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Changes in the spatial resolution and in the color contrast perception due to interjected face protector screens in the emergency situations in mesopic conditions
Author(s) -
BONNIN ARIAS C,
PEREZCARRASCO MJ,
CHAMORRO E,
NAVARROBLANCO C,
GOMEZVADILLO T,
SANCHEZ RAMOS C
Publication year - 2010
Publication title -
acta ophthalmologica
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.534
H-Index - 87
eISSN - 1755-3768
pISSN - 1755-375X
DOI - 10.1111/j.1755-3768.2010.491.x
Subject(s) - mesopic vision , contrast (vision) , optometry , audiology , medicine , visual acuity , face masks , perception , ophthalmology , computer vision , psychology , computer science , photopic vision , retinal , disease , covid-19 , pathology , neuroscience , infectious disease (medical specialty)
Purpose Assess the changes in the visual capabilities related to protector masks that are mandatory in emergency situations. The study was carried out in mesopic conditions. Methods 36 adults were assessed. Everyone was from both genders, ranging 18 to 49 years old, with an average age of 30 +‐ 8 years old. Face protectors screens have been utilized on Individual Protection Kits for emergency situations. Every measure was conducted by the same examiner and into the same laboratory in mesopic conditions. Visual Acuity was evaluated by means of the Sloan´s test at 100% and 5% of contrast in logarithmic units, the Contrast Sensitivity with the CSV100 test and the colour perception with Ishihara´s test (each test was accomplished by the manufacturer´s recommendations). Results The capacity for distinguishing details in the assessment carried out without a protector screen was of ‐0,05+‐0,05 logMAR, and with a protector screen was of 0,00+‐0,11 logMAR; being the difference statistically significant. Constrast Sensitivity values are lower when a protector filter is interjected, with p‐valor=0,013. Regarding colour perception, significative differences were detected after protector screen application and withdrawal. Conclusion In mesopic conditions, spatial resolution, contrast sensitivity and colour perception are significantly more decreased due to face protector screens needed for emergency situations.