Human Visual Spatio-Temporal Frequency Performance as a Function of Age

Disclosing disease mechanisms with a spatio-temporal summation paradigm

“…A majority of research has reported that aging does not alter the summation area [5,19,22,24]. Given that previous research has demonstrated that age has little effect on sensitivity to low spatial frequencies [13,27,51] and sensitivity improves when the target is temporally modulated [30,49] as it was in our case, makes our findings consistent with this literature. On the other hand, Owsley and Sekuler [29] have suggested that aging preferentially reduces sensitivity to larger stimuli after consideration of optical factors.…”

Changes in Contrast Sensitivity Function and Ocular Higher Order Aberration by Conventional Myopic Photorefractive Keratectomy

“…Contrast sensitivity has been reported to be agerelated. [30][31][32] Wavefront aberration has also been reported to be a function of age. [33][34][35] In eyes after LASIK, Pop and Payette 9 reported that contrast sensitivity after surgery was dependent on patient age.…”

Contrast Sensitivity in Ocular Hypertension and Glaucoma

“…However, the ages of the pa tients in these studies were not mentioned [17,18], or the variation of the ages of the pa tients was very large [16]. As the contrast sen sitivity changes with age [4,19], the lower re sults in older patients could have been hidden in the mean of the results because of the better results of the younger age groups. In a normal population, the results in the Vistech test were considerably better in all of the younger age groups and in all of the cpd areas than in the 60-to 69-year-old group; for instance, in the cpd of 18 (target E), the 40-to 49-year-old normals had a mean result of 5.8 ± 0.9 com pared to 3.7 ± 0.9 in the 60-to 69-year-old nor mals [M. Mântyjârvi, unpubl.…”