Factors Affecting Contrast Sensitivity in Healthy Individuals: A Pilot Study
Journal Title: TÜRK OFTALMOLOJİ DERGİSİ - Year 2017, Vol 47, Issue 2
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.
Authors and Affiliations
Arzu Seyhan Karatepe, Süheyla Köse, Sait Eğrilmez
Keywords
Related Articles
- EP ID EP236367
- DOI 10.4274/tjo.93763
- Views 123
- Downloads 0
Optik Disk Pit Makülopatisinin Spontan Rezolüsyonu
.
Romatoid Artritli Hastalarda Kornea, Sklera, Koroid ve Fovea Kalınlıkları
Amaç: Romatoid artritli (RA) kadın hastalarda kornea, sklera, koroid ve fovea kalınlıklarının ölçülmesi ve sağlam kontrol grubu ile kıyaslanması amaçlanmıştır. Gereç ve Yöntem: Bu çalışmaya RA olan kadın bireyler ve sağl...
Evaluation of Retinal Changes Using Optical Coherence Tomography in a Pediatric Case of Susac Syndrome
Susac syndrome is a rare occlusive vasculopathy affecting the retina, inner ear and brain. The cause is unknown, although it generally affects young women. This syndrome can be difficult to diagnose because its signs can...
Investigation of Dry Eye Symptoms in Lecturers by Ocular Surface Disease Index
Objectives: The aim of this study was to evaluate the prevalence of dry eye symptoms among lecturers. Materials and Methods: The study included 254 lecturers employed at Mersin University. The lecturers were selected by...
Limbal Kök Hücre Yetmezliği ve Tedavisinde Kök Hücre Nakli
Görme fonksiyonunun iyi olabilmesinin ilk koşulu, korneanın saydam olmasıdır. Korneanın saydam olabilmesi için ise diferansiyasyonunu tamamlamış yüzeyel hücrelerin dökülmesi ile sürekli yenilenen epitel tabakasının düzen...