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Kencana, Billy Gadi
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Biochemistry, Genetics & Molecular Biology Immunology & microbiology Medicine & Pharmacology Nursing Public Health

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Hubungan Antara Kelainan Refraksi Dengan Perilaku Membaca Pada Siswa Anggota Jemaat Gereja Kristen Nafiri Sion Fajar Kemuliaan Tahun 2023 Indrajanti, Mirza; Wijaya, Esther; Nila, Seri; Sinaga, Natasya Advelin; Gosali, Vincentio Owen; Kencana, Billy Gadi
Jurnal MedScientiae Vol. 3 No. 3 (2024): Desember
Publisher : Universitas Kristen Krida Wacana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36452/JMedScientiae.v3i3.3332

Abstract

Myopia is an eye disorder in which parallel rays coming from an infinite distance are refracted in front of the retina. Astigmatism is an optical condition of the eye, in which parallel rays are not refracted at a single focal point, so that the focus is unclear, vision is blurred and often dizzy. Anisometropia is a difference in refractive error between the two eyes of 1-2 Diopters (D) in one or more meridians. This can cause aniseikonia, namely a difference in shadow both in shape and size that causes difficulty in fusion. Hypermetropia / Hyperopia / farsightedness is a condition of not being able to see close objects clearly, this condition is the opposite of farsightedness (myopia). The symptoms of hypermetropia are similar to presbyopia in the elderly. Research objective is to educate students about visual health. Method is data collection was conducted through anamnesis, visual acuity examination using refraction instruments and distributing questionnaires to students of the Nafiri Sion Fajar Kemuliaan Christian Church aged 12-22 years, totaling 62 people, then diagnosed with refractive disorders. There is a relationship between refractive disorders and students' reading behavior.
Prevalensi Efek Prisma Pada Mahasiswa Pengguna Kacamata Koreksi Di FKIK UKRIDA Angkatan 2023 Kencana, Billy Gadi; Far Far, Inggrid Osya; Silaen, Desi Hartati
Jurnal MedScientiae Vol. 4 No. 1 (2025): April
Publisher : Universitas Kristen Krida Wacana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36452/jmedscientiae.v4i1.3685

Abstract

Prism effect occurs when light rays decentration from the optical center point. Prism effect without prescription is called unwanted prism. This study aims to determine the prevalence of the prism effect in students who wear corrective glasses. 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. 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). 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.
Co-Authors Far Far, Inggrid Osya Gosali, Vincentio Owen Indrajanti, Mirza Nila, Seri Silaen, Desi Hartati Sinaga, Natasya Advelin Wijaya, Esther