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Primary infantile glaucoma: influence of age at onset
Insights
Early diagnosis of primary infantile glaucoma is crucial. Glaucoma present at birth has a poorer prognosis than that developing within the first three months of life, impacting visual acuity and surgical outcomes.
Area of Science:
- Ophthalmology
- Pediatric Medicine
- Genetics
Background:
- Primary infantile glaucoma is a serious condition affecting infants.
- Early detection and classification are vital for effective management.
- Age at onset significantly influences disease progression and outcomes.
Purpose of the Study:
- To investigate the impact of age at onset on the clinical course and prognosis of primary infantile glaucoma.
- To compare outcomes between glaucoma present at birth versus glaucoma developing within the first three months of life.
Main Methods:
- Retrospective analysis of 39 patients with primary infantile glaucoma.
- Comparison of two groups: glaucoma present at birth (15 patients) and glaucoma developing between birth and 3 months (24 patients).
- Assessment of corneal diameter, visual acuity after 5 years, and number of surgical procedures required.
Main Results:
- Glaucoma present at birth showed significantly larger corneal diameters (60%) and poorer visual acuity (50% < 6/60) after 5 years, requiring more surgeries (avg. 2.0).
- Glaucoma developing within 3 months had smaller corneal diameters (35%) and better visual acuity (20% < 6/60) after 5 years, needing fewer surgeries (avg. 1.3).
Conclusions:
- Primary infantile glaucoma should be classified based on age at onset: present at birth or developing between birth and 3 months.
- This classification is essential due to distinct prognostic differences and management implications.
Abstract:
To determine the influence of age at onset of primary infantile glaucoma, 15 patients whose glaucoma was present at birth were compared with 24 children in whom glaucoma developed between birth and age 3 months. Of the 29 eyes investigated in the former group 60% had a corneal diameter more than 1.5 mm greater than normal at the time of diagnosis, and 50% of the 22 eyes reassessed 5 years later had a visual acuity of less than 6/60; an average of 2.0 surgical procedures had been required to control the intraocular pressure. Of the 46 eyes in the latter group only 35% had a corneal diameter more than 1.5 mm greater than normal at the time of diagnosis, and of the 45 eyes reassessed 5 years later only 20% had a visual acuity of less than 6/60; an average of 1.3 operations had been required to control the intraocular pressure. Primary infantile glaucoma should be classified as either present at birth or developing between birth and age 3 months since the prognosis is so closely related to age at onset.