül TÜRKOĞLU
Keyword(s):  
Ocular Hypertension ◽  
Pigment Epithelium ◽  
Iris Pigment Epithelium

scholarly journals Time Course Changes of the Mechanical Properties of the Iris Pigment Epithelium in a Rat Chronic Ocular Hypertension Model

2018 ◽  
Vol 2018 ◽  
pp. 1-10 ◽  
Author(s):  
Tan Li ◽  
Lin Li ◽  
Zhicheng Liu
Keyword(s):  
Intraocular Pressure ◽  
Ocular Hypertension ◽  
Time Course ◽  
Pigment Epithelium ◽  
Posterior Chamber ◽  
Sprague Dawley ◽  
Male Adult ◽  
Sprague Dawley Rats ◽  
Course Changes ◽  
Iris Pigment Epithelium

Background. The flow field of aqueous humor correlates to the stiffness of iris pigment epithelium (IPE) which acts as a wall of posterior chamber. We focus on the variations of IPE stiffness in a rat ocular hypertension (OHT) model, so as to prepare for exploring the mechanism of duration of OHT. Methods. Episcleral venous cauterization (EVC) was applied on one eye of male adult Sprague-Dawley rats to induce chronic high intraocular pressure. According to the duration of OHT (0, 1, 2, 4, and 8 weeks), rats were randomly divided into Gw0, Gw1, Gw2, Gw4, and Gw8. Atomic force microscope (AFM) analysis was applied to test IPE stiffness in three regions: iris root, mid-periphery, and pupillary-margin in each group. Histological changes of IPE were also examined in Gw4 and Gw8. Results. There was an overall growing tendency of IPE stiffness in EVC eye. IPE in EVC eye was significantly stiffer than fellow eye in Gw2, Gw4, and Gw8 (in iris root, mid-periphery, and pupillary-margin, p<0.05). IPE in EVC eye in pupillary-margin was significantly stiffer than iris root in Gw4 and Gw8 (p<0.05). In EVC eye, IPE becomes thinner and IPE cell density decreases. Conclusion. IPE stiffness increases gradually with the duration of chronic high intraocular pressure.

Echographic Evaluation of Primary Cysts of the Iris Pigment Epithelium: Author Reply

1996 ◽  
Vol 121 (1) ◽  
pp. 100-101
Author(s):  
Paul A. Sidoti ◽  
George Baerveldt ◽  
Marcela Valencia ◽  
Nancy Chen ◽  
Ronald L. Green
Keyword(s):  
Pigment Epithelium ◽  
Author Reply ◽  
Iris Pigment Epithelium

Iris Pigment Epithelium Attachment to Aged Submacular Human Bruch’s Membrane

2004 ◽  
Vol 45 (12) ◽  
pp. 4520 ◽  
Author(s):  
Hiroshi Itaya ◽  
Vamsi Gullapalli ◽  
Ilene K. Sugino ◽  
Makoto Tamai ◽  
Marco A. Zarbin
Keyword(s):  
Pigment Epithelium ◽  
Bruch's Membrane ◽  
Bruch’S Membrane ◽  
Iris Pigment Epithelium

Neoplasms of the Iris Pigment Epithelium

1968 ◽  
Vol 66 (1) ◽  
pp. 31-41 ◽  
Author(s):  
Donald A. Morris ◽  
Paul Henkind
Keyword(s):  
Pigment Epithelium ◽  
Iris Pigment Epithelium

Detection of mRNA for proteins involved in retinol metabolism in iris pigment epithelium

1999 ◽  
Vol 237 (12) ◽  
pp. 1046-1051 ◽  
Author(s):  
G. Thumann ◽  
Norbert Kociok ◽  
Karl Ulrich Bartz-Schmidt ◽  
Peter Esser ◽  
Ulrich Schraermeyer ◽  
...  
Keyword(s):  
Pigment Epithelium ◽  
Retinol Metabolism ◽  
Iris Pigment Epithelium

scholarly journals Use of automatic refractometer infrared images to screen pigment dispersion syndrome: a cross-sectional observational study from a preliminary hypothesis

2020 ◽  
Vol 1 (1) ◽  
pp. 25-28
Author(s):  
Paolo Brusini ◽  
Veronica Papa
Keyword(s):  
Observational Study ◽  
Pigment Epithelium ◽  
Anterior Segment ◽  
Pigment Dispersion ◽  
Pigmentary Glaucoma ◽  
Infrared Images ◽  
Cross Sectional ◽  
Pigment Dispersion Syndrome ◽  
Automatic Refractometer ◽  
Iris Pigment Epithelium

Background: This study was performed to evaluate the use of anterior segment images, obtained with an automatic refractometer, to identify early defects of the iris pigment epithelium in patients with pigment dispersion syndrome (PDS) or pigmentary glaucoma (PG) without observable alterations at the slit lamp. Methods: In this cross-sectional observational study, carried out from January 2018 to December 2019, in Policlinico Citta di Udine Health Center, Udine, Italy, we observed anterior segment infrared images of 1700 subjects who were undergoing routine ophthalmological examination using an automatic refractometer. We selected infrared images of subjects who fulfilled the inclusion and exclusion criteria and looked for a focal defect in the iris pigment epithelium. Results: Twenty patients with focal iris pigment epithelial defect were identified and none of them showed evident signs of PDS. After the necessary explanations, they agreed to have further examinations to verify the possibility of PDS. An in-depth evaluation of ocular structures, including gonioscopy, demonstrated the presence of PDS in all subjects with iris defects. Conclusions: The use of infrared images obtained by an automatic refractometer could provide early and easy identification of PDS in crowded ophthalmology clinics or mass screening programs; yet, more well-designed studies are necessary to confirm these preliminary findings and prove this proposed screening tool.

Complete Ring Cyst of Iris Pigment Epithelium Documented by Ultrasound Biomicroscopy

2009 ◽  
Vol 40 (5) ◽  
pp. 495-497 ◽  
Author(s):  
Ailee Laham ◽  
Zélia M. Corrêa ◽  
James J. Augsburger ◽  
Martin Heur
Keyword(s):  
Pigment Epithelium ◽  
Ultrasound Biomicroscopy ◽  
Complete Ring ◽  
Iris Pigment Epithelium

scholarly journals B7+ iris pigment epithelium induce CD8+ T regulatory cells; both suppress CTLA-4+ T cells

2006 ◽  
Vol 176 (4) ◽  
pp. 2670.2-2670
Author(s):  
S. Sugita ◽  
T. F. Ng ◽  
P. J. Lucas ◽  
R. E. Gress ◽  
J. W. Streilein
Keyword(s):  
T Cells ◽  
T Regulatory Cells ◽  
Pigment Epithelium ◽  
Regulatory Cells ◽  
Iris Pigment Epithelium
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