摘要
目的:探讨在角膜地形图相关参数引导下快速、准确地验配硬性透气性(RGP)圆锥角膜接触镜的方法。方法:根据角膜地形图的中央角膜曲率值及A值(中央与旁中央3 mm区角膜曲率值之差),为14例(23眼)圆锥角膜患者选择诊断片并在裂隙灯下进行荧光素染色配戴评估,确定处方,定期复查最好矫正视力、角膜地形、眼部健康和主觉症状。结果:18眼(18/23,78.3%)通过1~2片诊断片试戴成功。配戴圆锥角膜镜后,矫正视力≥1.0的眼数为18眼,平均视力增加3行,眩光现象明显改善8人(8/14,57.1%),视物变形症状明显改善10人(10/14,71.4%)。随访4~64m,未发现角膜曲率和角膜散光明显改变,未发现明显眼部并发症。结论:利用角膜地形图相关参数可明显提高圆锥角膜验配的效率。国锥角膜镜片明显改善轻度、中度及部分重度圆锥角膜眼的矫正视力、舒适性和镜片稳定性,正确的验配对角膜生理功能无明显影响。
Objective:To investigate efficiency and accuracy of rigid gas permeable(RGP) contact lens for keratoconus guided by topography. Methods: According to topographical central keratometry reading(K-reading) and A value(the difference of K-reading between centre and 3 mm apart), a diagnostic RGP contact lens was determined and fluorescein patterns were evaluated. Best corrected visual acuity ( BCVA) , topography, ocular physiology and subjective symptoms were assessed by follow-up 6 - 64 months. Results: 14 keratoconus patienls(23 eyes) fitted RGP contact lens, 18 eyes(18/23,78.3% ) were fitted successfully by used 1-2 diagnostic lenses. 18 eyes have BCVA ≥1. 0.8 patients'(8/14,57.1%) glare senses were improved. No significant complications happened during the follow up visits. Conclusion:The efficiency of contact lens fitting for keratoconus is increased when guided by topography. RGP contact lens improve the BCVA, comfort and lens stability for most of the keratoconus.
出处
《眼视光学杂志》
2003年第3期160-162,共3页
Chinese Journal of Optometry & Ophthalmology