During a Snellen visual-acuity test a patient reads the 20/40 line but misidentifies two letters. What is the correct way to record this finding in the chart?
Record the visual acuity as 20/40 +2 to indicate the missed letters
Record the visual acuity as 20/40-2
Record the visual acuity as 20/30 since two letters were missed
Visual acuity is documented as the smallest line the patient can read while noting any letters missed. A minus sign (-) followed by the number missed is added. Because the patient read the 20/40 line but missed two letters, the result is written as 20/40-2. Writing only 20/40 omits essential information; 20/30 is incorrect because that line was not read; using a plus sign (+) is reserved for extra letters identified on the next smaller line, not missed letters.
Ask Bash
Bash is our AI bot, trained to help you pass your exam. AI Generated Content may display inaccurate information, always double-check anything important.
Why is the Snellen test important for assessing vision?
Open an interactive chat with Bash
What does 20/40 mean in a Snellen test result?
Open an interactive chat with Bash
Why is the minus sign (-) used instead of a plus (+) in the Snellen test result?
Open an interactive chat with Bash
AAMA CMA
Clinical Competency
Your Score:
Report Issue
Bash, the Crucial Exams Chat Bot
AI Bot
Loading...
Loading...
Loading...
Pass with Confidence.
Nursing and Medical Assistants Package
You have hit the limits of our free tier, become a Premium Member today for unlimited access.
Military, Healthcare worker, Gov. employee or Teacher? See if you qualify for a Community Discount.
Monthly
$9.99
$9.99/mo
Billed monthly, Cancel any time.
3 Month Pass
$14.99
$4.99/mo
One time purchase of $14.99, Does not auto-renew.
BEST DEAL
Lifetime Pass
$29.99
One time purchase, Good for life.
What You Get
All Nursing and Medical Assistants Package plans include the following perks and exams .