AIM: To record aberrations with a corneal topographic device on the anterior surface of the cornea at different time-points prior to wearing and following discontinued use of rigid gas permeable (RGP) contact lenses. ...AIM: To record aberrations with a corneal topographic device on the anterior surface of the cornea at different time-points prior to wearing and following discontinued use of rigid gas permeable (RGP) contact lenses. The effect of wearing RGP on the anterior surface of the cornea was discussed to provide guidance for clinical refractive error correction.METHODS: The study objects were 24 eyes from 24 patients. All patients underwent identical examination procedures prior to lens use, as well as afterwards, including slit-lamp examination, non-contact tonometer measurement, computer optometry and corneal curvature measurement, subjective refraction test, and corneal topography analysis. The patients wore contact lenses everyday for 1 month and then discontinued. Corneal topographies were recorded at certain time points of 30 minutes, 1 day, 3, 7 and 14 days following use.RESULTS: Total corneal aberration at each time point following discontinued use of RGP contact lenses was less than the time point prior to use. Detailed results were as follows: root mean square (RMS) (pre)=(1.438± 0.328)μm, RMS (30 minutes) =(1.076 ±0.355)μm, RMS (1 day) =(1.362 ±0.402)μm, RMS (3 days) =(1.373 ±0.398)μm, RMS (7 days) =(1.387 ±0.415)μm, and RMS (14 days) = (1.430±0.423)μm. Results showed that at 30 minutes after discontinued use of RGP contact lenses, almost all 2 ndand 3 rd-order aberrations change. Quadrafoil Z10 and spherical Z12 of the 4 th-order were also changed. Alterations to Z5, Z6, and Z12 at 1 day after discontinued use were significant differences compared with the time period prior to RGP use: Z5 and Z6 decreased, and Z12 increased slightly. Z5 and Z6 remained decreased at 3 days after discontinued use, but Z9 and Z10 continued to increase and Z12 returned to levels prior to RGP use. At 14 days after discontinued use, all aberrations were notsignificantly different from the values prior to use.CONCLUSION: The use RGP contact lenses greatly reduced total aberration of the anterior surface of the cornea. Changes to 2 ndand 3 rd-order aberrations (including Z3, Z4, Z5, Z6, Z7, and Z8) were more significant. Following discontinued use of RGP contact lenses, the majority of lower order aberrations returned to original levels in a short period of time. During this process, a transient higher order aberration appeared, but all changes disappeared within 14 days after discontinued use of RGP contact lenses.展开更多
AIMTo determine the impact of rigid gas permeable (RGP) and silicone-hydrogel keratoconus lenses on the quality of life (QoL) in keratoconus (KCN) patients using the self-reported results from the Contact Lens Impact ...AIMTo determine the impact of rigid gas permeable (RGP) and silicone-hydrogel keratoconus lenses on the quality of life (QoL) in keratoconus (KCN) patients using the self-reported results from the Contact Lens Impact on Quality of Life (CLIQ) Questionnaire.METHODSFrom January 2013 to April 2013, 27 consecutive KCN patients who wore RGP contact lenses (conflexair100 UV KE Zeiss-Wöhlk) or soft silicone-hydrogel contact lenses (SHCLs) for KCN (KeraSoft IC- Bausch&Lomb or Hydrocone Toris K-Swiss lens) completed the CLIQ questionnaire.RESULTSThe mean age of 27 patients was 29.6±8.0y. Fifteen patients were RGP user. The groups were comparable with respect to the mean patient age, sex, and mean K values (P=0.1, P=0.8 and P=0.1, respectively). The mean CLIQperson measure was 42.8±5.5 in RGP group and 39.6±5.5 in SHCLs for KCN group (P=0.06). CLIQperson measure was positively correlated with steep K value (r=0.301, P=0.04). When eyes were stratified by visual acuity with contact lenses, the mean CLIQperson measure was 42.01±5.6 in eyes with a visual acuity of 20/20-20/25 (n=44) and 38.4±5.26 in eyes with a visual acuity of 20/32 or less (n=10; P=0.097).CONCLUSIONRGP lenses and SHCLs for KCN have similar impact on QoL.展开更多
The prevalence of keratoconus is 1/2000 in the general population and is high in adolescents.Keratoconus is a progressive disease,which has a great impact on patients’quality of life and mental health.It can be manag...The prevalence of keratoconus is 1/2000 in the general population and is high in adolescents.Keratoconus is a progressive disease,which has a great impact on patients’quality of life and mental health.It can be managed by surgical and non-surgical means,rigid gas permeable(RGP)contact lens as its main non-surgical method is widely used in clinic.The efficacy of wearing RGP contact lens has been confirmed to some extent,but some studies have found that wearing RGP contact lens has adverse effects,which may promote disease progression.In this paper,the advantages and disadvantages of RGP contact lens in controlling keratoconus were reviewed to provide more suggestions and references for the clinical application of RGP contact lens.展开更多
AIM: To evaluate the effect of rigid gas permeable contact lens(RGP-CL) on corneal morphological parameters and vision-related quality of life in keratoconus(KC) patients.METHODS: Totally 57 eyes of 30 KC patients who...AIM: To evaluate the effect of rigid gas permeable contact lens(RGP-CL) on corneal morphological parameters and vision-related quality of life in keratoconus(KC) patients.METHODS: Totally 57 eyes of 30 KC patients who were followed-up for more than two years, including 17 RGP wearers(32 eyes) and 13 non-wearers(25 eyes) were retrospectively analyzed. Initial medical history and corneal topography were collected at baseline. Corneal topography, corneal aberration, optical coherence tomography, and vision-related quality of life questionnaires were performed at the last follow-up.RESULTS: According to corneal topography, increase of the flattest keratometric values was higher in RGP wearers than in non-wearers(P=0.038). The morphological parameters, including symmetry index of front corneal curvature(P=0.004) and Baiocchi-Calossi-Versaci index front(P=0.047), were lower in RGP wearers than in nonwearers. Vertical coma was smaller in RGP wearers than non-wearers in 3.0, 5.0, 6.0, and 7.0 mm pupil diameters, respectively(P<0.05). The environmental triggering domain of ocular surface disease index was worse in RGP wearers as compared to non-wearers(P=0.003). At the last followup, there were no significant differences in constituent ratios of KC progression, corneal thickness topography, epithelial thickness topography, morphological parameters of corneal topography, and other questionnaire scores between the two groups(all P>0.05).CONCLUSION: Long-term use of RGP does not worsen KC but may cause corneal epithelial remodeling to increase symmetry of corneal anterior surface, reduce corneal vertical coma and improve visual quality. However, RGP wearing causes a slight decrease in vision-related quality of life. The occurrence of ocular surface symptoms is mainly associated with environmental triggering factors.展开更多
目的总结婴幼儿白内障术后验配硬性透气性角膜接触镜(rigid gas permeable contact lens,RGP)的安全性、有效性和验配方法。方法对2019年11月至2021年12月至本院就诊的5名婴幼儿白内障患者共6只眼进行回顾性分析,所有患者均在白内障摘...目的总结婴幼儿白内障术后验配硬性透气性角膜接触镜(rigid gas permeable contact lens,RGP)的安全性、有效性和验配方法。方法对2019年11月至2021年12月至本院就诊的5名婴幼儿白内障患者共6只眼进行回顾性分析,所有患者均在白内障摘除术后验配RGP,随访6个月。评估RGP更换周期和掉片情况,检测眼球震颤、视力等视功能指标,总结讨论镜片使用的诊治经验以及安全性和有效性。结果所有患者在配戴期间眼表情况健康;1例弃戴;掉片和换片周期为2.4~5.4个月/片;掉片频率1~3次/年;镜片移位频率3~4次/d;眼球震颤戴镜前为0~23次/min,随访后期眼球震颤基本消失;视力分别恢复至0.5(病例1戴镜,视动性眼球震颤仪)及0.2~0.67(戴镜后24周,自制近用单个视力卡)。结论RGP是一种安全且有效改善婴幼儿白内障术后视功能的方法,可进一步推广普及。提高验配技术、优化检测方法以及加强随访教育可提高RGP的临床效果,降低使用成本。展开更多
目的:研究硬性透氧性角膜接触镜(rigid gas permeable contact lens,RGP)对青少年复杂性屈光不正的矫正效果。方法:对51例90眼复杂屈光不正10～20岁的青少年患者给予验配RGP镜片,观察其矫正视力以及随访其并发症。结果:RGP镜片平均矫正...目的:研究硬性透氧性角膜接触镜(rigid gas permeable contact lens,RGP)对青少年复杂性屈光不正的矫正效果。方法:对51例90眼复杂屈光不正10～20岁的青少年患者给予验配RGP镜片,观察其矫正视力以及随访其并发症。结果:RGP镜片平均矫正视力为0.95±0.17,与框架眼镜平均矫正视力(0.39±0.11)相比,矫正视力有明显提高,差异有统计学意义(P<0.05)。所有病例均无严重并发症出现。结论:RGP镜片能有效提高复杂屈光不正患者的矫正视力,促进青少年视觉功能发育。展开更多
目的探讨6岁以下高度近视儿童配戴硬性透气性角膜接触镜(rigid gas permeable contact lens,RGPCL)2a的临床应用效果。方法在角膜地形图指导下对16例(32眼)3～6岁高度近视儿童进行RGPCL配戴,观察患儿的RGPCL配戴和适应情况,比较最佳框...目的探讨6岁以下高度近视儿童配戴硬性透气性角膜接触镜(rigid gas permeable contact lens,RGPCL)2a的临床应用效果。方法在角膜地形图指导下对16例(32眼)3～6岁高度近视儿童进行RGPCL配戴,观察患儿的RGPCL配戴和适应情况,比较最佳框架眼镜和RGPCL矫正视力。随访2a观察并发症的发生情况、屈光度发展及视力提高情况。结果配戴框架眼镜矫正视力与RGPCL比较差异有统计学意义(t=-4.558,P<0.05);配戴RGPCL2a前后矫正视力差异有统计学意义(t=6.027,P<0.05),2a后屈光度增长(-0.17±0.42)D、眼轴长度增长(0.07±0.02)mm。所有患儿均1次配戴成功,配戴试戴镜5min后患儿能正常视物、玩耍,1周内均能适应全天日戴。随访期间,1例患儿因家长没有时间为孩子配戴而弃戴,其余均能日戴,镜片需患儿家长清洗、为患儿配戴,5例患儿能独立摘镜片;所有病例均未发现角膜缘新生血管,无角膜擦伤或角膜溃疡等严重并发症。结论近视性屈光参差及高度近视儿童配戴RGPCL矫正屈光不正安全、有效。展开更多
文摘AIM: To record aberrations with a corneal topographic device on the anterior surface of the cornea at different time-points prior to wearing and following discontinued use of rigid gas permeable (RGP) contact lenses. The effect of wearing RGP on the anterior surface of the cornea was discussed to provide guidance for clinical refractive error correction.METHODS: The study objects were 24 eyes from 24 patients. All patients underwent identical examination procedures prior to lens use, as well as afterwards, including slit-lamp examination, non-contact tonometer measurement, computer optometry and corneal curvature measurement, subjective refraction test, and corneal topography analysis. The patients wore contact lenses everyday for 1 month and then discontinued. Corneal topographies were recorded at certain time points of 30 minutes, 1 day, 3, 7 and 14 days following use.RESULTS: Total corneal aberration at each time point following discontinued use of RGP contact lenses was less than the time point prior to use. Detailed results were as follows: root mean square (RMS) (pre)=(1.438± 0.328)μm, RMS (30 minutes) =(1.076 ±0.355)μm, RMS (1 day) =(1.362 ±0.402)μm, RMS (3 days) =(1.373 ±0.398)μm, RMS (7 days) =(1.387 ±0.415)μm, and RMS (14 days) = (1.430±0.423)μm. Results showed that at 30 minutes after discontinued use of RGP contact lenses, almost all 2 ndand 3 rd-order aberrations change. Quadrafoil Z10 and spherical Z12 of the 4 th-order were also changed. Alterations to Z5, Z6, and Z12 at 1 day after discontinued use were significant differences compared with the time period prior to RGP use: Z5 and Z6 decreased, and Z12 increased slightly. Z5 and Z6 remained decreased at 3 days after discontinued use, but Z9 and Z10 continued to increase and Z12 returned to levels prior to RGP use. At 14 days after discontinued use, all aberrations were notsignificantly different from the values prior to use.CONCLUSION: The use RGP contact lenses greatly reduced total aberration of the anterior surface of the cornea. Changes to 2 ndand 3 rd-order aberrations (including Z3, Z4, Z5, Z6, Z7, and Z8) were more significant. Following discontinued use of RGP contact lenses, the majority of lower order aberrations returned to original levels in a short period of time. During this process, a transient higher order aberration appeared, but all changes disappeared within 14 days after discontinued use of RGP contact lenses.
文摘AIMTo determine the impact of rigid gas permeable (RGP) and silicone-hydrogel keratoconus lenses on the quality of life (QoL) in keratoconus (KCN) patients using the self-reported results from the Contact Lens Impact on Quality of Life (CLIQ) Questionnaire.METHODSFrom January 2013 to April 2013, 27 consecutive KCN patients who wore RGP contact lenses (conflexair100 UV KE Zeiss-Wöhlk) or soft silicone-hydrogel contact lenses (SHCLs) for KCN (KeraSoft IC- Bausch&Lomb or Hydrocone Toris K-Swiss lens) completed the CLIQ questionnaire.RESULTSThe mean age of 27 patients was 29.6±8.0y. Fifteen patients were RGP user. The groups were comparable with respect to the mean patient age, sex, and mean K values (P=0.1, P=0.8 and P=0.1, respectively). The mean CLIQperson measure was 42.8±5.5 in RGP group and 39.6±5.5 in SHCLs for KCN group (P=0.06). CLIQperson measure was positively correlated with steep K value (r=0.301, P=0.04). When eyes were stratified by visual acuity with contact lenses, the mean CLIQperson measure was 42.01±5.6 in eyes with a visual acuity of 20/20-20/25 (n=44) and 38.4±5.26 in eyes with a visual acuity of 20/32 or less (n=10; P=0.097).CONCLUSIONRGP lenses and SHCLs for KCN have similar impact on QoL.
基金Supported by the National Natural Science Foundation of China(No.81670837,No.81170828)the Tianjin Science&Technology Foundation(No.15JCZDJC35300)the Tianjin Health and Family Planning Communication Foundation(No.14KG133)。
文摘The prevalence of keratoconus is 1/2000 in the general population and is high in adolescents.Keratoconus is a progressive disease,which has a great impact on patients’quality of life and mental health.It can be managed by surgical and non-surgical means,rigid gas permeable(RGP)contact lens as its main non-surgical method is widely used in clinic.The efficacy of wearing RGP contact lens has been confirmed to some extent,but some studies have found that wearing RGP contact lens has adverse effects,which may promote disease progression.In this paper,the advantages and disadvantages of RGP contact lens in controlling keratoconus were reviewed to provide more suggestions and references for the clinical application of RGP contact lens.
文摘AIM: To evaluate the effect of rigid gas permeable contact lens(RGP-CL) on corneal morphological parameters and vision-related quality of life in keratoconus(KC) patients.METHODS: Totally 57 eyes of 30 KC patients who were followed-up for more than two years, including 17 RGP wearers(32 eyes) and 13 non-wearers(25 eyes) were retrospectively analyzed. Initial medical history and corneal topography were collected at baseline. Corneal topography, corneal aberration, optical coherence tomography, and vision-related quality of life questionnaires were performed at the last follow-up.RESULTS: According to corneal topography, increase of the flattest keratometric values was higher in RGP wearers than in non-wearers(P=0.038). The morphological parameters, including symmetry index of front corneal curvature(P=0.004) and Baiocchi-Calossi-Versaci index front(P=0.047), were lower in RGP wearers than in nonwearers. Vertical coma was smaller in RGP wearers than non-wearers in 3.0, 5.0, 6.0, and 7.0 mm pupil diameters, respectively(P<0.05). The environmental triggering domain of ocular surface disease index was worse in RGP wearers as compared to non-wearers(P=0.003). At the last followup, there were no significant differences in constituent ratios of KC progression, corneal thickness topography, epithelial thickness topography, morphological parameters of corneal topography, and other questionnaire scores between the two groups(all P>0.05).CONCLUSION: Long-term use of RGP does not worsen KC but may cause corneal epithelial remodeling to increase symmetry of corneal anterior surface, reduce corneal vertical coma and improve visual quality. However, RGP wearing causes a slight decrease in vision-related quality of life. The occurrence of ocular surface symptoms is mainly associated with environmental triggering factors.
文摘目的总结婴幼儿白内障术后验配硬性透气性角膜接触镜(rigid gas permeable contact lens,RGP)的安全性、有效性和验配方法。方法对2019年11月至2021年12月至本院就诊的5名婴幼儿白内障患者共6只眼进行回顾性分析,所有患者均在白内障摘除术后验配RGP,随访6个月。评估RGP更换周期和掉片情况,检测眼球震颤、视力等视功能指标,总结讨论镜片使用的诊治经验以及安全性和有效性。结果所有患者在配戴期间眼表情况健康;1例弃戴;掉片和换片周期为2.4~5.4个月/片;掉片频率1~3次/年;镜片移位频率3~4次/d;眼球震颤戴镜前为0~23次/min,随访后期眼球震颤基本消失;视力分别恢复至0.5(病例1戴镜,视动性眼球震颤仪)及0.2~0.67(戴镜后24周,自制近用单个视力卡)。结论RGP是一种安全且有效改善婴幼儿白内障术后视功能的方法,可进一步推广普及。提高验配技术、优化检测方法以及加强随访教育可提高RGP的临床效果,降低使用成本。
文摘目的:研究硬性透氧性角膜接触镜(rigid gas permeable contact lens,RGP)对青少年复杂性屈光不正的矫正效果。方法:对51例90眼复杂屈光不正10～20岁的青少年患者给予验配RGP镜片,观察其矫正视力以及随访其并发症。结果:RGP镜片平均矫正视力为0.95±0.17,与框架眼镜平均矫正视力(0.39±0.11)相比,矫正视力有明显提高,差异有统计学意义(P<0.05)。所有病例均无严重并发症出现。结论:RGP镜片能有效提高复杂屈光不正患者的矫正视力,促进青少年视觉功能发育。
文摘目的探讨6岁以下高度近视儿童配戴硬性透气性角膜接触镜(rigid gas permeable contact lens,RGPCL)2a的临床应用效果。方法在角膜地形图指导下对16例(32眼)3～6岁高度近视儿童进行RGPCL配戴,观察患儿的RGPCL配戴和适应情况,比较最佳框架眼镜和RGPCL矫正视力。随访2a观察并发症的发生情况、屈光度发展及视力提高情况。结果配戴框架眼镜矫正视力与RGPCL比较差异有统计学意义(t=-4.558,P<0.05);配戴RGPCL2a前后矫正视力差异有统计学意义(t=6.027,P<0.05),2a后屈光度增长(-0.17±0.42)D、眼轴长度增长(0.07±0.02)mm。所有患儿均1次配戴成功,配戴试戴镜5min后患儿能正常视物、玩耍,1周内均能适应全天日戴。随访期间,1例患儿因家长没有时间为孩子配戴而弃戴,其余均能日戴,镜片需患儿家长清洗、为患儿配戴,5例患儿能独立摘镜片;所有病例均未发现角膜缘新生血管,无角膜擦伤或角膜溃疡等严重并发症。结论近视性屈光参差及高度近视儿童配戴RGPCL矫正屈光不正安全、有效。
