N95 MASKE KULLANIMININ RETİNA DAMAR DANSİTESİ ÜZERİNE ETKİSİNİN OPTİK KOHERENS TOMOGRAFİ ANJİYOGRAFİ İLE DEĞERLENDİRİLMESİ

Year 2023, Volume: 30 Issue: 3, 532 - 537, 23.09.2023

Sebile Çomçalı Uğur Yılmaz Raşit Kılıç Çiğdem Coşkun Cemal Çavdarlı Mehmet Numan Alp

https://doi.org/10.17343/sdutfd.1346713

Abstract

Amaç
Sağlık çalışanlarında FFP2/N95 yüz maskesinin oksijen
satürasyonu (SpO2), maküla ve optik disk damar
dansitesi üzerindeki etkisinin optik koherens tomografi
anjiyografi (OKTA) ile değerlendirilmesi amaçlanmıştır.
Gereç ve Yöntem
Çalışmaya 19 gönüllü sağlık çalışanının 38 gözü dahil
edilmiştir. Tam oftalmolojik muayeneleri yapılmıştır.
N95 maske takılmasından hemen önce ve 4 saat sürekli
kullanımından hemen sonra oksijen saturasyonunu
değerlendirmek için parmak tipi puls oksimetre ve
optik disk ile retinal damar dansitelerini değerlendirmek
için Angiovue OKTA cihazı kullanılmıştır. Katılımcılardan
bu süre içerisinde maskelerini çıkarmamaları
istenmiştir. OKTA ile maske takılmadan ve çıkarılmadan
hemen önce maküla ve optik disk damar dansiteleri
değerlendirilmiştir.
Bulgular
Çalışmaya dahil edilen 19 gönüllünün 15’i kadın, 4’ü
erkekti. Ortalama yaş 36,64 ± 9,3 yıldı. Tüm gözlerde
Snellen’e göre düzeltilmiş görme keskinliği 20/20
idi ve tümünün göz içi basınç ölçümleri normal sınırlardaydı.
N95 maske takılmadan önceki oksijen satürasyonu
%97,94 ± 0,8, dört saat kullanım sonrasında
ise %96,14 ±1,8 idi. Maske kullanımı sonrası santral
maküla kalınlığında (SMK) anlamlı artış (p<0,001),
süperfisyal parafovea ve foveal koryokapillaris damar
dansitelerinde maske kullanımı sonrası anlamlı azalma
saptandı (p<0,05). Optik disk süperior ve inferior
radial peripapiller kapiller pleksus (RPK) damar dansitelerinde
ise maske kullanımı sonrası anlamlı artış
bulundu (p<0,05).
Sonuç
N95 maske kullanımı sonrası oksijen satürasyonu
düşmektedir. Maske kullanımı sonrası CO2 seviyesinde
artış ve O2 seviyesinde düşüşe cevap olarak retinal
ve koroidal vazoreaktivite değişmektedir.

Keywords

Damar dansitesi, Maküla, N95 maske, Optik disk, Optik koherens tomografi anjiyografi

EVALUATION OF THE EFFECT OF N95 MASK USE ON RETINAL VASCULAR DENSITY BY OPTICAL COHERENCE TOMOGRAPHY ANGIOGRAPHY

Abstract

Objective
This study aims to evaluate the effects of FFP2/N95
face mask use on oxygen saturation (SpO2), macula,
and optic disc vessel density through optical coherence
tomography angiography (OCTA) in healthcare workers.
Material and Method
A total of 38 eyes from 19 volunteer healthcare workers
were included in the study. Complete ophthalmic
examinations were performed. Finger-type pulse oximetry
measurements were used to assess the oxygen
saturation also and Angiovue OCTA used for vascular
density measurements before and after 4 hours of
continuous N95 mask wear. Participants were instructed
not to remove their masks during this period. Macular
and optic disc vessel densities were evaluated
using OCTA before and immediately after mask application
and removal.
Results
Of the 19 participants, 15 were female and 4 were
male. The mean age was 36,64 ± 9,3 years. The Snellen-
Corrected visual acuity was 20/20 in all eyes, and
intraocular pressure measurements were within normal
limits. Oxygen saturation was 97,94% ± 0,8 before
N95 mask wear, and 96,14% ± 1,8 after four hours of
mask application. Significant increase in central macular
thickness (CMT) (p<0,001), and significant decrease
in parafoveal vessel densities in the superficial
plexus and choriocapillaris in the fovea (p<0,05) were
observed after mask usage. Significant increase in
vessel densities of the superior and inferior radial peripapillary
capillary plexus (RPC) was found after mask
usage (p<0,05).
Conclusion
Oxygen saturation decreases after N95 mask usage.
Vascular reactivity between the retina and choroid
changes in response to increased CO2 levels and decreased
O2 levels after mask usage.

Keywords

Vessel density, Macula, N95 mask, Optic disc, Optical coherence tomography angiography

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