Hand-Held Nidek versus Table-Mounted Huvitz Autorefractors and Their Agreement with Subjective Refraction in Adults

Hand-Held Nidek versus Table-Mounted Huvitz Autorefractors and Their Agreement with Subjective Refraction in Adults

Khulood Muhammad Sayed, Alahmady Hammad Alsmman, Engy Mohammed Mostafa The Department of Ophthalmology, Sohag Faculty of Medicine, Sohag University, Sohag, EgyptCorrespondence: Alahmady Hammad AlsmmanThe Department of Ophthalmology, Sohag Faculty of Medicine, Sohag University, Sohag, 82524, EgyptTel...

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Autores principales: Sayed KM, Alsmman AH, Mostafa EM
Formato: article
Lenguaje:EN
Publicado: Dove Medical Press 2021
Materias:
huvitz
nidek
portable
autorefractometer;subjective refraction
Ophthalmology
RE1-994
Acceso en línea:https://doaj.org/article/3171617e3a5744ab90a69bfeda949ec6
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spelling oai:doaj.org-article:3171617e3a5744ab90a69bfeda949ec62021-12-02T13:56:03ZHand-Held Nidek versus Table-Mounted Huvitz Autorefractors and Their Agreement with Subjective Refraction in Adults1177-5483https://doaj.org/article/3171617e3a5744ab90a69bfeda949ec62021-04-01T00:00:00Zhttps://www.dovepress.com/hand-held-nidek-versus-table-mounted-huvitz-autorefractors-and-their-a-peer-reviewed-article-OPTHhttps://doaj.org/toc/1177-5483Khulood Muhammad Sayed, Alahmady Hammad Alsmman, Engy Mohammed Mostafa The Department of Ophthalmology, Sohag Faculty of Medicine, Sohag University, Sohag, EgyptCorrespondence: Alahmady Hammad AlsmmanThe Department of Ophthalmology, Sohag Faculty of Medicine, Sohag University, Sohag, 82524, EgyptTel +20-1111-428-635Email alahmady20@yahoo.comObjective: To compare the agreement between commercially available table mounted and a hand-held autorefractors and their agreement with subjective refraction. The effect of different body position with the handheld autorefractometer was also evaluated.Methods: A prospective study was performed on 253 healthy eyes. Refraction was acquired by a table-mounted Huvitz and hand-held Nidek autorefractometer, subjective refraction was acquired. Refractive errors were compared in terms of spherical equivalent (SE), cylinder power, and the J0 and J45. The level of agreement was evaluated by Bland–Altman plots.Results: There was a significant difference in SE measurements between both devices and between them and subjective refraction (P=0.00). The Huvitz SE readings tended to be less myopic. However, limits of agreement (LOA) for SE were narrowest for Nidek sitting vs supine followed by Huvitz vs subjective SE refraction. The LOA for SE for Nidek sitting vs subjective SE were of wider range. For cylinder values, LOA were similar for all devices and positions and between them and subjective cylinder refraction.Conclusion: Table mounted Huvitz and Nidek portable autorefractor cannot be used interchangeably in clinical practice except for estimation of the cylinder power. No difference in refraction between sitting and supine positions for portable Nidek autorefractor but with caution in cylinder axis. High agreement was achieved between subjective refraction and Huvitz readings but not with Nidek hand-held autorefractor. A highly reliable spectacle prescription could be done based on Huvitz readings. Both devices and positions could be used interchangeably in estimation of K-readings.Keywords: Huvitz, Nidek, portable, autorefractometer, subjective refractionSayed KMAlsmman AHMostafa EMDove Medical Pressarticlehuvitznidekportableautorefractometer;subjective refractionOphthalmologyRE1-994ENClinical Ophthalmology, Vol Volume 15, Pp 1391-1401 (2021)
institution DOAJ
collection DOAJ
language EN
topic huvitz
nidek
portable
autorefractometer;subjective refraction
Ophthalmology
RE1-994
spellingShingle huvitz
nidek
portable
autorefractometer;subjective refraction
Ophthalmology
RE1-994
Sayed KM
Alsmman AH
Mostafa EM
Hand-Held Nidek versus Table-Mounted Huvitz Autorefractors and Their Agreement with Subjective Refraction in Adults
description Khulood Muhammad Sayed, Alahmady Hammad Alsmman, Engy Mohammed Mostafa The Department of Ophthalmology, Sohag Faculty of Medicine, Sohag University, Sohag, EgyptCorrespondence: Alahmady Hammad AlsmmanThe Department of Ophthalmology, Sohag Faculty of Medicine, Sohag University, Sohag, 82524, EgyptTel +20-1111-428-635Email alahmady20@yahoo.comObjective: To compare the agreement between commercially available table mounted and a hand-held autorefractors and their agreement with subjective refraction. The effect of different body position with the handheld autorefractometer was also evaluated.Methods: A prospective study was performed on 253 healthy eyes. Refraction was acquired by a table-mounted Huvitz and hand-held Nidek autorefractometer, subjective refraction was acquired. Refractive errors were compared in terms of spherical equivalent (SE), cylinder power, and the J0 and J45. The level of agreement was evaluated by Bland–Altman plots.Results: There was a significant difference in SE measurements between both devices and between them and subjective refraction (P=0.00). The Huvitz SE readings tended to be less myopic. However, limits of agreement (LOA) for SE were narrowest for Nidek sitting vs supine followed by Huvitz vs subjective SE refraction. The LOA for SE for Nidek sitting vs subjective SE were of wider range. For cylinder values, LOA were similar for all devices and positions and between them and subjective cylinder refraction.Conclusion: Table mounted Huvitz and Nidek portable autorefractor cannot be used interchangeably in clinical practice except for estimation of the cylinder power. No difference in refraction between sitting and supine positions for portable Nidek autorefractor but with caution in cylinder axis. High agreement was achieved between subjective refraction and Huvitz readings but not with Nidek hand-held autorefractor. A highly reliable spectacle prescription could be done based on Huvitz readings. Both devices and positions could be used interchangeably in estimation of K-readings.Keywords: Huvitz, Nidek, portable, autorefractometer, subjective refraction
format article
author Sayed KM
Alsmman AH
Mostafa EM
author_facet Sayed KM
Alsmman AH
Mostafa EM
author_sort Sayed KM
title Hand-Held Nidek versus Table-Mounted Huvitz Autorefractors and Their Agreement with Subjective Refraction in Adults
title_short Hand-Held Nidek versus Table-Mounted Huvitz Autorefractors and Their Agreement with Subjective Refraction in Adults
title_full Hand-Held Nidek versus Table-Mounted Huvitz Autorefractors and Their Agreement with Subjective Refraction in Adults
title_fullStr Hand-Held Nidek versus Table-Mounted Huvitz Autorefractors and Their Agreement with Subjective Refraction in Adults
title_full_unstemmed Hand-Held Nidek versus Table-Mounted Huvitz Autorefractors and Their Agreement with Subjective Refraction in Adults
title_sort hand-held nidek versus table-mounted huvitz autorefractors and their agreement with subjective refraction in adults
publisher Dove Medical Press
publishDate 2021
url https://doaj.org/article/3171617e3a5744ab90a69bfeda949ec6
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AT mostafaem handheldnidekversustablemountedhuvitzautorefractorsandtheiragreementwithsubjectiverefractioninadults
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