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Factors Affecting Contrast Sensitivity in Healthy Individuals: A Pilot Study

View Article: PubMed Central - PubMed

ABSTRACT

Objectives:: To determine the demographic and ocular features affecting contrast sensitivity levels in healthy individuals.

Materials and methods:: Seventy-four eyes of 37 subjects (7-65 years old) with refractive errors less than 1.0 diopter, no history of ocular surgery, and 20/20 visual acuity were included in the study. The participants were divided by age into three groups: group 1, 7-19 years, n=11; group 2, 20-49 years, n=15; and group 3, 50-65 years, n=11. All subjects underwent anterior and posterior segment evaluation, intraocular pressure measurements, refraction measurements, and clinical evaluation for strabismus. Contrast static test was performed using Metrovision MonPack 3 vision monitor system after measuring pupil diameter. Photopic and mesopic measurements were taken sequentially from right eyes, left eyes, and both eyes together.

Results:: Contrast sensitivity at intermediate and high spatial frequencies was lower with increasing age. Binocular measurements were better than monocular, and mesopic measurements were better than photopic measurements at all spatial frequencies. Contrast sensitivity at higher spatial frequency was lower with hyperopic refraction values.

Conclusion:: Increasing age, small pupil diameter, hyperopia, and photopic conditions were associated with lower contrast sensitivity in healthy individuals. Binocular contrast sensitivity measurements were better than monocular contrast sensitivity measurements in all conditions and spatial frequencies.

No MeSH data available.


Binocular contrast sensitivity curves by age group
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f2: Binocular contrast sensitivity curves by age group

Mentions: Mean ages of the groups were 11.45±3.55 years for group 1, 35.66±7.62 years for group 2, and 57.09±4.48 years for group 3. Changes between the photopic/mesopic and monocular/binocular contrast sensitivity curves in the age groups are shown in Figure 1 and Figure 2.


Factors Affecting Contrast Sensitivity in Healthy Individuals: A Pilot Study
Binocular contrast sensitivity curves by age group
© Copyright Policy - open-access
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC5384124&req=5

f2: Binocular contrast sensitivity curves by age group
Mentions: Mean ages of the groups were 11.45±3.55 years for group 1, 35.66±7.62 years for group 2, and 57.09±4.48 years for group 3. Changes between the photopic/mesopic and monocular/binocular contrast sensitivity curves in the age groups are shown in Figure 1 and Figure 2.

View Article: PubMed Central - PubMed

ABSTRACT

Objectives:: To determine the demographic and ocular features affecting contrast sensitivity levels in healthy individuals.

Materials and methods:: Seventy-four eyes of 37 subjects (7-65 years old) with refractive errors less than 1.0 diopter, no history of ocular surgery, and 20/20 visual acuity were included in the study. The participants were divided by age into three groups: group 1, 7-19 years, n=11; group 2, 20-49 years, n=15; and group 3, 50-65 years, n=11. All subjects underwent anterior and posterior segment evaluation, intraocular pressure measurements, refraction measurements, and clinical evaluation for strabismus. Contrast static test was performed using Metrovision MonPack 3 vision monitor system after measuring pupil diameter. Photopic and mesopic measurements were taken sequentially from right eyes, left eyes, and both eyes together.

Results:: Contrast sensitivity at intermediate and high spatial frequencies was lower with increasing age. Binocular measurements were better than monocular, and mesopic measurements were better than photopic measurements at all spatial frequencies. Contrast sensitivity at higher spatial frequency was lower with hyperopic refraction values.

Conclusion:: Increasing age, small pupil diameter, hyperopia, and photopic conditions were associated with lower contrast sensitivity in healthy individuals. Binocular contrast sensitivity measurements were better than monocular contrast sensitivity measurements in all conditions and spatial frequencies.

No MeSH data available.