Effects of Pigment Location in Tinted Contact Lenses on the Ocular Surface
| Autor: | Sun Hyup Han, Ji Won Jung, Eung Kweon Kim, Kyoung Yul Seo, Si Yoon Park, Tae Im Kim |
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| Rok vydání: | 2016 |
| Předmět: |
Adult
Male medicine.medical_specialty genetic structures Surface Properties Coloring agents 02 engineering and technology Materials testing law.invention Cornea 03 medical and health sciences 0302 clinical medicine law Ophthalmology Materials Testing medicine Humans Prospective Studies Coloring Agents Ocular inflammation business.industry Equipment Design 021001 nanoscience & nanotechnology Contact Lenses Hydrophilic eye diseases Lens (optics) medicine.anatomical_structure Conjunctival redness 030221 ophthalmology & optometry Optometry Female sense organs 0210 nano-technology business Ocular surface Conjunctiva |
| Zdroj: | Optometry and vision science : official publication of the American Academy of Optometry. 93(8) |
| ISSN: | 1538-9235 |
| Popis: | PURPOSE To evaluate the effects of the location of pigments in decorative tinted soft contact lenses on the ocular surface. METHODS Thirty test subjects were enrolled in this study. All subjects wore the following types of contact lenses, classified according to the location of the pigment layer, in one eye in three different testing sessions: conventional clear lenses, tinted lenses with a pigment layer embedded in the lens matrix, and tinted lenses with an exposed pigment layer on the surface. Tear samples were collected, the ocular surface status was evaluated, and subjective symptoms were surveyed after lens wear for 8 hours. RESULTS The tinted lenses with surface pigments resulted in a greater increase in epidermal growth factor and interleukin-8 levels compared with the clear lenses and tinted lenses with embedded pigments (p < 0.050). Ocular surface parameters and subjective symptom scores were significantly different among three lens types (p < 0.050), with the clear lenses showing superior results compared with the two tinted lenses (p < 0.050). The tinted lenses with exposed pigments resulted in a greater degree of conjunctival redness and ocular surface staining and poorer symptom scores compared with the tinted lens with embedded pigments (p < 0.050). CONCLUSIONS Our results suggest that the presence of surface pigments in tinted contact lenses increases ocular inflammation and results in a poorer ocular surface status and greater discomfort compared with clear lenses and tinted lenses with an embedded pigment layer. |
| Databáze: | OpenAIRE |
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