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KMID : 1011420190240040381
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Journal of Korean Ophthalmic Optics Society
2019 Volume.24 No. 4 p.381 ~ p.390
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Comparison of NIBUT and High Order Aberration between Two Different Contact Lens Materials
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Han Sun-Hee
Kim Bong-Hwan
Park Seon-Mi
Bong Su-Min
Lim Hee-Ji
Lee Byeong-Chang
Jeong Hyun-Ji
Song Seong-Yeon
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Abstract
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Purpose: To investigate the effects of the contact lens material on tear film stability and quality of vision by comparing the changes in the non-invasive tear break-up time (NIBUT) and high-order aberration before and after the contact lens use.
Methods: Twenty people were surveyed on their experience before and 20 min and six days after using HEMA and PC-Cbased cosmetic contact lenses, and the high-order aberration and NITBUT were measured, in that order. The use of artificial tear and other solutions to maintain the same environment among the subjects was limited to only a multipurpose solution.
Results: The overall satisfaction, initial use, and preference of PC-C-based lenses were higher than those of HEMA-like lenses. No correlations were found between the use of lens and sleep time, weariness, wetness, or general satisfaction.
However, the use of lens very highly correlated with the initial overall satisfaction and overall satisfaction six days later (t = 0.88, p = 0.00). The initial NITBUT decreased significantly after 20 min (PC-C: 5.73 s; HEMA: 4.79 s) and six days of use (PC-C: 5.68 s; HEMA: 6.35 s) compared to before the use (PC-C: 8.02 s; HEMA: 9.36 s). The average NITBUT also decreased after 20 min (PC-C: 8.99 s; HEMA: 7.55 s) and six days (PC-C: 8.26 s; HEMA: 9.10 s) of use compared to before the use (PC-C: 11.58 s; HEMA: 11.92 s). With both the materials, the high-order aberration of the entire eye decreased after 20 min (PC-C: 0.186; HEMA: 0.184) and six days (PC-C: 0.169; HEMA: 0.151) of use compared to before the use (PC-C: 0.190; HEMA: 0.192).
Conclusions: PC-C-based lenses showed better overall satisfaction and long NITBUT compared to HEMA-based lenses. The initial and average NITBUTs decreased after 20 min and six days of use. High-order aberration slightly decreased after 20 min and six days of use with both PC-C and HEMA materials.
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KEYWORD
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Cosmetic contact lens, Non-invasive tear film break-up time (NIBUT), High order aberration, HEMA contact lens, PC-C contact lens
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