نتایج جستجو برای: gas permeable lens

تعداد نتایج: 305961  

Journal: :Laser and Particle Beams 1991

Journal: :European journal of ophthalmology 2009
Cemile Banu Cosar M S Sridhar Bozkurt Sener

PURPOSE To report deep corneal vascularization noted 3 years after intrastromal corneal ringsegments (Intacs) implantation for the treatment of keratoconus. METHODS A 33-year-old male keratoconus patient intolerant to rigid gas permeable contact lens in the right eye underwent Intacs implantation. At 2 years postoperatively, slit-lamp examination of the right eye revealed superficial corneal ...

2017
Sarah Menzel Nicole Finocchiaro Christine Donay Anja Lena Thiebes Felix Hesselmann Jutta Arens Suzana Djeljadini Matthias Wessling Thomas Schmitz-Rode Stefan Jockenhoevel Christian Gabriel Cornelissen

In patients with respiratory failure, extracorporeal lung support can ensure the vital gas exchange via gas permeable membranes but its application is restricted by limited long-term stability and hemocompatibility of the gas permeable membranes, which are in contact with the blood. Endothelial cells lining these membranes promise physiological hemocompatibility and should enable prolonged appl...

Journal: :Water research 2017
M B Vanotti P J Dube A A Szogi M C García-González

Gas-permeable membrane technology is useful to recover ammonia (NH3) from liquid manures. In this study, phosphorus (P) recovery via MgCl2 precipitation was enhanced by combining it with NH3 recovery through gas-permeable membranes. Anaerobically digested swine wastewater containing approximately 2300 mg NH4+-N L-1 and 450 mg P L-1 was treated using submerged membranes plus low-rate aeration to...

Journal: :Investigative ophthalmology & visual science 2003
Patrick M Ladage James V Jester W Matthew Petroll Jan P G Bergmanson H Dwight Cavanagh

PURPOSE To study the effects of extended contact lens wear (EW) on the movement of basal epithelial cells toward the corneal surface. METHODS Rabbits (n = 32) were injected with 5-bromo-2-deoxyuridine (BrdU) to label a group of proliferating basal epithelial cells, and, 24 hours later, one randomly chosen eye was fitted with a low- or medium-oxygen-transmissible (Dk/t) rigid gas permeable (RG...

2015
Martin D. Brennan Megan L. Rexius-Hall David T. Eddington Arum Han

3D printing has emerged as a method for directly printing complete microfluidic devices, although printing materials have been limited to oxygen-impermeable materials. We demonstrate the addition of gas permeable PDMS (Polydimethylsiloxane) membranes to 3D-printed microfluidic devices as a means to enable oxygen control cell culture studies. The incorporation of a 3D-printed device and gas-perm...

Journal: :Eye & contact lens 2006
José M González-Méijome Jorge Jorge José B de Almeida Manuel A Parafita

PURPOSE Contact lenses have assisted the refractive correction of keratoconus since the 19th century. In these case reports, the authors describe their experience with a new soft contact lens design. METHODS The Soft K is a new soft lens comprising a thick fenestrated design to fit in patients with mild to moderate corneal distortion and fitting problems or physical intolerance to rigid gas-p...

Journal: :Investigative ophthalmology & visual science 2013
Gulfidan Bitirgen Ahmet Ozkagnici Rayaz A Malik Refik Oltulu

PURPOSE To quantitatively analyze laser scanning in vivo confocal microscopy (IVCM) images of all corneal layers in contact lens-wearing and noncontact lens-wearing keratoconus patients. METHODS The study population included rigid gas permeable (RGP) contact lens-wearing keratoconus patients (group 1; N = 29), keratoconus patients who did not wear contact lenses (group 2; N = 30), and subject...

نمودار تعداد نتایج جستجو در هر سال

با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید