Red reflex (original) (raw)
The red reflex refers to the reddish-orange reflection of light from the back of the eye, or fundus, observed when using an ophthalmoscope or retinoscope. The reflex relies on the transparency of optical media (tear film, cornea, aqueous humor, crystalline lens, vitreous humor) and reflects off the fundus back through media into the aperture of the ophthalmoscope. The red reflex is considered abnormal if there is any asymmetry between the eyes, dark spots, or white reflex (Leukocoria).
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| dbo:abstract | The red reflex refers to the reddish-orange reflection of light from the back of the eye, or fundus, observed when using an ophthalmoscope or retinoscope. The reflex relies on the transparency of optical media (tear film, cornea, aqueous humor, crystalline lens, vitreous humor) and reflects off the fundus back through media into the aperture of the ophthalmoscope. The red reflex is considered abnormal if there is any asymmetry between the eyes, dark spots, or white reflex (Leukocoria). Generally, it is a physical exam done on neonates and children by healthcare providers but occasionally occurs in flash photography seen when the pupil does not have enough time to constrict and reflects the fundus known as the red-eye effect. This is a recommended screening by the American Academy of Pediatrics and American Academy of Family Physicians for neonates and children at every office visit. The objective is to detect ocular pathology that needs early intervention and ophthalmology referral to prevent visual abnormalities and more serious, but rarely, death. It is difficult to assess the effectiveness of the technique due to the low incidence of some of the pathology the red reflex is used to detect. For example, retinoblastoma, a neuroblastic tumor that can cause a dampened or even white reflex, occurs in 1 in every 20,000 children. Regardless of the effectiveness, it is a fast, inexpensive, and noninvasive exam that could identify ocular pathology which with early identification can alter the course of the disease. (en) |
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| dbo:wikiPageWikiLink | dbr:Antimuscarinic dbr:Aqueous_humour dbr:Vitreous_body dbr:Leukocoria dbr:Congenital_cataract dbr:Cornea dbr:Strabismus dbr:Fundus_(eye) dbr:Tapetum_lucidum dbr:American_Academy_of_Family_Physicians dbr:American_Academy_of_Pediatrics dbr:Familial_exudative_vitreoretinopathy dbr:Lens_(anatomy) dbr:Retinal_detachment dbr:Pupil dbr:Red-eye_effect dbc:Ophthalmology dbr:Refractive_error dbr:Ophthalmologist dbr:Eye dbr:Retinal_birefringence_scanning dbr:Ophthalmoscope dbr:Sympathomimetics dbr:Retinoscope dbr:Pupillary_membranes dbr:Neonates |
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| dcterms:subject | dbc:Ophthalmology |
| rdfs:comment | The red reflex refers to the reddish-orange reflection of light from the back of the eye, or fundus, observed when using an ophthalmoscope or retinoscope. The reflex relies on the transparency of optical media (tear film, cornea, aqueous humor, crystalline lens, vitreous humor) and reflects off the fundus back through media into the aperture of the ophthalmoscope. The red reflex is considered abnormal if there is any asymmetry between the eyes, dark spots, or white reflex (Leukocoria). (en) |
| rdfs:label | Red reflex (en) |
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| prov:wasDerivedFrom | wikipedia-en:Red_reflex?oldid=1050244058&ns=0 |
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| is foaf:primaryTopic of | wikipedia-en:Red_reflex |