Brown B, Yap M K, Fan W C
Department of Optometry and Radiography, Hong Kong Polytechnic, Hung Hom.
Ophthalmic Physiol Opt. 1993 Apr;13(2):138-42. doi: 10.1111/j.1475-1313.1993.tb00442.x.
We measured stereoacuity in 41 subjects with normal Snellen acuity in each eye, and normal ocular health. Patients were measured in each of the age ranges 21-28, 41-49, 51-59 and 60-70 years. Stereoacuity was reduced from about 16 sec arc for the three younger groups to about 27 sec arc for the older subjects. Since stereopsis has a cortical neural substrate, these data suggest that there may be cortical changes affecting the interaction of information from the two eyes with advancing age, but whether these changes result from loss of contrast sensitivity, instability of ocular alignment or binocular stress, all of which have been reported in elderly subjects, is not known.
我们测量了41名双眼视力正常且眼部健康的受试者的立体视锐度。这些患者分属21 - 28岁、41 - 49岁、51 - 59岁和60 - 70岁这几个年龄组。对于三个较年轻的年龄组，立体视锐度约为16秒弧度，而对于年龄较大的受试者，立体视锐度降至约27秒弧度。由于立体视觉有皮质神经基础，这些数据表明，随着年龄增长，可能存在影响双眼信息交互的皮质变化，但这些变化是否由对比敏感度下降、眼位不稳定或双眼压力导致（所有这些情况在老年受试者中均有报道）尚不清楚。
