Effect of UV-absorbing Contact Lenses on Conjunctival Ultraviolet Autofluorescence

Haworth, Kristina M.; Belair, Christianne

doi:10.1080/02713683.2019.1707230

Cited by 2 publications

(2 citation statements)

References 9 publications

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“…There is conjecture regarding the location of UVAF, with some reporting greater nasal prevalence 11 , 12 , 41 , while equal nasal and temporal prevalence has also been reported 1 . Similarly, regarding the UVAF area, the nasal conjunctiva has been reported to have greater UVAF changes than temporal 10 , 12 , 41 , 42 , though no statistical difference between nasal and temporal UVAF areas has also been reported 10 , 11 , 43 . In this study considering the four subgroups determined by the presence of nasal and temporal UVAF, there were approximately equal proportions as there were seven participants with only nasal UVAF and eight participants with only temporal UVAF.…”

Section: Discussionmentioning

confidence: 96%

The association between conjunctival and scleral thickness and ocular surface ultraviolet autofluorescence

Rajasingam

Shaw

Davis

et al. 2023

Sci Rep

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Ultraviolet autofluorescence (UVAF) imaging is used to visualise ocular surface changes due to sunlight exposure and so is considered to be a biomarker for UV damage. The conjunctival and scleral thicknesses of participants with and without ocular surface UVAF were measured to examine the UVAF associated tissue thicknesses. The presence of UVAF on the ocular surface was associated with significant differences in tissue thickness including thinner conjunctival epitheliums and thicker scleras but predominantly thickening of the conjunctival stroma. Participants were also classified into four groups according to the presence and absence of UVAF on both the temporal and nasal conjunctivas. It was noted that for those that had only nasal UVAF, the temporal conjunctival stroma was significantly thicker even without the presence of UVAF. Some participants with temporal UVAF had signs of pinguecula observed with slit lamp examination and some had OCT SLO enface imaging darkening. These findings highlight the potential of techniques other than slit lamp examination, including tissue thickness measurement and UVAF photography, in the detection of early UV-related changes to the ocular surface.

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Section: Discussionmentioning

confidence: 96%

The association between conjunctival and scleral thickness and ocular surface ultraviolet autofluorescence

Rajasingam

Shaw

Davis

et al. 2023

Sci Rep

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“…Morphology and adhesion have also been analyzed via scanning electron microscopy and transmission electron microscopy [70,76]. Contact lenses themselves have also been noted to have ultraviolet autofluorescence, which could affect microscopic evaluation [77]. Most quantitative methods revolve around removing the microorganisms from the contact lens after the adhering period in order to then quantify the removed population in solution or on a microscope slide.…”

Section: In Vitro Analysesmentioning

confidence: 99%

Microbial Adherence to Contact Lenses and Pseudomonas aeruginosa as a Model Organism for Microbial Keratitis

Campolo¹,

Pifer²,

Shannon³

et al. 2022

Pathogens

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Microbial keratitis (MK), the infection of the cornea, is a devastating disease and the fifth leading cause of blindness and visual impairment around the world. The overwhelming majority of MK cases are linked to contact lens wear combined with factors which promote infection such as corneal abrasion, an immunocompromised state, improper contact lens use, or failing to routinely disinfect lenses after wear. Contact lens-related MK involves the adherence of microorganisms to the contact lens. Therefore, this review discusses the information currently available regarding the disease pathophysiology, the common types of microorganisms causing MK, physical and organic mechanisms of adhesion, material properties which are involved in adhesion, and current antimicrobial strategies. This review also concludes that Pseudomonas aeruginosa is a model organism for the investigation of contact lens microbial adherence due to its prevalence in MK cases, its extremely robust adhesion, antimicrobial-resistant properties, and the severity of the disease it causes.

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Effect of UV-absorbing Contact Lenses on Conjunctival Ultraviolet Autofluorescence

Cited by 2 publications

References 9 publications

The association between conjunctival and scleral thickness and ocular surface ultraviolet autofluorescence

The association between conjunctival and scleral thickness and ocular surface ultraviolet autofluorescence

Microbial Adherence to Contact Lenses and Pseudomonas aeruginosa as a Model Organism for Microbial Keratitis

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