Ophthalmology Book

http://www.fpnotebook.com/

Red Reflex

Aka: Red Reflex, Leukokoria, White Pupil, Bruckner Test, Cat's Eye Reflex
  1. Indications
    1. Screening in all children under age 3 years
  2. Technique
    1. Pupil visualized with direct ophthalmoscope (lens power set to 0) at 2 distances
      1. Each eye at 12-18 inches (30-45 cm)
      2. Both eyes together at 2-3 feet (60-90 cm)
    2. Perform in darkened room
    3. Pupil Dilation if reflex poor (e.g. pigmented fundus)
      1. Tropicamide (Mydriacyl) 1% one drop per eye or
      2. Phenylephrine (Neo-Synephrine) 2.5% one drop/eye
  3. Findings: Normal
    1. Light reflex normally appears red (Red Reflex)
    2. Normal if red-orange or even orange-yellow
  4. Findings: Abnormal - Leukokoria (White Pupil reflex)
    1. Precautions
      1. Leukokoria requires urgent ophthalmology referral
    2. Retinoblastoma (most important and urgent)
      1. Most common childhood intraocular tumor
    3. Corneal Opacity
    4. Hyphema or other anterior chamber fluid
    5. Coloboma
      1. Full-thickness eye defect
    6. Congenital Cataract
      1. Opacified or clouded lens (often related to underlying systemic or genetic disorder)
      2. Often results in absence of Red Reflex (as opposed to white reflex)
    7. Vitreous opacity
      1. Primary persistent hyperplastic vitreous (persistent fetal vasculature)
        1. Hyaline vascular system and Embryonic vitreous fail to involute completely
      2. Vitreous Hemorrhage
        1. Due to Trauma or coagulopathy
    8. Retinal disease
      1. Retinal Detachment
      2. Retinopathy of Prematurity
      3. Toxocariasis
        1. Granulomas involving Retina
      4. Chorioretinitis
        1. Inflammation of the Retina and Choroid (e.g. Cytomegalovirus, Toxoplasmosis)
      5. Coat's Disease
        1. Congenitally abnormal sub-Retinal vessels with progressive Vision Loss
        2. Associated with subretinal fluid and lipid collection
  5. References
    1. Berson (1987) Ophthalmology Study Guide, AAO, p. 106
    2. Bell (2013) Am Fam Physician 88(4): 241-8 [PubMed]
    3. Cheng (1990) Pediatric Ann 19(6): 376-86 [PubMed]
    4. Essman (1992) Am Fam Physician 46(4):1243-52 [PubMed]
    5. Mills (1999) Am Fam Physician 60(3):907-16 [PubMed]
    6. Shields (1991) Retina 11:232-43 [PubMed]
    7. Simon (2001) Am Fam Physician 64(4):623-8 [PubMed]

Red reflex (C0278244)

Concepts Finding (T033)
SnomedCT 301958008, 43408002
English red reflex, Finding of red reflex (finding), Fundus reflex, Red reflex, Observation of red reflex, Red reflex present, RR - Red reflex present, RR - Red reflex, Finding of red reflex, Red reflex (finding)
Spanish hallazgo relativo al reflejo rojo (hallazgo), hallazgo relativo al reflejo rojo, cono de luz, reflejo del fondo de luz, reflejo luminoso, reflejo rojo (hallazgo), reflejo rojo
Sources
Derived from the NIH UMLS (Unified Medical Language System)


Bruckner test (C1302982)

Concepts Diagnostic Procedure (T060)
SnomedCT 400922006
English Bruckner test (procedure), Bruckner test
Spanish prueba de Bruckner (procedimiento), prueba de Bruckner
Sources
Derived from the NIH UMLS (Unified Medical Language System)


You are currently viewing the original 'fpnotebook.com\legacy' version of this website. Internet Explorer 8.0 and older will automatically be redirected to this legacy version.

If you are using a modern web browser, you may instead navigate to the newer desktop version of fpnotebook. Another, mobile version is also available which should function on both newer and older web browsers.

Please Contact Me as you run across problems with any of these versions on the website.

Navigation Tree