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Licensed Unlicensed Requires Authentication Published by De Gruyter July 26, 2021

Effect of Jyoti-Trataka on intraocular pressure, autonomic control, and blood glucose in diabetic patients with high-tension primary open-angle glaucoma: a randomized-controlled trial

  • Ali Mohamed Ali Ismail EMAIL logo , Hatem Fawzy Abd Elfatah Abo Saif and Alaa Mohamed El-Moatasem Mohamed



Yoga is used as a complementary therapy to control the symptomatic and complicated consequences of type 2 diabetes mellitus (T2DM) but the effect of Jyoti-Trataka yoga (gazing steadily at a 4-feet away-fixed candle flame) on the intraocular pressure (IOP), autonomic control, and fasting blood glucose (FBG) in T2DM patients with high-tension primary open-angle glaucoma (POAG) was not previously investigated. This study aimed to search the effect of Jyoti-Trataka on IOP, systolic blood pressure (SBP), respiratory rate (RR), diastolic blood pressure (DBP), FBG, and pulse rate (PR) in T2DM patients with bilateral high-tension POAG.


The patients with a 52- to 67-year range and body mass index below 30 kg/m2 were randomly assigned to one of two 30-patient groups, study or control groups. Besides the administered oral hypoglycemic drugs by both groups, the study group only received one month of daily 55-min Jyoti-Trataka session.


A significant decrease (p<0.05) was identified after the comparison between the pre and post SBP, RR, DBP, FBG, IOP of both eyes, and PR in the study group while the control group exhibited no significant changes of all measures (p>0.05). In-favor-of the study group, the between-group post-treatment comparison showed a significant improvement of all measures (p<0.05).


Jyoti-Trataka is a good yogic complementary therapy that can be used to regulate autonomic functions, blood glucose, and IOP in T2DM patients with high-tension POAG.

Corresponding author: Ali Mohamed Ali Ismail, Department of Physical Therapy for Cardiovascular/Respiratory Disorder and Geriatrics, Faculty of Physical Therapy, Cairo University, Giza, Egypt, E-mail:

  1. Research funding: None declared.

  2. Author contributions: All author accepted responsibility for the entire content of this manuscript and approved its submission.

  3. Competing interests: Author state no conflict of interest.

  4. Informed consent: Informed consent was obtained from all individuals included in this study.

  5. Ethical approval: The local Institutional Review Board deemed the study exempt from review (the local ethical committee of faculty of physical therapy, Cairo University approved the protocol of the study


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Received: 2021-01-26
Accepted: 2021-07-15
Published Online: 2021-07-26

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