A review of cosmetic contact lens infections

Lim, Chong Yah; Stapleton, Fiona

doi:10.1038/s41433-018-0257-2

Cited by 32 publications

(39 citation statements)

References 70 publications

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“…The regular use of CL may cause dry eye syndrome which leads to inflammation, discomfort, and corneal wound. [ 115 ] A smart CL was developed to have a self‐moisturizing capability. This keeps the CL moist and maintains the tears between the lens and the eye surface.…”

Section: Smart Clsmentioning

confidence: 99%

Prospects for Additive Manufacturing in Contact Lens Devices

et al. 2020

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Additive manufacturing (3D printing) has the ability to architect structures at microscale, giving rise to the development of functional contact lenses (CLs) with inbuilt sensing capabilities. 3D printing technology enables fabrication of CLs without surface geometry restrictions. Spherical, nonspherical, symmetric, and asymmetric lenses can be manufactured in an integrated production process. Advantages of 3D printing over conventional techniques include fast and easy production, one‐step manufacturing, and no post processing such as grinding or polishing. In addition, and most significantly, 3D printing can create chambers within the wall of the lenses by taking the advantage of computer‐aided modeling and layer‐by‐layer deposition of the materials. These inbuilt chambers can be used for loading drugs and sensing elements. The computer‐aided design modeling can allow for manufacturing of patient‐specific CLs. This article focuses on the 3D‐printing approaches and the challenges faced in fabricating CLs. 3D‐printing technology as a technique for manufacturing of CLs is discussed, in addition to the manufacturing challenges and the possible solutions to overcome the obstacles.

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Section: Smart Clsmentioning

confidence: 99%

Prospects for Additive Manufacturing in Contact Lens Devices

et al. 2020

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“…Although pHEMA hydrogel had been made to commercial contact lenses, some problems could not be neglected including protein deposition [10][11][12]. Moreover, environment of pHEMA hydrogel was very suitable for bacterial growth, which easily caused infection of eyes.…”

Section: Introductionmentioning

confidence: 99%

“…Moreover, environment of pHEMA hydrogel was very suitable for bacterial growth, which easily caused infection of eyes. In order to solve the problem, contact lens care solution was used to wash contact lens for getting rid of absorbed proteins as well as absorbed bacteria [10][11][12]. Recently, some measures of pHEMA hydrogel modification were made to improve antiprotein adsorption property and antibacterial property.…”

Section: Introductionmentioning

confidence: 99%

A Facile Route to Fabricate CS/GO Composite Film for the Application of Therapeutic Contact Lenses

Chen

Wang

Kong

et al. 2020

Advances in Materials Science and Engineering

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Traditional contact lenses bring convenience for ophthalmic drug delivery. However, either as contact lenses or as drug carriers, traditional materials have still some drawbacks in the field. Therefore, a transparent film was designed and investigated for the application of therapeutic contact lenses. Chitosan (CS)/graphene oxide (GO) composite film and CS film were fabricated with acceptable transparent and tensile properties by simple casting flow method. Although swelling ratio of CS/GO composite film was higher than that of CS film with significant difference, both formed films had suitable swelling ratio for contact lens application. Both CS/GO composite film and CS film exhibited typical CS infrared characteristic peaks. CS/GO composite film had significant greater breaking strength than CS film, but its elongation at break was a little lower than CS film. Either CS/GO composite film or CS film exhibited good hydrophilic property with a contact angle of around 20 degree. Ofloxacin as a model drug was loaded into films by adsorption diffusion method. Loaded drug amount in CS/GO composite film was a little larger than that in CS film, but without significant difference. The drug release behaviors from CS/GO composite film or CS film were investigated and revealed that the loaded drug could be controlled to release in the first hour. Two kinds of cells were used to evaluate the biocompatibility of films by in vitro method. It was found that both CS/GO composite film and CS film could support human umbilical vein endothelial cell (HUVEC) growth. But for human epidermal fibroblasts (HSF) cells, CS/GO composite film could promote HSF cells growth and proliferation much better than CS film.

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“…[3] Most wearers of tinted soft contact lenses are teenagers and young adults, with females accounting for the majority. [5][6][7][8] Tinted soft contact lenses consist of a traditional transparent contact lens with a pigment layer attached to the periphery. The pigments used in these lenses must be non-toxic and safe to wear.…”

Section: Introductionmentioning

confidence: 99%

Assessment of ocular surface response to tinted soft contact lenses with different characteristics and pigment location

Hsu

Hong

Liou

et al. 2020

International Journal of Optomechatronics

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This study investigated the characteristics and location of the pigment layer of commercially available tinted contact lenses and evaluated ocular surface properties. The rub-off test and anterior segment Fourier-domain optical coherence tomography were used to analyze the pigment layer of the lenses. They also completed a rating questionnaire of subjective symptom perception after wearing. Among the four groups, there were significant differences in the ocular surface properties on day 3 (p < 0.05). Most of the ocular surface properties were significantly different between baseline and after being worn on day 1, day 3 and day 7 (p < 0.05), especially for tinted contact lenses with pigment layers on the lens surface. On initial wearing of the tinted contact lenses, contact between pigment layers on the surface of the lens and ocular tissues appeared to irritate the ocular surface more than non-pigment layers on the surface. Pigment-tinted soft contact lenses with lower oxygen permeability may cause worse ischemic signs on the ocular surface. However, the ocular surface adapted gradually and the symptoms decreased after wearing the tinted contact lens.

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A review of cosmetic contact lens infections

Abstract: This paper provides a comprehensive review of the existing literature surrounding cosmetic contact lens infections. In this paper, lens-related, dispensing-related and patient-related factors are examined in detail.

Cited by 32 publications

References 70 publications

Prospects for Additive Manufacturing in Contact Lens Devices

Prospects for Additive Manufacturing in Contact Lens Devices

A Facile Route to Fabricate CS/GO Composite Film for the Application of Therapeutic Contact Lenses

Assessment of ocular surface response to tinted soft contact lenses with different characteristics and pigment location

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