论文部分内容阅读
目的通过观察+Gz对佩戴巩膜镜的影响,对巩膜镜在飞行状态下的稳定性做出初步评价。方法 4名(4眼)男性健康志愿者,平均年龄21.5岁,均存在-1.0 DS~-2.0 DS屈光不正,配戴巩膜镜,在载人离心机上进行+3 G_z、+5 G_z、+9 G_z各持续10 s试验。试验前后均分别行视力、VAS评分检查,试验后均行角膜荧光染色检查。并通过前节照相系统拍摄及测量+Gz前后巩膜镜相对角膜的位移情况,并进行分析。结果 4名受试者有3名完成了离心机+3 G_z 10 s、+5 G_z 10 s、+9 G_z 10 s实验,1名完成了离心机+3 G_z 10 s、+5 G_z 10 s实验。在+Gz前后巩膜镜均可良好地矫正受试者屈光不正的状态,且VAS评分均为1~2分,巩膜镜相对角膜的垂直最大位移距离在0.07~0.27 mm范围内,变化差异无统计学意义(P>0.05),试验后角膜荧光染色3名阴性、1名阳性,而阳性者戴镜前即存在角膜上皮点状粗糙。结论在+9 G_z加速度环境下配戴巩膜镜是安全的,可以良好地矫正配戴者屈光不正的状态,并有良好的舒适度,且不会损伤角膜。
Objective To observe the effect of + Gz on scleral mirror and evaluate the stability of scleral mirror in flight. Methods A total of 4 healthy volunteers (4 eyes), mean age 21.5 years old, all had -1.0 DS ~ -2.0 DS. The scleral mirror was worn with scleral mirrors. +3 G_z, +5 G_z, 9 G_z each continued 10 s test. Visual acuity was assessed before and after the test, VAS score examination, corneal fluorochrome examination after the test. The relative corneal displacement of the + Gz anterior and posterior scleral mirror were photographed and measured by the anterior section camera system and analyzed. Results Three of the four subjects completed the centrifuge +3 G_z 10 s, +5 G_z 10 s, +9 G_z 10 s experiments and one completed the centrifuge +3 G_z 10 s, +5 G_z 10 s experiment . Scleral mirror before and after + Gz can correct the state of refractive error, and the VAS score was 1 to 2 points, scleral relative corneal vertical maximum displacement within the range of 0.07 ~ 0.27 mm, no significant difference Statistical significance (P> 0.05), corneal fluorescence staining after the test three negative, one positive, while the positive wearing a mirror that corneal epithelial spots before the rough. Conclusion It is safe to wear the scleral lens in +9 G_z acceleration environment. It can well correct the wearer ’s refractive error and has good comfort without damaging the cornea.