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CTRI Number  CTRI/2024/06/068652 [Registered on: 11/06/2024] Trial Registered Prospectively
Last Modified On: 30/06/2024
Post Graduate Thesis  Yes 
Type of Trial  Interventional 
Type of Study   Drug 
Study Design  Single Arm Study 
Public Title of Study   To see the effects of ethambutol, which is a drug for treatment of tuberculosis, on the ocular structure and function of patients 
Scientific Title of Study   Effects of ethambutol on the ocular structure and function of patients receiving anti – tuberculous treatment 
Trial Acronym  EMBON 
Secondary IDs if Any  
Secondary ID  Identifier 
NIL  NIL 
 
Details of Principal Investigator or overall Trial Coordinator (multi-center study)  
Name  Dr Mahima Kaushal 
Designation  PG-Junior Resident 
Affiliation  Government Medical College & Hospital, Sector-32, Chandigarh 
Address  Department of Ophthalmology, D Block Level 3, Government medical college and hospital, Sector 32-B, Chandigarh
Department of Ophthalmology, D Block Level 3, Government medical college and hospital, Sector 32-B, Chandigarh
Chandigarh
CHANDIGARH
160020
India 
Phone  7837255884  
Fax    
Email  mahima.kaushal15@gmail.com  
 
Details of Contact Person
Scientific Query
 
Name  Dr Suresh Kumar 
Designation  Professor and Head 
Affiliation  Government Medical College & Hospital, Sector-32, Chandigarh 
Address  Department of Ophthalmology, D Block Level 3, Government medical college and hospital, Sector 32-B, Chandigarh
Department of Ophthalmology, D Block Level 3, Government medical college and hospital, Sector 32-B, Chandigarh
Chandigarh
CHANDIGARH
160020
India 
Phone  9646121588  
Fax    
Email  drsuresh.kumar.gupta@gmail.com  
 
Details of Contact Person
Public Query
 
Name  Dr Suresh Kumar 
Designation  Professor and Head 
Affiliation  Government Medical College & Hospital, Sector-32, Chandigarh 
Address  Department of Ophthalmology, D Block Level 3, Government medical college and hospital, Sector 32-B, Chandigarh
Department of Ophthalmology, D Block Level 3, Government medical college and hospital, Sector 32-B, Chandigarh
Chandigarh
CHANDIGARH
160020
India 
Phone  9646121588  
Fax    
Email  drsuresh.kumar.gupta@gmail.com  
 
Source of Monetary or Material Support  
Government medical college and hospital, Sector 32, Chandigarh India 160020 
 
Primary Sponsor  
Name  Department of Ophthalmology 
Address  GMCH32 Sector 32 Chandigarh India 160020 
Type of Sponsor  Government medical college 
 
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 
Dr Mahima Kaushal  Government Medical College and Hospital Sector32 Chandigarh  Department of Ophthalmology, D Block Level 3, Government medical college and hospital, Sector 32-B, Chandigarh
Chandigarh
CHANDIGARH 
7837255884

mahima.kaushal15@gmail.com 
 
Details of Ethics Committee  
No of Ethics Committees= 1  
Name of Committee  Approval Status 
Institutional Ethics Committee (GMCH Chandigarh)  Approved 
 
Regulatory Clearance Status from DCGI  
Status 
Not Applicable 
 
Health Condition / Problems Studied  
Health Type  Condition 
Patients  (1) ICD-10 Condition: A179||Tuberculosis of nervous system, unspecified, (2) ICD-10 Condition: A188||Tuberculosis of other specified organs, (3) ICD-10 Condition: A199||Miliary tuberculosis, unspecified, (4) ICD-10 Condition: A159||Respiratory tuberculosis unspecified,  
 
Intervention / Comparator Agent  
Type  Name  Details 
Comparator Agent  Oral administration of Ethambutol 15-25 mg/kg/day for 6 months  Ethambutol drug has been known to cause ocular toxicity which may be irreversible. The use of ethambutol in anti-tuberculous treatment for tuberculosis patients is a part of the daily fixed dose regimen. The study will evaluate ocular structure function of the patients before being started on ethambutol and compare with the status of ocular stucture and function at 2 months and 4 months while the patients are taking ethambutol. 
 
Inclusion Criteria  
Age From  18.00 Year(s)
Age To  80.00 Year(s)
Gender  Both 
Details  Newly diagnosed patients of Tuberculosis (Clinically or Microbiologically proven/ Sputum smear positive) from the age of 18 years and above – receiving daily regimen of ATT (2HRZE+4HRE regimen) 
 
ExclusionCriteria 
Details  Category II, III, IV Tuberculosis patients
Moderate-to-severe Glaucoma
Hereditary Optic Neuropathy
Ischemic Optic Neuropathy
Traumatic Optic Neuropathy
HIV patients on Anti-Retroviral therapy
Ocular TB
Tubercular meningitis
Any systemic medical condition (e.g., cognitive impairment, Parkinson’s disease, Alzheimer’s disease, Multiple sclerosis and any other neurological or musculoskeletal disease) which might preclude the patient from giving reliable results on investigations 
 
Method of Generating Random Sequence    
Method of Concealment    
Blinding/Masking    
Primary Outcome  
Outcome  TimePoints 
Visual acuity
Best corrected visual acuity
Visual fields
Colour vision
VEP
OCT RNFL
OCT MACULA
Contrast sensitivity 
first visit at the start of TB treatment
second visit at 2 months
third visit at 4 months
 
 
Secondary Outcome  
Outcome  TimePoints 
Deterioration in ocular function or structure in terms of colour vision
contrast sensitivity
visual acuity
visual fields
VEP
oct scans 
2 months & 4 months 
 
Target Sample Size   Total Sample Size="110"
Sample Size from India="110" 
Final Enrollment numbers achieved (Total)= "Applicable only for Completed/Terminated trials"
Final Enrollment numbers achieved (India)="Applicable only for Completed/Terminated trials" 
Phase of Trial   N/A 
Date of First Enrollment (India)   25/06/2024 
Date of Study Completion (India) Applicable only for Completed/Terminated trials 
Date of First Enrollment (Global)  Date Missing 
Date of Study Completion (Global) Applicable only for Completed/Terminated trials 
Estimated Duration of Trial   Years="1"
Months="0"
Days="0" 
Recruitment Status of Trial (Global)
Modification(s)  
Not Yet Recruiting 
Recruitment Status of Trial (India)  Open to Recruitment 
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   the patients will get done an array of non-invasive investigations on initiation of anti-tuberculosis treatment and on follow ups, to detect changes in their ocular structure and function, which we can reasonably anticipate keeping the increased dose and extended regimen of anti-tuberculous treatment. 
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