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Förekomst av pinguecula och pterygium hos synhjälpsökande i Kenya
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 thesis
Abstract [en]

The aim of this study is to investigate the occurrence of pinguecula and pterygia among people who sought visual aid during a journey with the charity organisation Vision For All. Associations between these changes in the eye and UV-exposure, age and gender are also investigated, as well as if either pinguecula or pterygia is more common overall and if one of them is more common in any of the visited cities. 

The measurements were conducted during a journey with Vision For All in Kenya in April 2019. There were 160 participants in the study, out of them were 99 women and 61 were men. The participants were between 11–88 years old and the average age was 47.3 ± 13.5 years. An ophthalmoscope was used to examine pinguecula and pterygia. First the participant was asked to look straight ahead and then right and left so both the central, nasal and temporal conjunctiva and cornea could be examined. All the participants in the study had pinguecula and/or pterygia in one or both eyes. 

Pinguecula in both eyes was most common among the participants. Pinguecula was documented in 136 of the participants and pterygia in 42 participants. This means that 18 participants had both pinguecula and pterygia, either both changes in one eye or one in each one. Both pinguecula and pterygia was most commonly existing in the nasal part of the eye. Working outdoors was more common than working indoors in all of the cities visited. 

In this study no association between the changes and age could be found, because people without changes was not included in this study. Association between changes and gender and working indoors or outdoors could not be found. Pinguecula was more common when it was placed both in the nasal and temporal part of the eye and pterygia was more commonly placed in the nasal part of the eye. A significant difference between the changes in the cities visited could not be found. 

Abstract [sv]

Syfte: I denna studie undersöks förekomsten av pinguecula och pterygium hos synhjälpsökande i Kenya. Studien undersöker även om samband mellan förändringarna och inomhus-/utomhusarbete, ålder samt kön finns. Om den ena förändringen är mer förekommande än den andra, och om någon är mer förekommande på någon av de besökta platserna undersöks också.

Metod: I samband med en resa till Kenya med hjälporganisationen Vision For All i början av april 2019 genomfördes mätningar till studien i tre olika städer. Av 160 deltagare var 99 kvinnor och 61 män. Deltagarna var mellan 11–88 år och medelåldern var 47,3 ± 13,5 år. Oftalmoskop användes för att undersöka pinguecula och pterygium. Först ombads deltagaren att titta rakt fram, sedan år höger och vänster så både centrala, nasala och temporala conjunctiva och cornea kunde undersökas. Alla deltagare i studien hade pinguecula och/eller pterygium i ett eller båda ögonen.

Resultat: Det vanligast förekommande var att pinguecula fanns i båda ögonen hos deltagarna. Pinguecula noterades hos totalt 136 av deltagarna och pterygium hos totalt 42 deltagare. Detta innebär att 18 deltagare hade både pinguecula och pterygium, antingen båda förändringarna i samma öga eller en i vardera öga. Både pinguecula och pterygium var vanligen placerat nasalt. Utomhusarbete var vanligare än inomhusarbete i alla de besökta städerna.

Slutsats: I den här studien kunde inget samband mellan förändringarna och ålder visas, på grund av att personer utan förändringar inte inkluderades i studien. Samband mellan förändringar och kön eller inomhus-/utomhusarbete kunde inte heller visas. Den vanligaste placeringen för pinguecula var att det fanns både nasalt och temporalt och pterygium var vanligast nasalt. Någon påfallande skillnad av förändringarna i de olika städerna som besöktes kunde inte dokumenteras.

Place, publisher, year, edition, pages
2019. , p. 26
Keywords [sv]
pinguecula, pterygium, Kenya
National Category
Medical and Health Sciences
Identifiers
URN: urn:nbn:se:lnu:diva-85440OAI: oai:DiVA.org:lnu-85440DiVA, id: diva2:1325597
Subject / course
Optometry
Educational program
Optometry Programme, 180 credits
Supervisors
Examiners
Available from: 2019-06-18 Created: 2019-06-16 Last updated: 2019-06-18Bibliographically approved

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