An investigation into disposal and recycling options for daily disposable and monthly replacement soft contact lens modalities

Smith, Sarah; Orsborn, Gary; Sulley, Anna; Chatterjee, Neil B; Morgan, Philip B.

doi:10.1016/j.clae.2021.03.002

Cited by 20 publications

(14 citation statements)

References 22 publications

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Section: Introductionmentioning

confidence: 99%

“…1 Monthly replacement lenses may be preferred by some people due to cost considerations and concerns about the potential ecological consequences of daily lens disposal. 2 It has been shown that people fitted with monthly reusable lenses are more compliant with replacement schedules than those fitted with 2-week reusable lenses. [3][4][5] Recent advances in the technology for reusable daily wear contact lenses generally have been limited compared with those for daily disposable contact lenses.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Safety and Efficacy of a New Water Gradient Biomimetic Monthly Replacement Spherical Contact Lens Material (Lehfilcon A)

Wesley¹,

Giedd²,

Hines³

et al. 2022

OPTH

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Purpose The objective of this study was to evaluate the safety and performance of the investigational lens, lehfilcon A, when worn in a daily wear modality and replaced monthly as compared to the commercially available comfilcon A contact lens. Methods This was a multicenter, prospective, controlled, double-masked, randomized, parallel-group clinical study with bilateral lens wear for 3 months. In all, 115 subjects completed the study (77 with test lehfilcon A and 38 with control comfilcon A contact lenses). Distance visual acuity (VA) was assessed using Snellen VA. Lens performance was assessed by examining lens fit/movement, centration, front surface wettability and front/back surface deposits using slit-lamp biomicroscopy. Results At the 3-month follow-up visit, all eyes had a distance VA of 20/20 or better. Further, lens fit/movement was assessed as optimal in 92.9% of the eyes with lehfilcon A and 89.2% with comfilcon A. There were no ratings of unacceptably tight or loose fits for either contact lens material. Lens centration was assessed as optimal in 98.7% of eyes with lehfilcon A and 94.6% with comfilcon A. For front and back surface deposits, both materials showed minimal lens surface deposits. Front surface wettability was assessed as grade 0 or 1 for most of the study lenses in both lens groups across all attended study visits. There were no ocular adverse events related to the study lenses. Conclusion Overall, lehfilcon A showed excellent VA, optimal lens fitting characteristics, a clean surface, high wettability, and low risk for adverse events after 3 months of lens wear.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Safety and Efficacy of a New Water Gradient Biomimetic Monthly Replacement Spherical Contact Lens Material (Lehfilcon A)

Wesley¹,

Giedd²,

Hines³

et al. 2022

OPTH

View full text Add to dashboard Cite

show abstract

“…We will need our researchers to work alongside the professional bodies, employers and policy makers to be inventive, to investigate the solutions and to help set priorities. It is heartening to note that some have already started to work in this area and as a result we can be reassured that daily disposable contact lens wearers could recycle 100% of contact lens related waste 12 …”

Section: What Should We Do Next To Move Up a Gear?mentioning

confidence: 99%

How does the optometry profession move up a gear to tackle the problem of climate change?

Morgan¹,

Ryan

2021

Ophthalmic Physiologic Optic

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“…Daily disposable lenses are a product of significant advances in contact lens manufacturing, resulting in far lower costs per unit lens, making daily disposability economically viable. Daily replacement of contact lenses offers greater convenience for lens wearers, 6 enhanced compliance, 7 cost efficiency, 8 minimal environmental impact 9 and ocular health benefits. 10 Approximately 46% of soft contact lenses prescribed globally are daily disposable lenses.…”

Section: Introductionmentioning

confidence: 99%

Bibliometric analysis of the literature relating to silicone hydrogel and daily disposable contact lenses

Efron

Jones

Morgan

et al. 2022

Journal of Optometry

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Purpose Publication metrics are derived for the fields of silicone hydrogel (SH) and daily disposable (DD) contact lenses. Methods A search of the Scopus database for papers in the fields of SH and DD contact lenses found 979 SH and 291 DD papers. Subject-specific h-indices for SH lenses (h SH -index) and DD lenses (h DD -index) were derived, in relation to five categories – authors, institutions, countries and journals – to serve as measures of impact. A short list of the most impactful entities was generated for each of the above five categories in the SH and DD fields. Results A paper entitled “Soft contact lens polymers: An evolution” by Nicholson and Vogt was the most highly cited article (495 citations) in both SH and DD fields. The most impactful entities for the SH and DD fields were: authors – Lyndon Jones (h SH = 33) and Philip Morgan (h DD = 15); institutions – the University of Waterloo (h SH = 37) and the University of New South Wales (h DD = 15); countries – the United States (h SH = 45) and the United Kingdom (h DD = 24); and journals – Optometry and Vision Science (h SH = 33) and Contact Lens and Anterior Eye (h DD = 17). Overall, the SH field (h SH = 64) is far more impactful than the DD field (h DD = 34). Conclusions Impactful papers, authors, institutions, countries and journals in the SH and DD fields are identified. Optometry is revealed as the leading profession in relation to SH and DD publications.

show abstract

An investigation into disposal and recycling options for daily disposable and monthly replacement soft contact lens modalities

Cited by 20 publications

References 22 publications

Safety and Efficacy of a New Water Gradient Biomimetic Monthly Replacement Spherical Contact Lens Material (Lehfilcon A)

Safety and Efficacy of a New Water Gradient Biomimetic Monthly Replacement Spherical Contact Lens Material (Lehfilcon A)

How does the optometry profession move up a gear to tackle the problem of climate change?

Bibliometric analysis of the literature relating to silicone hydrogel and daily disposable contact lenses

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