Change search
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf
Förekomsten av refraktionsfel hos befolkningen mellan 10-35 år i Guatemala
Linnaeus University, Faculty of Health and Life Sciences, Department of Medicine and Optometry.
2016 (Swedish)Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
Abstract [sv]

Syfte: Syftet med studien var att undersöka förekomsten av hyperopi och myopi hos personer mellan 10-35 år i Guatemala. Samt att undersöka förekomsten av refraktionsfel bland olika yrkesgrupper.

Material och metod: Studien utfördes från den 28 mars till 9 april i Guatemala under en resa med Vision For All. De insamlade mätvärdena kommer från orterna runt Antigua och Alta Verapaz. En subjektiv binokulär refraktion genomfördes på patienterna där sfärisk ekvivalens tillämpades. Refraktionsfelen definierades som hyperopi SE ≥ +0,75 D och myopi SE ≤ -0,75 D. Utrustningen som användes bestod av flipprar (+1,00 till +2,50 D),visustavla med Snellen E-hakar, provglaslåda, provbåge och journalblad.

Resultat: 503 personer (311 kvinnor och 192 män) i åldrarna 10-35 år deltog. Förekomsten av hyperopi var störst på 30 %, myopi 19 % och emmetropi 51 %. Myopiförekomsten var högst i åldersgruppen 16-20 år på 27 %. Det vanligaste refraktionsfelet efter arbete var hyperopi.

Slutsats: Resultatet från studien visade en högre förekomst av hyperopi än myopi hos befolkningen mellan 10-35 år i Guatemala. Det vanligast förekommande synfelet i samtliga yrkesgrupper var hyperopi. Tidigare studier från Central- och Sydamerika visar på liknande resultat med högst förekomst av hyperopi.

Abstract [en]

Purpose: The aim of this study was to examine the prevalence of hyperopia and myopia among people aged 10-35 years in Guatemala. Also to investigate the prevalence of refractive errors in various occupational groups.

Methods: The study was conducted from March 28 to April 9 during a journey with Vision For All. The measurements were performed in the area around Antigua and Alta Verapaz with binocular subjective refraction. Spherical equivalent refractive errors were used to quantify ametropia. The ametropia was defined as hyperopia SE > +0,75 D and myopia SE < -0,75 D. The equipment used consisted of flippers (+1,00 to +2,50 D), Snellen Eye Chart with tumbling E, trial lenses, trial frame and protocol.

Results: 503 people participated (311 women and 192 men) aged 10-35 years. The prevalence of hyperopia was highest at 30 %, 19 % had myopia and 51 % had emmetropia. The incidence of myopia was highest in the age group between 16-20 years at 27 %. The most common refractive error associated with occupation was hyperopia.

Conclusions: The results showed a higher prevalence of hyperopia than myopia among the population aged 10-35 years in Guatemala. The most common refractive error in the various occupational groups was hyperopia. Similar results with a higher prevalence of hyperopia can be seen in earlier studies from Central- and South America.

Place, publisher, year, edition, pages
2016. , 23 p.
Keyword [sv]
Prevalens, refraktionsfel, hyperopi, myopi, närarbete
National Category
Other Medical Sciences
Identifiers
URN: urn:nbn:se:lnu:diva-53889OAI: oai:DiVA.org:lnu-53889DiVA: diva2:939896
Subject / course
Optometry
Educational program
Optometry Programme, 180 credits
Supervisors
Examiners
Available from: 2016-06-22 Created: 2016-06-19 Last updated: 2016-06-22Bibliographically approved

Open Access in DiVA

fulltext(842 kB)74 downloads
File information
File name FULLTEXT01.pdfFile size 842 kBChecksum SHA-512
1a600fa8d5c0c40250ed3f2c765e8acc3ed8d66964f8b3e36ae0329f6f77978d7546387969c3d20190fc6281f1f8788ea09cc7b74ad04e5c8627960a506a90c1
Type fulltextMimetype application/pdf

Search in DiVA

By author/editor
Finnman, Louise
By organisation
Department of Medicine and Optometry
Other Medical Sciences

Search outside of DiVA

GoogleGoogle Scholar
Total: 74 downloads
The number of downloads is the sum of all downloads of full texts. It may include eg previous versions that are now no longer available

Total: 117 hits
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf