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All Journal IJRETINA - International Journal of Retina
Syntia Nusanti
Universitas Indonesia, Cipto Mangunkusumo National Central General Hospital
Health Professions Medicine & Pharmacology Public Health

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Comparison of Wave Amplitude, Implicit Time and Comfort Level Using Dawson-Trick-Litzkow, Jet and Dencott Electrodes in Electroretinography in Normal Adults Theresia Yinski Pistari Gondosari; Mohamad Sidik; Syntia Nusanti
International Journal of Retina Vol 3 No 2 (2020): International Journal of Retina (IJRetina) - INAVRS
Publisher : Indonesian Vitreoretinal Society

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35479/ijretina.2020.vol003.iss002.123

Abstract

Introduction: Several electrodes can be used in standard full-field electroretinography (ERG). However, there are no standard values for Indonesians yet. Therefore, this research aims to establish normal values, to compare them and to compare comfort levels using DTL, Dencott and Jet electrodes in Indonesian adults. Method: Through convenient sampling, 58 normal Indonesian subjects, age 19-49 years old were selected. ERG amplitudes and implicit time values were measured according to recommendations by the International Society for Clinical Electrophysiology of Vision (ISCEV). Evaluations consisted of scotopic 0.01, 3.0, OP and photopic 3.0 flicker. After examination, all subjects filled in a questionnaire about comfort levels, adopted from the visual analog scale. Result: We observed a statistically significant difference in ERG normal values between electrodes with higher wave amplitudes and longer implicit times in Dencott and jet electrodes, compared to DTL electrodes. Jet and DTL electrodes are more comfortable than Dencott electrodes for Indonesian adults in standard full-field electroretinography. Conclusion: DTL electrodes give the lowest wave amplitudes and the shortest implicit times and are the most comfortable electrode compared to Dencott and ERG jet electrodes, in standard full-field electroretinography in Indonesian adults.
A Rare Case of Unilateral Retinitis Pigmentosa Syntia Nusanti; Mohamad Sidik; Ari Djatikusumo; Elyas Aditya
International Journal of Retina Vol 2 No 1 (2019): International Journal of Retina (IJRetina) - INAVRS
Publisher : Indonesian Vitreoretinal Society

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35479/ijretina.2019.vol002.iss001.52

Abstract

Introduction: Retinitis pigmentosa (RP) is a hereditary disorder that diffusely involve photoreceptor and retinal pigment epithelial (RPE). It is characterized by progressive visual field loss and abnormal ERG. Unilateral RP is a rare condition that is usually sporadic. Clinical presentation and ancillary test results are similar to bilateral RP, with only one eye affected. In making the diagnosis of unilateral RP, clinicians must be able to rule out secondary causes, document a normal ERG in the unaffected eye, and follow-up the patient for at least 5 years to rule out bilateral but asymmetric disease. the aim of this case report is how to diagnose a rare case unilateral RP from clinical examination and ancillary tests. Methods: We report a case of a 33-year-old female with slowly progressive restriction of visual field of the left eye in the last one year before admission. Ophthalmological examination of the left eye revealed bone spicules spreading to peripheral fundus. Visual field examination revealed severely constricted visual field of the left eye. The multifocal electroretinogram (mfERG) examination showed severely depressed ERG function with reduced foveal responses. The fellow eye was within normal limit. Results: Patient was diagnosed with unilateral RP and must be followed-up for at least five years to rule out bilateral yet asymmetric disease. Making diagnosis of unilateral RP become one of the challenging case. Clinicians must be able to rule out the secondary causes that also have unilateral pigmentary retinal degeneration. Conclusion: With a good clinical examination and some simple ancillary tests, we could correctly diagnose unilateral RP. However, in this case we still need five years follow up to rule out bilateral RP yet asymmetric disease.
Comparison of Amplitude and Implicit Time Between Jet Electrode, Dencott Electrode and Dawson-Trick-Litzkow Electrode in Multifocal Electroretinography Examination in Adult Syntia Nusanti; Ika Citra Susanti; M. Sidik; Aria Kekalih
International Journal of Retina Vol 5 No 2 (2022): International Journal of Retina (IJRetina) - INAVRS
Publisher : Indonesian Vitreoretinal Society

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35479/ijretina.2022.vol005.iss002.187

Abstract

Introduction: Multifocal electroretinography (ERG) is an examination which measures retinal electrical activity as a response to lighting stimulus and allows simultaneous recording in many topographic locations. Various electrodes have been developed to balance examination accuracy and also patients’ comfort. The objective of this study is to establish normal values of multifocal ERG and to compare the values and the comfort level using Jet, Dencott and DTL electrode in Indonesian Adult. Methods: Through convenient sampling 49 normal Indonesian subjects between 19 and 49 years old were selected. Multifocal ERG amplitudes and implicit time values were measured according to recommendation by the ISCEV. Evaluation consisted of N1 and P1 wave in ring 1 to 5. after the examination, all subjects filled in a questionnaire about comfort level, adopted from the visual analog scale. Result: We observed a statistically significant difference in multifocal ERG normal values between electrode with higher wave amplitudes and longer implicit time in Jet and Dencott electrodes compared to DTL electrodes. Jet and DTL electrodes are more comfortable than Dencott electrodes for Indonesian adults in multifocal ERG. Conclusion: DTL electrodes give the lowest wave amplitude and the shortest implicit time and are the most comfortable electrode compared to Jet and Dencott electrodes, in multifocal ERG in Indonesian adults.
Co-Authors Ari Djatikusumo Aria Kekalih Elyas Aditya Ika Citra Susanti M. Sidik Mohamad Sidik Theresia Yinski Pistari Gondosari