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CTRI Number  CTRI/2025/08/092227 [Registered on: 01/08/2025] Trial Registered Prospectively
Last Modified On: 01/08/2025
Post Graduate Thesis  No 
Type of Trial  Observational 
Type of Study   Case Control Study 
Study Design  Single Arm Study 
Public Title of Study   Evaluating the Blue on Yellow Chart as a Screening Tool for Early Detection of Diabetic Macular Edema 
Scientific Title of Study   Evaluation Of Blue On Yellow Chart as a Screening Tool for Early Detection of Diabetic Macular Edema 
Trial Acronym  Nil 
Secondary IDs if Any  
Secondary ID  Identifier 
NIL  NIL 
 
Details of Principal Investigator or overall Trial Coordinator (multi-center study)  
Name  Dr Namratha  
Designation  Associate Professor 
Affiliation  Sankara Eye Hospital 
Address  Dept. of Optometry, Sankara Academy of Vision, Sankara Eye Hospital, Varthur Main Road, Bengaluru
Dept. of Optometry, Sankara Academy of Vision, Sankara Eye Hospital, Varthur Main Road, Bengaluru 560037 Karnataka, India
Bangalore
KARNATAKA
560037
India 
Phone  9986266576  
Fax    
Email  namratha.hegde@sankaraeye.com  
 
Details of Contact Person
Scientific Query
 
Name  Dr Namratha  
Designation  Associate Professor 
Affiliation  Sankara Eye Hospital 
Address  Dept. of Optometry, Sankara Academy of Vision, Sankara Eye Hospital, Varthur Main Road, Bengaluru
Dept. of Optometry, Sankara Academy of Vision, Sankara Eye Hospital, Varthur Main Road, Bengaluru Karnataka India 560037
Bangalore
KARNATAKA
560037
India 
Phone  9986266576  
Fax    
Email  namratha.hegde@sankaraeye.com  
 
Details of Contact Person
Public Query
 
Name  Dr Namratha  
Designation  Associate Professor 
Affiliation  Sankara Eye Hospital 
Address  Dept. of Optometry, Sankara Academy of Vision, Sankara Eye Hospital, Varthur Main Road, Bengaluru

Bangalore
KARNATAKA
560037
India 
Phone  9986266576  
Fax    
Email  namratha.hegde@sankaraeye.com  
 
Source of Monetary or Material Support  
Sankara Eye Hospital,Varthur Main Road,Kundalahalli Signal,Bangalore,Karnataka,India 560037 
 
Primary Sponsor  
Name  Sankara Eye Hospital 
Address  Sankara Eye Hospital,Varthur Main Road,Kundalahalli Signal,Bangalore,Karnataka,India 560037 
Type of Sponsor  Private hospital/clinic 
 
Details of Secondary Sponsor  
Name  Address 
Nil  NIL 
 
Countries of Recruitment     India  
Sites of Study  
No of Sites = 1  
Name of Principal Investigator  Name of Site  Site Address  Phone/Fax/Email 
DrNamratha Hegde  Sankara Eye Hospital  Department Of Optometry,Sankara College Of Optometry,Sankara Eye Hospital,Varthur Main Road,Kundalahalli Gate,Bangalore.
Bangalore
KARNATAKA 
09986266576

namratha.hegde@gmail.com 
 
Details of Ethics Committee  
No of Ethics Committees= 1  
Name of Committee  Approval Status 
Sankara Eye Hospital  Approved 
 
Regulatory Clearance Status from DCGI  
Status 
Not Applicable 
 
Health Condition / Problems Studied  
Health Type  Condition 
Patients  (1) ICD-10 Condition: H30-H36||Disorders of choroid and retina,  
 
Intervention / Comparator Agent  
Type  Name  Details 
Intervention  NIL  NIL 
Comparator Agent  NIL  NIL 
Intervention  Nil  Nil 
Intervention  Nil  Nil 
 
Inclusion Criteria  
Age From  40.00 Year(s)
Age To  60.00 Year(s)
Gender  Both 
Details  Conformed Diagnosis of Diabetic Macular Edema in atleast one eye.
Literate patient who can able to read Diatance and Near Vision chart in english 
 
ExclusionCriteria 
Details  Any Ocular Diseases that could affect Visual Acuity or Color Perception-Optic neuropathy or with Severe Dry Eye 
 
Method of Generating Random Sequence   Not Applicable 
Method of Concealment   Other 
Blinding/Masking   Investigator Blinded 
Primary Outcome  
Outcome  TimePoints 
The study will provide evidence on the efficacy of the Blue on Yellow Visual Acuity CHart in detecting Diabetic Macular Edema,much before the patient perceives symptoms.  One time 
 
Secondary Outcome  
Outcome  TimePoints 
The Findings may lead to a more sensitive and user friendly Screening Tool for monitoring Macular Edema  One time 
 
Target Sample Size   Total Sample Size="326"
Sample Size from India="326" 
Final Enrollment numbers achieved (Total)= "186"
Final Enrollment numbers achieved (India)="186" 
Phase of Trial   N/A 
Date of First Enrollment (India)   20/08/2025 
Date of Study Completion (India) 06/06/2026 
Date of First Enrollment (Global)  Date Missing 
Date of Study Completion (Global) Date Missing 
Estimated Duration of Trial   Years="1"
Months="0"
Days="0" 
Recruitment Status of Trial (Global)   Not Applicable 
Recruitment Status of Trial (India)  Completed 
Publication Details   N/A 
Individual Participant Data (IPD) Sharing Statement

Will individual participant data (IPD) be shared publicly (including data dictionaries)?  

Response - NO
Brief Summary  

An Observational study on Evaluation of Blue on Yellow Chart as a Screening Tool for Early Detection of Diabetic Macular Edema with an Objective of to Evaluate the Sensitivity and Specificity of a Blue on Yellow Distance and Near Visual acuity chart in detecting the Diabetic Macular Edema and to Correlate the Visual Acuity measured with novel Blue on Yellow chart with the thickness measured with OCT. The patients are recruited based on the inclusion and exclusion criteria set.The initial assessments include Demographic data,Detailed Medical and Ophthalmic history,BCVA Measurment with LogMAR,Color vision,visual acuity with Blue on Yellow Distance and Near vision chart,Anterior and Posterior segment evaluation,OCT for Macular Thickness.

This study Aims to Evaluate the Effectiveness of Blue on Yellow Visual Acuity chart for Distance and Near as a Screening Tool for Diabetic Macular Edema.

 
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