Physical examination maneuver

Physical Exam

Red Reflex

also known as Brückner test
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How to Perform

Darken the room and set the ophthalmoscope to a round white light. From about an arm's length away, look through the ophthalmoscope and shine the light onto both pupils or one pupil followed by the other. A normal red reflex is a uniform, bright reddish-orange glow filling the pupil; dark spots, a blunted or absent reflex, or asymmetry between the two eyes are abnormal.

How to Interpret

Showing all 4 findings

Anisometropia

Asymmetric Brückner reflex
Rule in
Very helpful
Rule out
Somewhat helpful
Evidence:Moderate

Media Opacity

Dark spots, streaks, or shadows silhouetted against an otherwise red reflex
Rule in
Very helpfulDerived CI
Rule out
Very helpfulDerived CI
Evidence:Moderate

Serious Eye Disease

Absent, diminished, or white red reflex in a newborn
Rule in
InconclusiveWide CI
Rule out
Not helpfulWide CI
Evidence:Strong

Strabismus

Asymmetric Brückner reflex
Rule in
Very helpful
Rule out
Minimally helpful
Evidence:Moderate

References

  • Subhi Y, Schmidt DC, Al-Bakri M, Bach-Holm D, Kessel L. Diagnostic test accuracy of the red reflex test for ocular pathology in infants: a meta-analysis. JAMA Ophthalmol. 2021;139(1):33-40. doi:10.1001/jamaophthalmol.2020.4854. PMID 33180103.
  • Amitava AK, Kewlani D, Khan Z, Razzak A. Assessment of a modification of Bruckner's test as a screening modality for anisometropia and strabismus. Oman J Ophthalmol. 2010;3(3):131-135. PMID 21120049. PMC2992160.
  • Mndeme FG, Mmbaga BT, Kim MJ, Sinke L, Allen L, Mgaya E, Bastawrous A, MacLeod D, Burton MJ, Gilbert C, Bowman R. Red reflex examination in reproductive and child health clinics for early detection of paediatric cataract and ocular media disorders: cross-sectional diagnostic accuracy and feasibility studies from Kilimanjaro, Tanzania. Eye (Lond). 2021;35(5):1347-1353. doi:10.1038/s41433-020-1019-5. PMID: 32546747. PMC8182787.
  • American Academy of Pediatrics Section on Ophthalmology; American Association for Pediatric Ophthalmology and Strabismus; American Academy of Ophthalmology; American Association of Certified Orthoptists. Red reflex examination in neonates, infants, and children. Pediatrics. 2008;122(6):1401-1404.
  • Brückner R. Exakte Strabismusdiagnostik bei ½–3 jährigen Kindern mit einem einfachen Verfahren, dem "Durchleuchtungstest". Ophthalmologica. 1962;144:184-198.

Research last updated September 9, 2026.