Negligence, Malpractice, and Professional Liability
This domain tests the legal elements of a negligence claim and how they attach to optometric practice. Questions often ask whether a bad outcome is negligence, what evidence proves the standard of care, and who is liable.
Core rules and concepts
- The four elements are duty, breach, causation, and harm. All must be proved; a poor outcome without breach is not negligence.
- The standard is that of a reasonably competent optometrist in similar circumstances. Guidelines are evidence of the standard, not automatically the legal standard.
- Causation usually requires proof that the harm would not have occurred but for the breach, and that the breach materially contributed.
- Common claim patterns include failure to refer, missed ocular disease, delayed diagnosis, and inadequate follow-up.
- Liability may be personal, vicarious through an employer, or shared. Limitation periods and apology protections vary by jurisdiction. Professional indemnity insurance is a risk tool, not a defence.
Worked example
A patient reports sudden vision loss and scalp tenderness. The optometrist records 'no change' and does not refer. The patient later is diagnosed with giant cell arteritis and loses sight in one eye. Duty exists; breach is arguable because the red flags warranted urgent referral. Causation requires evidence that earlier referral would probably have prevented or reduced the loss. The reasoning is sequential: duty, breach, causation, then damages. A bad result alone does not complete the chain.
Traps that cost marks
- Calling every complication negligence.
- Altering the record after a complaint, which damages credibility.
- Assuming a signed waiver removes liability for substandard care.
- Forgetting that follow-up and recall failures can be negligent omissions.