Undilated versus dilated monoscopic smartphone-based fundus photography for optic nerve head evaluation

Abstract Smartphone-based fundus photography (SBFP) allows for a cheap and mobile fundus examination with the potential to revolutionize eye care especially in low income settings. The purpose of this study was to assess the impact of pupil dilation on image quality in optic nerve head (ONH) imaging...

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Autores principales:	Maximilian W. M. Wintergerst, Christian K. Brinkmann, Frank G. Holz, Robert P. Finger
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2018
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/b0836fe4b8fd48338f69878e659a46a2
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spelling	oai:doaj.org-article:b0836fe4b8fd48338f69878e659a46a22021-12-02T15:09:01ZUndilated versus dilated monoscopic smartphone-based fundus photography for optic nerve head evaluation10.1038/s41598-018-28585-62045-2322https://doaj.org/article/b0836fe4b8fd48338f69878e659a46a22018-07-01T00:00:00Zhttps://doi.org/10.1038/s41598-018-28585-6https://doaj.org/toc/2045-2322Abstract Smartphone-based fundus photography (SBFP) allows for a cheap and mobile fundus examination with the potential to revolutionize eye care especially in low income settings. The purpose of this study was to assess the impact of pupil dilation on image quality in optic nerve head (ONH) imaging and vertical cup-to-disc ratio (vCDR) evaluation with SBFP. Eyes with glaucoma or suspected to have glaucoma were imaged with conventional digital fundus photography (CFP) and SBFP undilated and following dilation, all monoscopically. SBFP was possible in 74% of eyes without dilation and in 98% following dilation. Better image quality on SBFP was achieved with dilation and complete visualization of the optic disc rim was possible in 46% of images without dilation and on 94% of images with dilation. VCDR measurements on images obtained following dilation highly correlated with measurements on CFP (coefficient of correlation r = 0.91, p < 0.001), whereas vCDR on images obtained without dilation correlated less well with CFP (r = 0.70, p < 0.001). SBFP for ONH evaluation is promising, however dilation appears mandatory to achieve results comparable to optic disc evaluation on CFP. ONH imaging with smartphones without dilation might bear the risk of underestimating the CDR and hence overlooking patients at risk for glaucoma.Maximilian W. M. WintergerstChristian K. BrinkmannFrank G. HolzRobert P. FingerNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 8, Iss 1, Pp 1-7 (2018)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Maximilian W. M. Wintergerst Christian K. Brinkmann Frank G. Holz Robert P. Finger Undilated versus dilated monoscopic smartphone-based fundus photography for optic nerve head evaluation
description	Abstract Smartphone-based fundus photography (SBFP) allows for a cheap and mobile fundus examination with the potential to revolutionize eye care especially in low income settings. The purpose of this study was to assess the impact of pupil dilation on image quality in optic nerve head (ONH) imaging and vertical cup-to-disc ratio (vCDR) evaluation with SBFP. Eyes with glaucoma or suspected to have glaucoma were imaged with conventional digital fundus photography (CFP) and SBFP undilated and following dilation, all monoscopically. SBFP was possible in 74% of eyes without dilation and in 98% following dilation. Better image quality on SBFP was achieved with dilation and complete visualization of the optic disc rim was possible in 46% of images without dilation and on 94% of images with dilation. VCDR measurements on images obtained following dilation highly correlated with measurements on CFP (coefficient of correlation r = 0.91, p < 0.001), whereas vCDR on images obtained without dilation correlated less well with CFP (r = 0.70, p < 0.001). SBFP for ONH evaluation is promising, however dilation appears mandatory to achieve results comparable to optic disc evaluation on CFP. ONH imaging with smartphones without dilation might bear the risk of underestimating the CDR and hence overlooking patients at risk for glaucoma.
format	article
author	Maximilian W. M. Wintergerst Christian K. Brinkmann Frank G. Holz Robert P. Finger
author_facet	Maximilian W. M. Wintergerst Christian K. Brinkmann Frank G. Holz Robert P. Finger
author_sort	Maximilian W. M. Wintergerst
title	Undilated versus dilated monoscopic smartphone-based fundus photography for optic nerve head evaluation
title_short	Undilated versus dilated monoscopic smartphone-based fundus photography for optic nerve head evaluation
title_full	Undilated versus dilated monoscopic smartphone-based fundus photography for optic nerve head evaluation
title_fullStr	Undilated versus dilated monoscopic smartphone-based fundus photography for optic nerve head evaluation
title_full_unstemmed	Undilated versus dilated monoscopic smartphone-based fundus photography for optic nerve head evaluation
title_sort	undilated versus dilated monoscopic smartphone-based fundus photography for optic nerve head evaluation
publisher	Nature Portfolio
publishDate	2018
url	https://doaj.org/article/b0836fe4b8fd48338f69878e659a46a2
work_keys_str_mv	AT maximilianwmwintergerst undilatedversusdilatedmonoscopicsmartphonebasedfundusphotographyforopticnerveheadevaluation AT christiankbrinkmann undilatedversusdilatedmonoscopicsmartphonebasedfundusphotographyforopticnerveheadevaluation AT frankgholz undilatedversusdilatedmonoscopicsmartphonebasedfundusphotographyforopticnerveheadevaluation AT robertpfinger undilatedversusdilatedmonoscopicsmartphonebasedfundusphotographyforopticnerveheadevaluation
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Undilated versus dilated monoscopic smartphone-based fundus photography for optic nerve head evaluation

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