Abstract

In this paper, we report the relation between fabric characteristics and animal model cornea modifications associated with extended use of fluoro-siloxanyl styrene rigid gas permeable contact lens. Siloxanyl styrene and fluoromethacrylate rigid gas permeable contact lens is a newly designed optical medical device used in orthokeratology with an FDA approval of continuous wear for up to 30 days. To assess the influence on the cornea an animal model was used and histological data were collected. Scanning electron microscopy (SEM) was performed on the used lenses. Our conclusions concedes that with respects of the material, doctor�s slit lamp lens observation on regular basis should be considered as surface debris and lens scratches can influence the cornea in extended wear.

Highlights

  • Orthokeratology represents an alternative to refractive surgery in patients with refractive errors, especially children

  • Because corneal changes install very rapidly after putting the orthokeratology lens [8], the epithelial cells ability to weaken their bonds with other cells and take a new position, redistribute on the corneal surface is very less probable

  • The study protocol comprised in the placement of fluoromethacrylate-siloxanyl styrene copolymer rigid gas permeable contact lens (Menicon Z Night®, Menicon, Japan) on the right cornea, with blepharoraphy in the same eye under general anesthesia

Read more

Summary

Fabric characteristics and outcomes with extended use on animal model cornea

Siloxanyl styrene and fluoromethacrylate rigid gas permeable contact lens is a newly designed optical medical device used in orthokeratology with an FDA approval of continuous wear for up to 30 days. Orthokeratology represents an alternative to refractive surgery in patients with refractive errors, especially children It implies wearing a hard contact lens overnight in order to temporarily modify the shape of the cornea [1]. To the epithelial changes, are the stromal changes These changes are located in the mid-periphery of the cornea, outside the central zone, which is flat, result of the orthokeratology lens. In this area, only the epithelial suffers changes, without any stromal modification [2]. Siloxanyl styrene and fluoromethacrylate rigid gas permeable contact lens (Menicon Z Night®,Menicon, Japan) is a highly-permeable copolymer and the world’s only gas permeable lens material approved by the FDA for up to 30 days continuous wear [13]

Experimental part Materials and methods
Results and discussions
Conclusions
Full Text
Paper version not known

Talk to us

Join us for a 30 min session where you can share your feedback and ask us any queries you have

Schedule a call

Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.