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


World Retinoblastoma Week

Posted on 2019-05-14

For seven days after the second Sunday of May, we mark an important week for Know The Glow — World Retinoblastoma Week. World Retinoblastoma Week is an opportunity to raise global awareness about this cancer that affects children’s eyes. For this year’s World Retinoblastoma Week, we want to focus on how important this message is… Read more »

Glow of the Month: Coloboma

Posted on 2019-04-25

Know The Glow is dedicated to protecting the eyesight of children all over the world through advocacy and education. We empower parents, family members, and teachers with knowledge about “the Glow” so that they can spot it in children’s eyes. Spread the word about “the Glow” so more children are  protected! Together we can work… Read more »

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 »