Microperimetry – A New Tool for Assessing Retinal Sensitivity in Macular Diseases
Journal Title: Journal of Clinical and Diagnostic Research - Year 2017, Vol 11, Issue 7
Abstract
Introduction: Macular disease is the leading cause of low vision in the Western world. Drusen and pigmentary irregularities are common among the rural Northern Indian population. The disease process leads to loss of central vision, metamorphopsia, macropsia or micropsia and colour vision defect. Aim: To study the retinal sensitivity changes in macular diseases using microperimetry. Materials and Methods: It was an observational study, conducted in the Department of Ophthalmology at a rural tertiary care hospital. This study was started from December 2014 until June 2016, in all patients with macular disease above the age of 20 years attending the outpatient department. Microperimetry was done for 84 eyes of 52 patients with macular disease. Mean retinal Sensitivity (MS) and fixation stability was evaluated. The statistical analysis of mean retinal sensitivity, central 2˚ and 4˚ fixation was done by calculating the mean and standard deviation using 95% confidence interval. Results: The range of age was between 20-81 years. Majority were 32 males (62%) and 20 females (38%). Out of the 84 eyes studied, majority of the macular disease were Age-Related Macular Degeneration (AMD) (50%). Rest 50% were other macular diseases. The mean retinal sensitivity (dB) shown by microperimetry was 10.83 in AMD, 9.12 in Cystoid Macular Oedema (CME), 10.34 in Epiretinal Membrane (ERM), 10.74 in Pigment Epithelial Detachment (PED), 8.96 in Central Serous Chorioretinopathy (CSCR), 6.43 in macular dystrophy, 7.15 in Lamellar Hole (LMH), 9.8 in Pseudomacular Hole (PMH), 3 in geographic atrophy, 11.1 in macular telangiectasia, 5.6 in Berlin oedema, 12.3 in macular scar and 15.2 in haemorrhage in macula. The study showed 64% of the eyes had stable 2˚ central fixation, 35% had relatively unstable fixation and 1% had unstable fixation. No significant correlation between retinal sensitivity and retinal thickness in AMD was found. Conclusion: This study shows that microperimetry can be a useful tool for objective evaluation of macular function and progression of the disease.
Authors and Affiliations
Memota Laishram, Krishnagopal Srikanth, AR Rajalakshmi, Swathi Nagarajan, G Ezhumalai
Keywords
Related Articles
- EP ID EP355541
- DOI 10.7860/JCDR/2017/25799.10213
- Views 54
- Downloads 0
Knowledge and Practice of Small Family Norm among Married Women in an Urban Area of Tamil Nadu
ABSTRACT Introduction: India is the second most populous country in the world having a rapidly growing population. To strike a balance between population growth and resource usage, strategies like family planning came in...
Psychosis in a Case of Dandy-Walker Syndrome: A Case Report
Dandy Walker Syndrome (DWS) is a congenital malformation with brain abnormalities, intellectual disabilities, epilepsy and visible structural changes in particular brain structures. We present here a case of psychosis in...
Ultrasound Guided Percutaneous Injection of Thrombin: Effective Technique for Treatment of Iatrogenic Femoral Pseudoaneurysms
Introduction: Arterial pseudoaneurysms are well known iatrogenic complication of percutaneous angiographic or interventional vascular procedures. In the past, the definitive treatment option was open surgical repair whic...
Vascular Endothelial Growth Factor as an Angiogenic Marker in Malignant Astrocytoma and Oligodendroglioma: An Indian Scenario
Introduction: The role of Vascular Endothelial Growth Factor (VEGF) in angiogenesis has been extensively studied in gliomas, such as astrocytoma and oligodendrogliomas, worldwide. However, there is limited information av...
Feeding Behaviour and its Association with Stress: A Review
ABSTRACT Feeding behaviour is a complex behaviour in the present daily life which is regulated by many mechanisms. So many factors influence the feeding behaviour, among the most common one, is stress. So in the present...