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Published on: February 15, 2022
The spontaneous resolution of primary congenital glaucoma
Karina Nagao1, Léon-Paul Noël, Marie-Eve Noël
1COE-RIO, Rio de Janeiro, Brazil.
Insights
Primary congenital glaucoma (PCG) can spontaneously resolve in some children. Ocular findings in these cases include large corneas and abnormal angles, with normal intraocular pressures.
Area of Science:
- Ophthalmology
- Pediatric Ophthalmology
- Glaucoma Research
Background:
- Primary congenital glaucoma (PCG) is a severe form of infantile glaucoma.
- Spontaneous resolution of PCG is a rare phenomenon.
- Understanding its characteristics is crucial for diagnosis and management.
Purpose of the Study:
- To document the ocular characteristics of children experiencing spontaneous resolution of PCG.
- To differentiate findings in spontaneously resolving PCG from treated or untreated cases.
Main Methods:
- Retrospective review of 356 PCG patient records.
- Detailed analysis of nine cases with documented spontaneous PCG resolution.
- Clinical examination of ocular findings, including corneal diameter, Haab's striae, intraocular pressure, anterior chamber depth, lens clarity, and angle morphology.
Main Results:
- Spontaneous resolution was observed in nine patients, typically after four months of age.
- Affected eyes presented with large corneas and Haab's striae.
- Intraocular pressures were normal, with deep anterior chambers and abnormal filtration angles characteristic of PCG.
- Angle abnormalities were less severe than in fellow eyes requiring treatment.
Conclusions:
- Objective clinical evidence supports spontaneous PCG resolution.
- The exact mechanism remains unknown but may involve continued development of milder angle abnormalities.
- Anterior segment findings resemble treated PCG, but with normal intraocular pressures and stable optic nerves.
Purpose:
To describe the ocular findings in a series of children with spontaneous resolution of primary congenital glaucoma (PCG).
Methods:
The medical records of 356 patients with PCG were reviewed. Nine patients with spontaneous resolution of PCG were studied. Fourteen of 18 eyes possessed evidence of early glaucoma, were found to have normal intraocular pressures, and were clinically classified as having spontaneous resolution of PCG. None of the eyes with spontaneous resolution received surgery or any glaucoma medication.
Results:
Spontaneous resolution of PCG in all nine patients was recognized after 4 months of age. At the time of diagnosis, large corneas were observed in all affected eyes and Haab's striae in 10 of 14 eyes. Intraocular pressures were normal in 14 eyes. In all 14 eyes, the anterior chambers were deep, the lenses were clear, and the angles were abnormal with the typical appearance of PCG. The eyes with spontaneous resolution of PCG possessed angle abnormalities that were less severe compared to three fellow eyes that required glaucoma treatments.
Conclusion:
The occurrence of spontaneous resolution of PCG in these patients is supported by objective clinical evidence. The explanation for this spontaneous resolution is unknown. Its mechanism could be related to continued postnatal development of the angle structures in eyes possessing milder angle abnormalities. The anterior segment findings in patients with spontaneous resolution of PCG are similar to those of patients with treated PCG, the intraocular pressures are normal, the optic nerve damage is stable, and the filtration angles possess mild or moderate abnormalities.
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