调整角膜接触镜参数改善矢高不足治疗角膜损伤1例
Adjustment of contact lens parameters to improve insufficient sagittal height for treatment of corneal injury: a case report
摘要 1例双眼近视眼配戴单光框架眼镜视物不清3年的14岁女性患者就诊于湘南学院第一附属医院眼科。鉴于患者矫正视力良好,近视度数增长较快,无显性斜视,融合功能和立体视觉良好,给予角膜塑形镜治疗。戴镜1个月后出现角膜中央2级点状染色,给予定位弧降低0.25 D、增加环曲量、反转弧矢高增加20 μm、周边弧增加1档的镜片参数调整。改善配适情况后,患者角膜点状染色消退,裸眼视力提升至1.0,戴镜8个月眼轴长度回退0.18~0.27 mm。
Abstract:
A 14-year-old female patient presented to the Department of Ophthalmology, the First Affiliated Hospital of Xiangnan University with a 3-year history of blurred vision while wearing single-vision spectacles for bilateral myopia. The patient demonstrated satisfactory corrected visual acuity, rapid myopia progression, no manifest strabismus, and well-preserved fusional function and stereopsis; therefore, orthokeratology was administered. Grade 2 central corneal staining developed at one month. Lens parameters were adjusted to optimize the fitting: the power of the alignment curve was reduced by 0.25 D, the toricity was increased, the sagittal depth of the reverse curve was raised by 20 μm, and the peripheral curve was upgraded by one step. Following these adjustments, the corneal staining resolved completely, and the uncorrected visual acuity improved to 1.0. After eight months of lens wear, the axial length regressed by 0.18 to 0.27 mm.