Effect of rigid gas permeable lens on the tear film and visual quality in adolescents
10.3980/j.issn.1672-5123.2016.11.29
- VernacularTitle:配戴角膜塑形镜对青少年近视患者泪膜及视觉质量的影响
- Author:
Jiang, ZHU
;
Zhen-Ping, HUANG
- Publication Type:Journal Article
- Keywords:
rigid gas permeable;
tear film;
OQASII;
visual quality
- From:
International Eye Science
2016;16(11):2099-2102
- CountryChina
- Language:Chinese
-
Abstract:
AIM:To evaluate the effect of rigid gas permeable ( RGP ) lens on the tear film and the visual quality in adolescents with a double-pass system.
METHODS:This was a prospective study comprised 23 myopia patients ( 39 eyes ) wearing rigid gas permeable contact lens ( RGP ) between Jun. 2015 and Aug. 2015 in the Department of Ophthalmology of Jinling Hospital. Uncorrected visual acuity ( UCVA ) , sphere refractive, cylinder refractive, Schirmer I test, tear film break-up time ( BUT ) , the visual quality and the tear film quality with OQAS II were obtained before and 1wk, 1, 3, 6mo after wearing. The data was analyzed using t-test and One-way.
RESULTS:The UCVA in before and after 1wk, 1, 3, 6mo were 0. 23±0. 10, 0. 81±0. 23, 0. 99±0. 11, 1. 01±0. 09, 0. 95±0. 14, the difference was statistically significant ( F=723. 36, P<0.01). The sphere in before and after 1wk, 1, 3, 6mo were (-2. 83±1. 34) D, (-0. 63±0. 82) D, (-0. 12±0. 20) D, (-0. 03±0. 10 ) D, (-0. 10±0. 30 ) D respectively, the difference was statistically significant (F=107. 01, P<0. 01). The refractive cylinder in before and after 1wk, 1, 3, 6mo were (-0. 12±0. 21) D, (-0. 13±0. 22) D, (-0. 12±0. 21) D, (-0. 14±0. 26) D, (-0. 21±0. 27) D respectively, there was no significant difference before and after wearing RGP (F=2. 58, P>0. 05). Schirmer I test showed no statistically significant difference before and after wearing RGP ( F=4.88, P>0. 05). The stability of tear film was reduced after wearing RGP, and the difference was statistically significant (F=135. 11, P<0. 01). The modulate transfer function ( MTF ) cut- off frequency was reduced after wearing RGP, the object scatter index ( OSI ) was increased after wearing RGP, and the difference was statistically significant, the tear film quality OSI was increased after wearing RGP, and the difference was statistically significant (F=6. 16, 19. 23, 10. 62, P<0. 01).CONCLUSION:The UCVA is significantly increased after wearing RGP. However, there was no significant change in the base-line of tear secretion, but BUT is significantly reduced after wearing RGP. The stability of the tear film is reduced, which can lead to a decline in visual quality.
