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
En jämförande studie av ackommodation mellan glasögon och kontaktlinser hos myoper
Linnaeus University, Faculty of Health and Life Sciences, Department of Medicine and Optometry.
2019 (Swedish)Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesisAlternative title
A comparative study of accommodation between spectacles and contact lenses in myops (English)
Abstract [sv]

Syfte: Kontaktlinser ökar ackommodationskravet hos myoper. Syftet med denna studie är att undersöka om ökningen  av ackommodationskravet blir större av 30 minuters läsning vid jämförelse mellan glasögon och kontaktlinser.

Metod:15 myoper deltog i studien, 14 kvinnor och 1 man. Deltagarnas genomsnittliga refraktionsfel var -2,49 ±1,71D och alla läste minst 1,0 på 6 m och 6 p på 40cm med glasögon- och kontaktlinskorrektion. Varje deltagare deltog vid två tillfällen på olika dagar, första med glasögon och andra med kontaktlinser. Den ackommodativa responsen, amplituden och faciliteten mättes innan och efter 30 minuters läsning på 33cm avstånd vid bägge tillfällen. Resultaten sammanställdes sedan i Microsoft Office Excel, där medelvärde, standardavvikelse, standardfel och parat t-test användes för att analysera resultaten.

Resultat: Den ackommodativa responsen ökar signifikant med kontaktlinser där ökningen är större efter 30 minuters läsning. Ackommodationsamplituden visar en signifikant minskning vid kontaklinser och minskar mer efter läsningen. Den ackommodativa faciliteten visar ingen signifikans. Höga standardavvikelser visar på varierat resultat bland deltagarna och flera av deltagarna låg under normalvärden för ackommodativ facilitet.

Slutsats:Myopers ackommodationskrav ökar vid kontaklinsanvändning i jämförelse med glasögonanvändning. Den ackommodativa ansträngningen efter 30 minuters närarbete är större vid kontaktlinser än glasögon.

Abstract [en]

Aim: Contact lenses increase the accommodative demand in myopes. The purpose of this study is to investigate if the increase of accommodative demand becomes greater after 30 minutes of reading when shifting between spectacles and contact lenses.

Method: 15 myopes participated in the study, 14 women and 1 man. The participants' average refractive error was -2.49 ± 1.71D and all read at least 1.0 at 6 m and 6p at 40 cm with spectacles and contact lenses. Each subject participated on two separate occasions, first with spectacles and then with contact lenses. The accommodative response, amplitude and facility were measured before and after 30 minutes of reading at the distance of 33 cm, on both occasions. The results were compiled in Microsoft Office Excel, where the mean, standard deviation, standard error and paired t-test were used to analyze the results.

Result: The accommodative response increases significantly with contact lenses and the increase was greater after 30 minutes of reading. The accommodative amplitude shows a significant decrease in contact lenses and more after reading. The accommodative facility shows no significance. High standard deviations show varied results among participants and several of the participants were below normal values ​​for the accommodative facility.

Conclusion: Myopes accommodative requirements increases with contact lenses use as compared to spectacles. The accommodative effort after 30 minutes of short distance reading is greater in contact lenses than spectacles.

Place, publisher, year, edition, pages
2019. , p. 23
Keywords [sv]
Kontaktlinser, Ackommodation, Myopi
National Category
Medical and Health Sciences
Identifiers
URN: urn:nbn:se:lnu:diva-85577OAI: oai:DiVA.org:lnu-85577DiVA, id: diva2:1326904
Subject / course
Optometry
Educational program
Optometry Programme, 180 credits
Supervisors
Examiners
Available from: 2019-06-19 Created: 2019-06-18 Last updated: 2019-06-19Bibliographically approved

Open Access in DiVA

fulltext(442 kB)9 downloads
File information
File name FULLTEXT01.pdfFile size 442 kBChecksum SHA-512
5f2143aa42b8470014429be6aadae0e2e1eddcd5e8e2e63c549a692ee5186b793ef9e7966ffde0622d75c3fdce3de98c132d7337b529409bd3b535cd67f45ff2
Type fulltextMimetype application/pdf

Search in DiVA

By author/editor
Göransson, Julia
By organisation
Department of Medicine and Optometry
Medical and Health Sciences

Search outside of DiVA

GoogleGoogle Scholar
Total: 9 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

urn-nbn

Altmetric score

urn-nbn
Total: 54 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