Digital Retinopathy Screening Using Photographic Flash Exposure Measurement (for retinal vascular assessment)
This test involves capturing images of your retina under specific lighting conditions to check for signs of blood vessel changes, which may indicate underlying health concerns like diabetes or high blood pressure.
["A retinal photo check can help detect early signs of eye or systemic diseases that require attention."]
Key facts at a glance
- LOINC
- 65900-3
- Short code
- Retinal digital photog flash setting
- Synonyms
- Retinal digital photog flash setting
- Category
- chemistry
- Sample
- serum
- Container
- Red-top tube (SST)
- Units
- N/A
- Ref low
- 44
- Ref high
- 147
- Fasting
- false
- Population
- adult
- Sex
- all
- Age range
- 18–65 years
- Method
- retinal-digital-photography
- CPT
- 84075
- SNOMED
- 27550007
- Specimen volume
- 5 mL
- Stability
- Room temperature: 4h, Refrigerated: 24h, Frozen: 7d
- Hemolysis max
- 500
- Lipemia max
- 1000
- Icterus max
- 500
- TAT
- 4–24 hours
- Order
- routine
What This Test Measures
The test uses a digital camera to take photos of your retina under controlled flash lighting. The flash setting helps standardize the exposure to better visualize blood vessels and any potential abnormalities, such as microaneurysms or hemorrhages.
Why It’s Done
This procedure is typically part of a comprehensive eye exam, often performed during routine check-ups or when symptoms like blurred vision, frequent flashes of light, or vision loss are present. It helps healthcare providers monitor conditions like diabetic retinopathy, hypertensive retinopathy, or other retinal diseases.
How It’s Performed
You’ll lie down with your eyes dilated using eye drops to widen your pupils. A photographer will take clear images of your retina using a specialized camera. The flash ensures consistent lighting for accurate assessment.
What to Expect After
After the exam, your eyes may remain slightly sensitive to light for a short time. You’ll receive a report summarizing any findings, which your healthcare provider will discuss with you. No special follow-up is required unless further testing is recommended.
Reference range
Adult: 44-147 U/LN/A
No special preparation required. Avoid fatty meals before the test if possible.
Clinical interpretation
How abnormal results are interpreted and what conditions they suggest.
Clinical Significance
Frequently asked questions
How does this test help in diagnosing or managing health conditions?
What if my test results show abnormalities?
Can I prepare for this test?
Sources
- 1
- 2Lab Tests OnlineSource
- 3
Click any link to access the full source. PubMed Central (PMC) links provide free full-text access.
This information is for educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment.
This content is for general informational and educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment. Always seek the guidance of a qualified healthcare provider with any questions you have about a medical condition, and never disregard professional medical advice or delay seeking it because of something you read here.
If you think you may have a medical emergency, call your local emergency number or go to the nearest emergency department immediately.
Medically reviewed by WellAlly Editorial Team Last reviewed August 16, 2026. · Read our editorial policy