最近发表在《英国眼科杂志》上的一项新研究发现了一种新的潜在近视光学干预方法。
中国温州医科大学的研究人员发现，与单光镜片相比，采用非球面微透镜的镜片在一年后能有效延缓近视进展和眼轴增长。此外，微透镜的非球面度越高，近视控制效果也越显著。
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带非球面微透镜的镜片在控制近视方面的1年疗效
摘要
目的：评估两种具有不同非球面度微透镜的新型近视控制眼镜镜片在1年内的有效性。
方法：将170名8至13岁、近视度数在−0.75 D至−4.75 D之间的学龄儿童随机分为三组，分别配戴高非球面小镜片（HAL）眼镜、轻度非球面小镜片（SAL）眼镜或单光眼镜（SVL）。 在基线时及每隔6个月测量散瞳自动验光（球镜等效屈光度[SER]）、眼轴长度（AL）和最佳矫正视力（BCVA）。在每次随访时均发放适应情况和依从性问卷。
Results: After 1 year, the mean changes in the SER (±SE) and AL (±SE) in the SVL group were −0.81±0.06 D and 0.36±0.02 mm. Compared with SVL, the myopia control efficacy measured using SER was 67% (difference of 0.53 D) for HAL and 41% (difference of 0.33 D) for SAL, and the efficacy measured using AL was 64% (difference of 0.23 mm) for HAL and 31% (difference of 0.11 mm) for SAL (all p<0.01). HAL resulted in significantly greater myopia control than SAL for SER (difference of 0.21 D, p<0.001) and AL (difference of 0.12 mm, p<0.001). The mean BCVA (−0.01±0.1 logMAR, p=0.22) and mean daily wearing time (13.2±2.6 hours, p=0.26) were similar among the three groups. All groups adapted to their lenses with no reported adverse events, complaints or discomfort.
结论：与标准视力镜片（SVL）相比，采用非球面微透镜的眼镜镜片能有效延缓近视进展和眼轴延长。微透镜的非球面度越高，近视控制效果越显著。