Influence of the tear film on optical quality of the eye
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Use of digital displays and ocular surface alterations: A review
2021, Ocular SurfaceCitation Excerpt :Several studies have reported a reduction in visual acuity (VA) [86] and contrast sensitivity [87], and an increase in glare disability in patients with DED [87]. Additionally, the tear film undergoes disruptions following a blink, leading to its break-up [84]. After a blink, the progressive irregularity in the thickness of the tear film over the ocular surface worsens its optical quality more and more.
A Review of the Compatibility of Topical Artificial Tears and Rewetting Drops with Contact Lenses
2020, Contact Lens and Anterior EyeIntroducing a novel in vivo method to access visual performance during dewetting process of contact lens surface
2020, Contact Lens and Anterior EyeCitation Excerpt :The tear film overlying a CL plays an important part in comfort and vision. A consistently wettable CL surface ensures a stable, lubricious tear film and enables good vision and comfort by reducing friction during blinking. [5,6] Optimal wettability of the CL front surface depends on several parameters, including material [7], individual blister solution [8] and lens care solution [9,10].
Mechanobiology of the corneal epithelium
2018, Experimental Eye ResearchVisual acuity and quality of life in dry eye disease: Proceedings of the OCEAN group meeting
2017, Ocular SurfaceCitation Excerpt :It is accompanied by increased osmolarity of the tear film and inflammation of the ocular surface [1,2]. The tear film is the first part of the ocular surface that light meets on the pathway to the retina, and the large refractive index step from the air to the tears means that the precorneal tear film has the greatest dioptric power of any optical interface of the eye [3,4]. Furthermore, the tear film compensates for the optical irregularity of the corneal epithelium surface, which is caused by the presence of numerous microvilli; without this compensation by the tear film, the quality of the transmitted light would be poor.
Objective and subjective assessing efficacy of a lubricating drop in eyes wearing silicone hydrogel contact lenses
2016, Journal of Current OphthalmologyCitation Excerpt :The tear film is the most important refractive surface of the eye. Owing to the high difference in refractive index at the air-tear interface, this surface is considered the cardinal refractive component of the eye.1 Any local or global disruption in the tear film can give rise to both optical (e.g. high order aberration increment) and pathological (e.g. ocular surface inflammations) problems in the eye.2–4