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The Effects of Cheap Tinted Contact Lenses on Corneal Swelling and Ocular Surface Inflammation
Journal of the Korean Ophthalmological Society ; : 1888-1893, 2008.
Artículo en Coreano | WPRIM | ID: wpr-94372
ABSTRACT

PURPOSE:

To evaluate the effects of cheap tinted contact lenses on corneal swelling and ocular surface inflammation, compared to hydrogel and silicone hydrogel contact lenses.

METHODS:

Forty eyes of 20 New Zealand white rabbits were randomly assigned to 4 groups. Two types of tinted contact lenses, hydrogel lenses, and silicone hydrogel lenses were each applied to 10 rabbit eyes. Corneal thickness and tear lactate dehydrogenase (LDH) activity were measured at 1 and 4 days after contact lens wear, and the inflammation of ocular surface was scored at 4 days after contact lens wear. The internal surface of the cheap tinted lens was examined with a scanning electron microscope to compare the surface quality between the tinted and non-tinted area.

RESULTS:

Although the corneal swelling of the silicone hydrogel lens group was significantly lower than the other 3 lens groups after contact lens wear (p0.1). Tear LDH activity at 1 and 4 days after contact lens wear showed no significant difference among the 4 groups (p>0.29). The scores of ocular surface inflammation in the 2 tinted contact lens groups were greater than the hydrogel and silicone hydrogel lens groups (p=0.03). The scanning electron microscope revealed the internal surface of the tinted area in the tinted contact lens was coarse and irregular though the surface of the non-tinted area was relatively smooth.

CONCLUSIONS:

Regarding corneal swelling and tear LDH activity, the cheap tinted contact lenses used in Korea were not significantly different from the common hydrogel contact lenses. However, tinted contact lenses showed a greater tendency to provoke ocular surface inflammation than other lenses. The coarse and irregular surface of the tinted area in the tinted contact lens appears to play a role in provoking severe ocular surface inflammation.
Asunto(s)

Texto completo: Disponible Índice: WPRIM (Pacífico Occidental) Asunto principal: Siliconas / Lentes de Contacto / Hidrogeles / Electrones / Ojo / Inflamación / Corea (Geográfico) / L-Lactato Deshidrogenasa Límite: Animales País/Región como asunto: Asia Idioma: Coreano Revista: Journal of the Korean Ophthalmological Society Año: 2008 Tipo del documento: Artículo

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Texto completo: Disponible Índice: WPRIM (Pacífico Occidental) Asunto principal: Siliconas / Lentes de Contacto / Hidrogeles / Electrones / Ojo / Inflamación / Corea (Geográfico) / L-Lactato Deshidrogenasa Límite: Animales País/Región como asunto: Asia Idioma: Coreano Revista: Journal of the Korean Ophthalmological Society Año: 2008 Tipo del documento: Artículo