Know The Glow ®


Know the Glow is a global nonprofit leader in identifying preventable glow-related childhood eye diseases.

We empower parents to see their child’s vision in a new light by raising awareness about The Glow (medically known as leukocoria) and encouraging them to make sure their young children receive comprehensive eye exams by an eye specialist.

When caught early, more than 80% of all childhood blindness is preventable


Share Your Glow Story

80% of the time a parent
or family member is the
first to identify “The Glow”
in a child’s eye.


80% of all childhood blindness is
preventable or curable.


1 in 80 children may show the glow
before age nine.

Glow Videos

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Glow Identification

Know The Glow


Diseases common to “The Glow”:

  • Amblyopia
  • Brown Syndrome
  • Cataract
  • Choroidal Osteoma
  • Coats’ Disease
  • Coloboma
  • Congenital Cataract
  • FEVR
  • Intraocular Medulloepithelioma
  • Norrie Disease
  • PHPV
  • Pinguecula
  • Refractive Error
  • Retinal Detachment
  • Retinal Dysplasia
  • Retinopathy of Prematurity (ROP)
  • Retinoblastoma
  • Strabismus
  • Toxocariasis
  • Trauma


know the glow jesse berry

Know The Glow Interviews Dr. Jesse Berry

Posted on 2019-04-09

Dr. Jesse Berry is Associate Professor of Ophthalmology, Clinical Scholar, and the Associate Director of Ocular Oncology at the USC Eye Institute at the University of Southern California and Children’s Hospital Los Angeles. In addition to having previously served as Associate Residency Program Director for the Los Angeles County + University of Southern California (LAC+USC)… Read more »

know the glow vision issues in young children

How to recognize vision issues in young children

Posted on 2019-03-28

Vision issues can occur at any age.  While it’s easier to diagnose issues when children or teenagers are old enough to articulate them, it is much more difficult to pinpoint vision issues in young children who are not yet speaking. That is the “Catch-22” — the sooner vision issues are diagnosed, the better the prognosis… Read more »

know the glow norrie disease

Glow of the Month: Norrie Disease

Posted on 2019-03-12

Know The Glow is dedicated to saving children’s eye sight, one photograph at a time! “The Glow” is a yellow-white reflection that can appear in photographs of a child’s pupils. This “Glow” could potentially be a sign that there is something wrong with the child’s eyes. In fact, over 20 different eye conditions and diseases… Read more »