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Paediatric aphakic glaucoma
Caitriona Kirwan1, Michael O'Keefe
1Children's University Hospital, University College Dublin, Dublin, Ireland.
Insights
Aphakic glaucoma in children, a complication of congenital cataract surgery, requires lifelong monitoring. Current treatments offer limited success, highlighting the need for improved management strategies for this sight-threatening condition.
Area of Science:
- Ophthalmology
- Pediatric Surgery
Background:
- Aphakic glaucoma is a severe complication following congenital cataract surgery in children.
- Incidence ranges from 15-45%, particularly in infants operated on before 4 weeks of age.
- Open-angle glaucoma is the most common form, often presenting diagnostic challenges in pediatric patients.
Purpose of the Study:
- To review the current understanding and management of aphakic glaucoma in children.
- To evaluate the efficacy of current treatment modalities.
- To emphasize the long-term care requirements for affected children.
Main Methods:
- Review of clinical information regarding aphakic glaucoma.
- Analysis of treatment outcomes for medical and surgical interventions.
- Assessment of the role of intraocular lenses and surgical procedures like trabeculectomy and Seton implantation.
Main Results:
- Intraocular lenses do not appear to protect against glaucoma development; observed lower incidence in pseudophakic eyes is likely due to selection bias.
- Surgical treatments, including trabeculectomy with mitomycin C and Seton implants, are mainstays, with Seton implants showing better short- and long-term success.
- Cyclodestructive procedures are used for refractory cases, but overall surgical success rates range from 14-44%, often necessitating additional medical treatment.
Conclusions:
- Aphakic glaucoma in children is a challenging condition requiring lifelong management.
- Current treatments have variable success rates, and many children experience poor vision and glaucoma control.
- Further research and improved management strategies are crucial to prevent vision loss in these patients.
Context:
Aphakic glaucoma is a serious, sight-threatening complication in children who remain aphakic following congenital cataract surgery. The reported incidence varies from 15% to 45% and it has a higher incidence in small eyes and in babies who undergo surgery before 4 weeks of age. Most cases take the form of open-angle glaucoma. Despite careful monitoring, diagnostic difficulties in children may lead to delayed treatment. Aphakic children require ongoing monitoring, including examinations carried out under general anaesthesia.
Management:
Contrary to earlier optimism, it is unlikely, according to current clinical information, that intraocular lenses provide protection against the development of glaucoma. It is likely that the lower incidence of glaucoma in pseudophakic eyes results from selection bias for lens insertion. Both medical and surgical treatments have a role in glaucoma management. Trabeculectomy with mitomycin C or Seton implantation (glaucoma drainage device) form the mainstay of surgical treatment. The success rate with Seton implants is better in the short term and more promising in the longer term than that of trabeculectomy. Cyclodestructive procedures play a role in refractory glaucoma. Success rates for surgery range from 14% to 44% and many children require additional medical treatment. Children with aphakic glaucoma need lifelong care. Despite our best efforts, many have poor vision, poor glaucoma control and ultimately become blind.
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