Choroidal thickness changes in healthcare professionals wearing surgical masks or FFP2 masks: Pilot study.
Photodiagnosis Photodyn Ther
; 37: 102608, 2022 Mar.
Article
in En
| MEDLINE
| ID: mdl-34732376
ABSTRACT
PURPOSE:
To evaluate the choroidal thickness (CT) with enhanced depth-imaging optical coherence tomography (EDI-OCT) in healthcare professionals using surgical masks or FFP2 (N95) masks.METHODS:
We included the 120 eyes of 120 healthy volunteers who were using a surgical mask (Group 1) or FFP2 mask (Group 2) in the study. Spectral domain (SD) OCT was used to measure CT. EDI-OCT was used to measure subfoveal and perifoveal CT. Points 1500 µm nasal (CN1500) and temporal (CT1500) to the foveal center were used to measure perifoveal CT. Oxygen saturation and heart rate were measured with a pulse oximeter. All measurements were performed at 830, before wearing the mask, and at 1230, when the mask was removed for the lunch break.RESULTS:
Of a total of 120 subjects, Group 1 consisted of 60 subjects (mean age 38.50±8.60 (range 24-44) years) and Group 2 also consisted of 60 subjects (mean age 36.60±6.53 (range 26-45) years). Although not statistically significant, CT was seen to have increased at 3 measurement points in Group 1 after using the mask for 4 h subfoveal CT (CSF) (p = 0.545), CT1500 (p = 0.080), and CN1500 (p = 0.251)). In Group 2, the increase in CSF (p = 0.001) was statistically significant while the increases in CN1500 and CT1500 were not (p = 0.162 and p = 0.058, respectively) after using the mask for 4 h.CONCLUSION:
We found CT to increase after 4 h of mask use, and this increase was more marked in Group 2. The increase in subfoveal CT in particular was statistically significant in Group 2.Key words
ASTM, American Society for Testing and Materials; AXL, Axial length; Acronyms: FFP, Filtering facepiece; BCVA, Best-corrected visual acuity; BFE, Bacterial Filtration Efficiency; BMI, Body mass index; CO(2), Carbon dioxide; CT, Choroidal thickness; Choroidal thickness; EDI-OCT, Enhanced depth imaging-optical coherence tomography; Enhanced depth imaging; FFP2 mask; FFR, Filtering facepiece respirators; HIF, Hypoxia-induced factor; IOP, Intraocular pressure; O(2), Oxygen; OCTA, Optical Coherence Tomography Angiography; Optical coherence tomography; PCO(2), Carbon dioxide pressure; PFE, Particle Filter Efficiency; RPE, Retinal pigment epithelium; SD, Standard deviation; SE, Spherical equivalent; SpO(2), Oxygen saturation; Surgical mask
Full text:
1
Collection:
01-internacional
Database:
MEDLINE
Main subject:
Photochemotherapy
/
Masks
Limits:
Adult
/
Humans
Language:
En
Journal:
Photodiagnosis Photodyn Ther
Journal subject:
DIAGNOSTICO POR IMAGEM
/
TERAPEUTICA
Year:
2022
Document type:
Article