Article
Influence of replacement schedule and care regimen on patient comfort and satisfaction with daily wear frequent-replacement contact lenses.
CHU of Bordeaux, France.
The CLAO journal: official publication of the Contact Lens Association of Ophthalmologists, Inc
08/2002;
28(3):124-7.
pp.124-7
Source: PubMed
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Citations (0)
- Cited In (1)
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Article: In vitro analysis of the physical properties of contact lens blister pack solutions.
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ABSTRACT: Since the initial development of silicone hydrogels, many modifications to the bulk and surface properties of the lenses have been undertaken to improve the wettability and comfort of the lenses. Recently, manufacturers have incorporated various "wetting agents" or surface-active agents into the blister packaging solutions (BPSs) of the lenses to improve initial comfort of the lens on eye. The purpose of this study was to measure and compare the pH, surface tension (ST), viscosity, and osmolality of BPSs for a variety of silicone hydrogel and polyHEMA-based hydrogel lenses. In addition, two saline solutions were tested for comparison purposes. The pH, osmolality, ST, and viscosity were measured for the BPSs for lotrafilcon B and lotrafilcon A and lotrafilcon B with a "modified BPS" (m-lotrafilcon A, m-lotrafilcon B) (CIBA Vision, Duluth, GA); balafilcon A (Bausch & Lomb, Rochester, NY); galyfilcon A, senofilcon A, and narafilcon A (Johnson & Johnson, Jacksonville, FL); and comfilcon A and enfilcon A (CooperVision, Pleasanton, CA) and BPSs from two conventional polyHEMA-based materials-etafilcon A (Johnson & Johnson) and omafilcon A (CooperVision). The two saline solutions tested were Unisol (Alcon, Fort Worth, TX) and Softwear Saline (CIBA Vision). The pH results for the two saline solutions and all BPSs remained in the pH range of tears (6.6-7.8). The ST of the modified BPS was significantly lower (p < 0.01) than the original non-modified BPS. Viscosity measurements ranged between 0.90 and 1.00 cP for all BPSs and saline solutions, except for the modified BPS, which had significantly higher viscosities (p < 0.001). Osmolality measurements were not significantly different (p > 0.05) between BPSs made by the same manufacturer but were significantly different compared with BPSs made by different manufacturers (p < 0.05). The incorporation of wetting agents and surfactants into BPSs does alter the physical properties of the BPSs, which may have clinical implications regarding initial in-eye comfort.Optometry and vision science: official publication of the American Academy of Optometry 12/2010; 88(4):493-501. · 1.53 Impact Factor
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Keywords
1-month prospective observational clinical study
2 weeks
313 ophthalmologic practices
957 novice users
care regimen
COMPLETE brand multipurpose solution
effects replacement schedule
frequent-replacement contact lenses
lens fit
multipurpose care system incorporating ingredients
ocular physiological status
patient satisfaction
prescribed soft contact lenses
prescribing contact lenses
previous lenses
subjective satisfaction ratings
test lenses
test products
use ACUVUE 2
various subjective attributes