Syfte: Studiens syfte var att kontrollera repeterbarhet och jämförbarhet hos tre kliniska instrument som används för att mäta hornhinnans tjocklek i friska ögon. Instrumenten som användes har flera olika användningsområden men fokus i denna studie ligger specifikt på pakymetri: mätning av hornhinnetjocklek. Metod: Det var 64 personer som deltog i studien. Alla var över 18 år och befann sig på Linnéuniversitetet i Kalmar vid tidpunkterna för mättillfällena. De tre optiska pakymetri instrumenten som användes var Topcon TRK-2P, Bon Sirius samt Essilor Wavefront Analyzer Medica 700+. Tre mätningar utfördes vid varje instrument på deltagarnas båda ögon. All data sammanställdes i Google Kalkyl och analyserades vidare i Graphpad Prism (version 9). Resultat: Repeterbarheten testades med ICC vilket var över 0,98 på samtliga instrument, CR var mellan 5,28-8,80 μm och CV var mellan 6,29-6,74%. Jämförbarheten visade att det finns en signifikant skillnad mellan de tre instrumenten (One-way RM- ANOVA, p<0,0001). Slutsats: Samtliga instrument som användes inom studien visade på en utmärkt repeterbarhet vid mätning av friska ögon, däremot förekom signifikanta skillnader dem emellan. Detta innebär att man bör hålla sig till ett och samma instrument vid uppföljning av patienter. / Purpose: The purpose of this study was to examine the repeatability and comparability of three clinical instruments used to measure the corneal thickness in healthy eyes. The different instruments all have various fields of usage but the focus in this study is pachymetry: measurement of the corneal thickness. Method: In total, 64 people participated in this study. Everyone that participated were above the age of 18 and were located at Linneaus university in Kalmar, Sweden at the time the measurements took place. The three optical pachymetry instruments used were Topcon TRK-2P, Bon Sirius and Essilor Wavefront Analyzer Medica 700+. Three measurements were taken on each instrument on the participants’ both eyes. All collected data was collated in Google Sheets and analyzed in Graphpad Prism (version 9). Results: The repeatability was tested with ICC that was above 0,98 on all the instruments. CR was between 5,28-8,80 μm and CV was between 6,29-6,74%. The comparability showed that there was a significant difference between the three instruments (One-way RM- ANOVA, p<0,0001). Conclusion: All three instruments that were used during this study showed an excellent repeatability when measuring healthy eyes. However, there were significant differences between the instruments themselves. This means that you should stick to the same instrument while following up patients.
| Identifer | oai:union.ndltd.org:UPSALLA1/oai:DiVA.org:lnu-121449 |
| Date | January 2023 |
| Creators | Gustafsson, Sandra, Landström Hansson, Sanna |
| Publisher | Linnéuniversitetet, Institutionen för medicin och optometri (MEO) |
| Source Sets | DiVA Archive at Upsalla University |
| Language | Swedish |
| Detected Language | English |
| Type | Student thesis, info:eu-repo/semantics/bachelorThesis, text |
| Format | application/pdf |
| Rights | info:eu-repo/semantics/openAccess |
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