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Outline
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Pediatric Ophthalmology for the 21st Century
  • Monte D. Mills, MD
  • Director of Ophthalmology
  • The Children’s Hospital of Philadelphia
  • August 30, 2006
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Relevant pediatric eye and vision issues relevant in 2006
  • Causes of severe visual impairment in children of Ukraine, 2006*
    • Refractive, degenerative myopia – 32.7%
    • Cataract, aphakia – 13.2%
    • Retinopathy of prematurity – 13.2%
    • Congenital eye anomaly, microphthalmia, microcornea, coloboma, nystagmus – 11.8%
    • Optic nerve atrophy – 8.8%
    • Glaucoma – 2.9%
    • * Serhiy Rykov, Chief Ophthalmologist, Ukraine


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Pathology identified during first year of life causing severe visual impairment as a result of:
    • Hereditary factors – 35%
    • Pathological factors – 15%
    • Prematurity – 10%
    • Infections or chronic diseases during pregnancy – 9%
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Number of blind children/million, by cause and level of development
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Why relevant in 2006?
  • Advances in scientific understanding of pathology
  • New technology, treatments, innovation
  • Iatrogenic problems introduced by new medical technology (prematurity)
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Pediatric cataracts
  • Congenital cataract
    • Hereditary, genetic factors
    • Sporadic
    • Associated with other ocular abnormalities
  • Acquired, childhood
    • Metabolic diseases
    • Iatrogenic, drug-induced
    • Trauma




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Requirements for effective cataract blindness prevention, detection and treatment
  • Early detection – red reflex eye screening in all newborns and at each health assessment
    • Simple screening with direct ophthalmoscope for quality, symmetry of pupillary reflex
    • Referral of all failures to qualified ophthalmologist for full exam
  • Early surgery
    • Qualified, experienced pediatric eye surgeon
    • Anesthesia
    • Intraocular lens implantation or contact lens
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Principles of treatment
  • Early surgical treatment
  • cataract aspiration with automated vitrectomy/capsulectomy
    • With contact lens visual rehabilitation, < 2 years
    • With intraocular lens implantation, > 2 years
    • Re-operation for capsular opacification, glaucoma, strabismus
  • Close followup with aggressive amblyopia treatment
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Frontiers/future developments in the detection and treatment of pediatric cataracts
  • Improved detection and treatment of complications, glaucoma, capsule opacification, inflammation
  • Improved surgery technique – automated aspiration/vitrectomy
  • Intraocular lenses in younger patients, improved lenses, small incision foldable lenses
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Pediatric glaucoma
  • Congenital glaucoma
    • Hereditary, genetic
    • Associated with other ocular abnormalities
  • Acquired glaucoma in childhood
    • Associated with cataract surgery (iatrogenic)
    • Associated with medication (iatrogenic)
    • Trauma


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Requirements for effective glaucoma blindness prevention, detection and treatment
  • Early detection –
    • Cloudy cornea
    • Corneal enlargement (buphthalmos)
  • Early treatment
    • Topical medications
    • Early surgery
    • Anesthesia
  • Close observation on treatment


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Congenital glaucoma treatment
  • Medications useful temporarily
  • Surgery usually definitive
    • Angle surgery (goniotomy, trabeculotomy)
    • Seton surgery (glaucoma tube shunt)
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Goniotomy
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Frontiers/future developments in the detection and treatment of pediatric glaucoma
  • Improved screening and early detection and treatment
  • Improved topical medications
  • Improved surgery technique – microscopic angle surgery, tube shunt surgery


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Retinopathy of Prematurity
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Retinopathy of prematurity
  • Neovascular retinopathy leading to retinal detachment and vision loss
  • Occurs exclusively in infants born prematurely, during the first few months of life
  • Ablative treatment is effective, but must be used at specific point in disease course
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"Epidemic of ROP in areas..."
  • Epidemic of ROP in areas with developing medical infrastructure/ middle income countries
    • Improvement in survival of premature infants
    • Iatrogenic problem, possibly worsened by overuse of supplimental oxygen
    • Need for access, training, treatment
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ROP as a cause of childhood blindness in high income countries
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ROP as a cause of childhood blindness in middle income countries (2)
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ROP blindness risk
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Characteristics of babies with “severe” ROP in UK, USA and Canada
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Characteristics of babies with “severe” ROP in low / middle income countries
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"Characteristics of infants with severe..."
  • Characteristics of infants with severe retinopathy of prematurity in countries with low, moderate, and high levels of development: implications for screening programs.
  • Gilbert C, Fielder A, Gordillo L, Quinn G, Semiglia R, Visintin P, Zin A; International NO-ROP Group.
  • Pediatrics 2005 115: e518-525


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Requirements for effective ROP prevention, detection and treatment
  • Prevention
  • Detection
  • Treatment
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Requirements for effective ROP prevention, detection and treatment
  • Prevention
    • Experienced neonatology
    • Monitored use of oxygen in neonates
    • Best possible medical care – obstetrics and prenatal care, surfactant, antibiotics, ventilation
  • Detection
    • Effective screening program to examine children in neonatal units (indirect ophthalmoscopy) beginning at 31-32 weeks postconceptual age
    • Experienced examiners with time to screen in hospitals on regular basis
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ROP Natural History
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Current screening criteria (USA)
  • <1500 gm at birth
  • < 32 week postconceptual age at birth
      • *American Academy of Pediatrics, February 2006, http://aappolicy.aappublications.org/cgi/content/abstract/pediatrics;117/2/572

  • Screening criteria should be adjusted depending on epidemiology of ROP in each country, Ukraine may need different guidelines


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Potential approaches to access/screening issues
  • Training programs for training pediatric and general ophthalmologists for neonatal screening
  • Potential non-ophthalmologist (non-physician?) screening
  • Photoscreening with remote reading (telemedecine)
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Fundus photo before and after laser photocoagulation
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Requirements for effective ROP prevention, detection and treatment
  • Treatment
    • Laser photocoagulation of peripheral avascular retina in advanced stages, prior to retinal detachment
    • Potential future medical treatment with anti-neovascular drugs (Avastin, etc)
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Future developments in detection and treatment of retinopathy of prematurity
  • Future improvements in neonatology
  • Improving access to screening and treatment
    • Training, potential alternative screeners, photos with remote screening
  • Improving access to laser photocoagulation
  • Potential medical treatments
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Conclusions
  • Pediatric cataracts, glaucoma and retinopathy of prematurity are responsible for a large proportion of preventable childhood blindness
  • Early detection and access to current technology can improve outcomes in children with cataracts, glaucoma and retinopathy of prematurity
  • Recent and potential future developments in our management of these problems will continue to improve outcomes
  • Continued focus on access, training and clinical innovation are important to reduce childhood blindness
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