The Prevalence Of Prism Effect In College Student Wearing Corrective Glasses At UKRIDA Faculty of Medicine and Health Sciences 2023
DOI:
https://doi.org/10.36452/jmedscientiae.v4i1.3685Keywords:
Prism Effect, Decentration, Unwanted Prism, Optical CentreAbstract
Abstract
Prism effect occurs when light rays decentration from the optical center point. Prism effect without prescription is called unwanted prism. Purpose: This study aims to determine the prevalence of the prism effect in students who wear corrective glasses. Method: This study used a quantitative descriptive method with a cross-sectional design on 78 respondents. Data collection was carried out from September 2023 to October 2023. Results: In this study, 71.8% (56 people) of respondents were female. As many as 52.6% (41 people) of respondents used spherocylinder lenses. The resultant horizontal and vertical prism effects were highest in the 0.00–1.00∆D category, 70.5% (55 people) and 91% (71 people). The most resultant prism base directions at the Base In & Base Down directions as much as 38.5% (30 people). The horizontal prism effect is still within tolerance of 65.4% (51 people) and the vertical prism effect is still within tolerance of 70.5% (55 people). Conclusion: The prevalence of students experiencing the prism effect reached 93.4%. However, most of it within tolerance limits, horizontal 65.4% and vertical 70.5%. It is recommended for optometrists to prescribe glasses and ensure that the glasses have gone through the correct steps to avoid unwanted prism effects.
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Copyright (c) 2025 Billy Gadi Kencana, Inggrid Osya Far Far, Desi Hartati Silaen

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