Tear film, contact lenses and tear biomarkers
نویسندگان
چکیده
منابع مشابه
Tear film surface quality with rigid and soft contact lenses.
OBJECTIVES The aim of this study was to measure tear film surface quality (TFSQ) using dynamic high-speed videokeratoscopy during short-term (8 hrs) use of rigid and soft contact lenses. METHODS A group of 14 subjects wore 3 different types of contact lenses on 3 different nonconsecutive days (order randomized) in 1 eye only. The subjects were screened to exclude those with dry eye. The lense...
متن کاملTear exchange and contact lenses: a review.
Tear exchange beneath a contact lens facilitates ongoing fluid replenishment between the ocular surface and the lens. This exchange is considerably lower during the wear of soft lenses compared with rigid lenses. As a result, the accumulation of tear film debris and metabolic by-products between the cornea and a soft contact lens increases, potentially leading to complications. Lens design inno...
متن کاملTear flow under hydrogel contact lenses.
The tear replenishment rate under three different hydrogel lenses was determined with a slit lamp modified to serve as a fluorophotometer. Fractional tear volume replenishment rates under these lenses averaged 0.011 per blink, which is significantly lower than the 0.10 to 0.20 per blink reported for rigid lenses. These data suggest that the amount of oxygen delivered to the cornea by tear pumpi...
متن کاملTear film inflammatory mediators during continuous wear of contact lenses and corneal refractive therapy.
OBJECTIVES To study changes in tear film inflammatory mediators following continuous wear of silicone-hydrogel lenses and corneal refractive therapy with reverse geometry contact lenses. DESIGN A prospective, case-control study. METHODS Twenty-eight subjects had worn silicone-hydrogel lenses on a 30-night continuous wear basis. Thirty-two subjects had worn corneal refractive therapy lenses ...
متن کاملUpper and lower tear menisci on contact lenses.
PURPOSE The purpose of this study was to measure upper and lower tear menisci on contact lenses using real time optical coherence tomography (OCT). METHODS Both eyes of 20 adapted contact lens wearers were imaged when they wore two types of silicone hydrogel lenses, balafilcon A on one eye and galyfilcon A on the other eye. The height, radius, and area of upper and lower tear menisci were obt...
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ژورنال
عنوان ژورنال: Clinical and Experimental Optometry
سال: 2019
ISSN: 0816-4622,1444-0938
DOI: 10.1111/cxo.12918