Hyperbaric Related Myopia and Cataract Formation


4.7 out of 5 (14 Reviews)



Post Assessment Questions


Start Date

1 Sep 2023

Last Review Date

1 Sep 2023

Expiration Date

31 Aug 2026

Estimated Time To Finish

60 Minutes

Need Help?  If you have a system or content concerns, please contact support@statpearls.com

Activity Description

Oxygen has been shown to be harmful to many tissues in the body via the formation of oxygen free radicals through normal metabolic processes. The higher PO2 used in hyperbaric oxygen therapy is thought to increase the production of these harmful, reactive species. The body has natural defense mechanisms to protect against free radical damage. Superoxide dismutase, a protective enzyme, acts to remove superoxide radicals and other reactive products of metabolism. Under hyperoxic conditions, it is thought that the increased production of these reactive species overwhelms the body's natural defense mechanisms which lead to oxygen toxicity and cellular damage. The toxic effects of hyperbaric oxygen have damaging effects on the eye, particularly the lens. The most commonly reported symptoms are eyelid twitching, blurry vision, and visual-field disturbances. Many of the reported symptoms have been attributed to oxygen toxicity of the lens which leads to various complications such as myopia and the formation and progression of cataracts. The majority of ocular side effects are reversible, but some of the effects of prolonged therapy can be irreversible. This activity reviews the hyperbaric related myopia and cataract formation and discusses the role of the interprofessional team in educating patients on the potential for these side effects.

Target Audience

This activity has been designed to meet the educational needs of physicians, physician associates, nurses, pharmacists, and nurse practitioners.

Learning Objectives

At the conclusion of this activity, the learner will be better able to:

  • Review the potential damaging effects of oxygen on the tissues.
  • Describe the potential damaging effects of oxygen on the eye.
  • Outline the reversible eye related side effects of oxygen.
  • Explain hyperbaric related myopia and cataract formation and address the role of the interprofessional team in educating patients on the potential for these side effects.


StatPearls, LLC requires everyone who influences the content of an educational activity to disclose relevant financial relationships with ineligible companies that have occurred within the past 24 months. Ineligible companies are organizations whose primary business is producing, marketing, selling, re-selling, or distributing healthcare products used by or on patients. All relevant conflict(s) of interest have been mitigated. Hover over contributor names for financial disclosures. Others involved in planning this educational activity have no relevant financial relationships to disclose.

Commercial Support: This activity has received NO commercial support.

Continuing Education Accreditation Information

In support of improving patient care, StatPearls, LLC is jointly accredited by the Accreditation Council for Continuing Medical Education (ACCME), the Accreditation Council for Pharmacy Education (ACPE), and the American Nurses Credentialing Center (ANCC) to provide continuing education for the healthcare team.


Physicians and Physician Associates: StatPearls, LLC designates this enduring material for a maximum of 1.00 AMA PRA Category 1 Credit(s)TM. Physicians and PAs should only claim credit commensurate with the extent of their participation in the activity.

Royal College of Physicians and Surgeons of Canada: Through an agreement between the Accreditation Council for Continuing Medical Education and the Royal College of Physicians and Surgeons of Canada, medical practitioners participating in the Royal College MOC Program may record completion of accredited activities registered under the ACCME’s “CME in Support of MOC” program in Section 3 of the Royal College’s MOC Program.

Please consult your professional licensing board for information on the applicability and acceptance of continuing education credit for this activity.

Method of Participation and Credit

  1. Register for the activity.    
  2. Review the target audience, learning objectives, and disclosure information.
  3. Study the educational content of the enduring material.
  4. Choose the best answer to each activity test question. To receive credit and a certificate, you must pass the test questions with a minimum score of 100%.
  5. Complete the post-activity assessment survey.

If you have concerns regarding the CE/CME system, please contact support@statpearls.com.


This educational activity was planned and produced in accordance with the ACCME Standards for Integrity and Independence in Accredited Continuing Education. Faculty may discuss investigational products or off-label uses of products regulated by the FDA. Readers should verify all information before employing any therapies described in this educational activity.

The information provided for this activity is for continuing education purposes only and is not meant to substitute for the independent medical/clinical judgment of a healthcare provider relative to diagnostic and treatment options of a specific patient’s medical condition. The information presented does not necessarily reflect the views of StatPearls or any commercial supporters of educational activities on statpearls.com. StatPearls expressly disclaims responsibility for any adverse consequences resulting directly or indirectly from information in the course, for undetected error, or through a participant's misunderstanding of the content.

Unapproved Uses of Drugs/Devices: In accordance with FDA requirements, the audience is advised that information presented in this continuing education activity may contain references to unlabeled or unapproved uses of drugs or devices. Please refer to the FDA-approved package insert for each drug/device for full prescribing/utilization information.

Cancellation Policy: Please see the cancellation policy. StatPearls, LLC reserves the right to cancel any course due to unforeseen circumstances.




thanks much!

Jeffrey D. on 12/1/2020

Michael K. on 3/13/2021

Wesley V. on 3/26/2021

Daniel B. on 10/5/2021

shannon p. on 11/27/2021

Narayan K. on 1/23/2022

Robin O. on 4/28/2022

James M. on 5/9/2022

Daniel B. on 12/5/2022

Jose C. on 1/25/2023

Jacinta S. on 10/26/2023

Denis W. on 12/5/2023

Carolyn B. on 12/4/2023

Tammy Z. on 1/10/2024

Unlimited Physician CME

Stay up to date on the latest medical knowledge with 6673 CME activities. In these online self-assessment activities, read our reference articles and test your knowledge with more than 7923.5 hours of CME.

Learn About Lifetime CME

Single Activity

Take this single activity

$49 1 activity

6 Month Unlimited Physician CME

Access to all the Unlimited Physician CME activities in all specialties.

$399 per half year per user

1 Year Unlimited Physician CME

Access to all the Unlimited Physician CME activities in all specialties.

$599 per 1 year per user