Sağlıklı Bireylerde Kontrast Duyarlık Düzeylerini Etkileyen Faktörler: Ön Çalışma
Küçük Resim Yok
Tarih
2017
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Cilt Başlığı
Yayıncı
Erişim Hakkı
info:eu-repo/semantics/openAccess
Özet
Amaç: Sağlıklı bireylerde, kontrast duyarlık düzeylerini etkileyen demografik ve oküler özellikler ile test ortamına ilişkin faktörleri belirlemekGereç ve Yöntem: Çalışmamıza 1,0 diyoptriden büyük refraksiyon kusuru bulunmayan, tam gören, oküler cerrahi geçirmemiş, 7-65 yaş aralığındaki 37 olgunun 74 gözü dahil edildi. Katılımcılar yaş gruplarına göre 3 gruba ayrıldı (grup 1: 7-19 yaş, 11 olgu; grup 2: 20-49 yaş, 15 olgu; grup 3: 50-65 yaş, 11 olgu). Olgulara, ön ve arka segment muayenesi, göz içi basınç ölçümü, refraksiyon ölçümü ve şaşılık muayenesi yapıldı. Pupilla çapları ölçülen olgulara Metrovision MonPack 3 vision monitor sistemi kullanılarak kontrast statik testi uygulanıldı. Önce fotopik, sonra mezopik koşullarda sağ ve sol göze ayrı ayrı, ayrıca her iki göz açık iken kontrast duyarlılık testi yapıldı. Bulgular: Yaş arttıkça orta ve yüksek uzaysal frekanslardaki kontrast duyarlığın azalmakta olduğu görüldü. Binoküler kontrast duyarlık ölçümleri, monoküler ölçümlerden, karanlık ortamda alınan kontrast duyarlık ölçümleri aydınlık ortamdakilerden, tüm uzaysal frekanslarda daha yüksek bulundu. Çalışma grubumuzda yer alan düşük refraksiyon kusuru aralığında, hipermetropiye kaydıkça yüksek uzaysal frekanslardaki kontrast duyarlığın azaldığı görüldü.Sonuç: Sağlıklı bireylerde yüksek yaş, küçük pupilla, hipermetropik refraksiyon, yüksek aydınlatmalı test ortamı kontrast duyarlığı azaltmaktadır. Binoküler kontrast duyarlık düzeyleri, her test ortamında ve her uzaysal frekansta monoküler kontrast duyarlıktan yüksektir.
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.
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.
Açıklama
Anahtar Kelimeler
Göz Hastalıkları
Kaynak
Türk Oftalmoloji Dergisi
WoS Q Değeri
Scopus Q Değeri
Cilt
47
Sayı
2
