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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.


Related in: MedlinePlus

Effect of lighting conditions on contrast sensitivity
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f6: Effect of lighting conditions on contrast sensitivity

Mentions: In all age groups and at all spatial frequencies, binocular contrast sensitivity values were higher than monocular values (Figure 5), and contrast sensitivity was better in mesopic than photopic conditions (Figure 6). Contrast sensitivity was independent of age and pupil size in photopic conditions.


Factors Affecting Contrast Sensitivity in Healthy Individuals: A Pilot Study
Effect of lighting conditions on contrast sensitivity
© Copyright Policy - open-access
Related In: Results  -  Collection

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

f6: Effect of lighting conditions on contrast sensitivity
Mentions: In all age groups and at all spatial frequencies, binocular contrast sensitivity values were higher than monocular values (Figure 5), and contrast sensitivity was better in mesopic than photopic conditions (Figure 6). Contrast sensitivity was independent of age and pupil size in photopic conditions.

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.


Related in: MedlinePlus