Comparison between optical and digital blur using near visual acuity

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11150%2F21%3A10423169" target="_blank" >RIV/00216208:11150/21:10423169 - isvavai.cz</a>

Výsledek na webu

<a href="https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=JmI6TMBgTQ" target="_blank" >https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=JmI6TMBgTQ</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1038/s41598-021-82965-z" target="_blank" >10.1038/s41598-021-82965-z</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Comparison between optical and digital blur using near visual acuity

Popis výsledku v původním jazyce

In a low-cost laboratory setup, we compared visual acuity (VA) for stimuli rendered with Zernike aberrations to an equivalent optical dioptric defocus in emmetropic individuals using a relatively short observing distance of 60 cm. The equivalent spherical refractive error of+ 1, + 2 or + 4 D, was applied in the rendering of Landolt Rings. Separately, the refractive error was introduced dioptrically in: (1) unchanged Landolt Rings with an added external lens (+1, + 2 or + 4 D) at the subject&apos;s eye; (2) same as (1) but with an added accommodation and a vertex distance adjustment. To compare all three approaches, we examined VA in 10 healthy men. Stimuli were observed on a PC CRT screen. For all three levels of refractive error, the pairwise comparison did not show a statistically signifcant diference between digital blur and accommodation-plus-vertex-distance-adjusted dioptric blur (p&lt; 0.204). The best agreement, determined by Bland-Altman analysis, was measured for+ 4 D and was in line with test-retest limits for examination in the clinical population. Our results show that even for a near observing distance, it is possible to use digitally rendered defocus to replicate dioptric blur without a signifcant change in VA in emmetropic subjects.

Název v anglickém jazyce

Comparison between optical and digital blur using near visual acuity

Popis výsledku anglicky

In a low-cost laboratory setup, we compared visual acuity (VA) for stimuli rendered with Zernike aberrations to an equivalent optical dioptric defocus in emmetropic individuals using a relatively short observing distance of 60 cm. The equivalent spherical refractive error of+ 1, + 2 or + 4 D, was applied in the rendering of Landolt Rings. Separately, the refractive error was introduced dioptrically in: (1) unchanged Landolt Rings with an added external lens (+1, + 2 or + 4 D) at the subject&apos;s eye; (2) same as (1) but with an added accommodation and a vertex distance adjustment. To compare all three approaches, we examined VA in 10 healthy men. Stimuli were observed on a PC CRT screen. For all three levels of refractive error, the pairwise comparison did not show a statistically signifcant diference between digital blur and accommodation-plus-vertex-distance-adjusted dioptric blur (p&lt; 0.204). The best agreement, determined by Bland-Altman analysis, was measured for+ 4 D and was in line with test-retest limits for examination in the clinical population. Our results show that even for a near observing distance, it is possible to use digitally rendered defocus to replicate dioptric blur without a signifcant change in VA in emmetropic subjects.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

30103 - Neurosciences (including psychophysiology)

Projekt

<a href="/cs/project/NV18-06-00484" target="_blank" >NV18-06-00484: Zlepšení kvality života u pacientů se stabilní makulopatií prostřednictvím implantace intraokulární makulární čočky a modulací zrakové plasticity transkraniální elektrickou stimulací</a><br>

Návaznosti

S - Specificky vyzkum na vysokych skolach<br>I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2021

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Scientific Reports

ISSN

2045-2322

e-ISSN

—

Svazek periodika

11

Číslo periodika v rámci svazku

1

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

8

Strana od-do

3437

Kód UT WoS článku

000625195000001

EID výsledku v databázi Scopus

2-s2.0-85100701296