Eye & contact lens · 2015
Prominent Decrease of Tear Meniscus Height With Contact Lens Wear and Efficacy of Eye Drop Instillation.
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Nagahara Yukiko, Koh Shizuka, Maeda Naoyuki, Nishida Kohji, Watanabe Hitoshi
Аннотация
OBJECTIVE: To investigate the change in tear meniscus height (TMH) before and after wearing soft contact lenses (CLs) of different water contents (WCs) and the influence of eye drop instillation on TMH during CL wear.
METHODS: Tear meniscus heights were measured using anterior segment optical coherence tomography in 20 normal subjects wearing a high-WC CL (WC, 69%) in 1 eye and a low-WC CL (WC, 24%) in the other. Tear meniscus height change after eye drop instillation with 3% diquafosol ophthalmic solution or saline with CL wear was evaluated at 5, 15, 30, and 60 min after instillation.
RESULTS: A significant decrease in TMH was observed after lens insertions of both CLs. Tear meniscus height was significantly decreased with high-WC CL wear compared with that with low-WC CL wear. With high-WC CL wear, TMH increased significantly (P<0.001) at 5 min after the instillation of 3% diquafosol ophthalmic solution compared with the baseline values and then returned to the pre-instillation level. No significant TMH changes were found with the instillation of either eye drop (diquafosol or saline) with low-WC CL wear.
CONCLUSIONS: Tear meniscus height decreased with CL wear, especially with high-WC CL wear. Significant increases in TMH were observed at 5 min after the instillation of diquafosol ophthalmic solution with high-WC CL wear. The increases in TMH after diquafosol instillation tended to be greater than those after saline instillation at least for 30 min with both high-WC and low-WC CLs.
METHODS: Tear meniscus heights were measured using anterior segment optical coherence tomography in 20 normal subjects wearing a high-WC CL (WC, 69%) in 1 eye and a low-WC CL (WC, 24%) in the other. Tear meniscus height change after eye drop instillation with 3% diquafosol ophthalmic solution or saline with CL wear was evaluated at 5, 15, 30, and 60 min after instillation.
RESULTS: A significant decrease in TMH was observed after lens insertions of both CLs. Tear meniscus height was significantly decreased with high-WC CL wear compared with that with low-WC CL wear. With high-WC CL wear, TMH increased significantly (P<0.001) at 5 min after the instillation of 3% diquafosol ophthalmic solution compared with the baseline values and then returned to the pre-instillation level. No significant TMH changes were found with the instillation of either eye drop (diquafosol or saline) with low-WC CL wear.
CONCLUSIONS: Tear meniscus height decreased with CL wear, especially with high-WC CL wear. Significant increases in TMH were observed at 5 min after the instillation of diquafosol ophthalmic solution with high-WC CL wear. The increases in TMH after diquafosol instillation tended to be greater than those after saline instillation at least for 30 min with both high-WC and low-WC CLs.