Comparison of function and fixation of small incision circular and oval poly(methyl methacrylate) intraocular lenses

1992 ◽  
Vol 18 (2) ◽  
pp. 136-139 ◽  
Author(s):  
Peter L. Davis
Keyword(s):  
Methyl Methacrylate ◽  
Intraocular Lenses ◽  
Poly Methyl Methacrylate ◽  
Small Incision

Evaluation of cellular adhesions on silicone and poly(methyl methacrylate) intraocular lenses in monkey eyes

2001 ◽  
Vol 27 (12) ◽  
pp. 2036-2040 ◽  
Author(s):  
Yoshitaka Ohnishi ◽  
Takeshi Yoshitomi ◽  
Taiji Sakamoto ◽  
Kimihiko Fujisawa ◽  
Tatsuro Ishibashi
Keyword(s):  
Methyl Methacrylate ◽  
Intraocular Lenses ◽  
Poly Methyl Methacrylate

Decreased Attachment of Bacteria to Lubricin Coated Intraocular Lenses

2011 ◽  
Vol 1316 ◽  
Author(s):  
George E. Aninwene ◽  
Erik Taylor ◽  
Amy Mei ◽  
Gregory D. Jay ◽  
Thomas J. Webster
Keyword(s):  
Staphylococcus Aureus ◽  
Synovial Fluid ◽  
Surface Energy ◽  
Methyl Methacrylate ◽  
Intraocular Lens ◽  
Bacterial Attachment ◽  
Intraocular Lenses ◽  
Poly Methyl Methacrylate ◽  
Bacterial Proliferation

ABSTRACTLubricin is an amphiphilic glycoprotein that is found in the synovial fluid [1]. This protein holds promise as an anti-biofouling agent. This study investigated lubricin’s ability to prevent bacterial attachment and proliferation on intraocular lenses. The findings from this study indicated that lubricin is able to reduce the attachment of Staphylococcus aureus to poly (methyl methacrylate) intraocular lens. Lubricin coatings were confirmed on the surfaces after a 2 hour soak by changes in surface energy. Also, lubricin reduced bacterial proliferation.

scholarly journals Sulfur Hexafluoride (SF6) Plasma Treatment of Medical Grade Poly(methyl methacrylate)

Coatings ◽  
2020 ◽  
Vol 10 (2) ◽  
pp. 135
Author(s):  
Stefano Zanini ◽  
Antonio Papagni ◽  
Luca Vaghi ◽  
Baljit Kaur Thatti ◽  
Stephen Barton ◽  
...  
Keyword(s):  
Methyl Methacrylate ◽  
Plasma Treatment ◽  
Photoelectron Spectroscopy ◽  
Sulfur Hexafluoride ◽  
Morphological Changes ◽  
Surface Hydrophobicity ◽  
Intraocular Lenses ◽  
Poly Methyl Methacrylate ◽  
Vis Spectroscopy ◽  
Medical Grade

Medical-grade poly(methyl methacrylate) (PMMA) is widely employed in the fabrication of intraocular lenses (IOLs), but suffers from opacification, a postoperative complication that leads to the failure of the implanted intraocular lenses. The opacification occurs when inorganic-based deposits accumulate on the surface of the IOL and are prevalent in hydrophilic materials. Here, the surface of medical-grade PMMA has been fluorinated by sulphur hexafluoride (SF6) plasma treatment to increase surface hydrophobicity thus improving the material lifetime in optical applications. Hydrophobic properties of the treated PMMA were investigated by means of contact angle measurements, while chemical modification was assessed by X-ray Photoelectron Spectroscopy (XPS) and Attenuated Total Reflectance Fourier Transform Infrared (ATR/FTIR) spectroscopy. Surface morphological changes due to possible etching effects were investigated by Atomic Force Microscopy (AFM). The transparency of the treated PMMA was assessed by UV/VIS spectroscopy. Finally, the influence of the plasma treatment on the inorganic salts deposition was investigated by immersion in Simulated Aqueous Humour (SAH), followed by XPS analysis. The modified samples showed less deposition on the surface than the unmodified sample, moreover, a decrease of the transmittance in the UV-violet range (300–430 nm) was detected, open the possibility of interesting applications of this treatment for the creation of a UV filter in ophthalmic optical devices.

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