A Novel Method of measuring metamorphopsia in macular diseases using computerised D charts
Journal Title: Journal of Medical Science And clinical Research - Year 2018, Vol 6, Issue 9
Abstract
Purpose: This study examines the ability of the computerised D chart to detect and quantify metamorphosis in different macular disorders and compare the results with other clinical measurements such as visual acuity, Amsler chart and Optical Coherence Tomography (OCT). Methodology: A software version of D charts uses octagonal grids with varying eccentricities from 0.5 to 12 degrees from fixation. Subjects do fixation by focussing at the centre of the D-charts and locate the area of distortion by touching the screen. The sector was highlighted by a blue line and later the software determines MScore, Mtotal, Marea for each ring. D Chart measures were undertaken on 30 subjects and the results were compared to LogMAR visual acuity, Amsler chart and OCT. Results: Computerised D-Chart is easy to use and there was no correlation between MScore and VA, MScore and CSF (p>0.05). There was a correlation between MScore and Amsler. (r=0.806 p=0.000163). Both cases showed similarities in the structural and functional details of metamorphopsia. Conclusion: D charts allowed quantification of metamorphopsia in macular disease patients with variable visual acuities. It is one of the most important diagnostic tools to map distortion and central field loss and may be helpful in assessing ongoing macular diseases.
Authors and Affiliations
Dr Hema M Mer
Keywords
Related Articles
- EP ID EP515353
- DOI -
- Views 79
- Downloads 0
Fluconazole Susceptibility of Candida Species
Aim: The aim of this study was to evaluate the susceptibility profile of Candida species isolated from clinically relevant specimens by micro broth dilution method to fluconazole. Setting of the study: The study was cond...
Comparative Distribution of Squamous Cell Carcinoma in India - A 7 Year Study
The present study was a retrospective and prospective study of skin tumours during the period September 2004 to September 2011. Total 133 cases presented as skin tumours of these 53 cases (39.84%) were histologically dia...
Mortality Profile of Cervical Spinal Cord Injury in South India – A Cross Sectional Study
Background: Road traffic accidents are increasing as an alarming annual rate of 3 per cent in India experiencing an increasing trend in spinal injuries. The Cervical spine injury is becoming very common and causing many...
MRI and Arthroscopic Correlation in Meniscal Injuries of Knee
The knee joint is a common site for injury, mainly due to trauma and sports related injuries.1 Diagnostic arthroscopy is a vital tool, providing diagnostic precision to 87-96%. However, it is an invasive procedure with t...
Effects of Quetiapine and Olazapine (D2 Antagonist) on Alcohol Dependence and Alcohol Withdrawal in Swiss Albino Mice
Today, alcohol is widely consumed and it is also the most commonly abused drug in the world, a cause of vast medical and societal costs. Alcohol in low to moderate amounts relieves anxiety and fosters a feeling of wellbe...