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Published on: August 5, 2017
Ocular manifestations in fetal alcohol syndrome
I M Ribeiro1, P J Vale, P A Tenedorio
1Ophthalmology Department, Hospital Pedro Hispano, Matosinhos, Portugal. isabelsribeiro@hotmail.com
Insights
Ocular abnormalities are common in children with fetal alcohol syndrome (FAS). Retinal fundus anomalies and small optic discs were frequently observed, highlighting the importance of ophthalmologic screening in FAS patients.
Area of Science:
- Ophthalmology
- Pediatrics
- Genetics
Background:
- Fetal Alcohol Syndrome (FAS) is a leading cause of preventable birth defects.
- Ocular abnormalities are frequently associated with FAS, impacting visual development.
- Early identification and management of ocular issues in FAS are crucial for improving patient outcomes.
Purpose of the Study:
- To determine the prevalence of ocular abnormalities in Portuguese children diagnosed with complete Fetal Alcohol Syndrome (FAS).
- To characterize the spectrum of ocular findings in this specific pediatric population.
- To contribute data on the ophthalmologic manifestations of FAS.
Main Methods:
- A comprehensive ophthalmologic examination was performed on a consecutive sample of children with FAS.
- Ocular fundus photography was utilized for detailed retinal and optic disc assessment.
- Measurements such as the distance from optic disc center to fovea relative to optic disc diameter (DM/DD) were analyzed to identify small optic discs.
Main Results:
- The study included 32 children with FAS (mean age 9 years; 72% boys).
- Common ocular findings included short palpebral fissures (81%), strabismus (28%), epicanthus (27%), and blepharoptosis (16%).
- Retinal vessel tortuosity (30%) and optic disc hypoplasia (25%) were noted, with 40% of eyes exhibiting small optic discs (DM/DD ratio).
Conclusions:
- Anomalies of the retinal fundus and external eye structures are the most prevalent ocular findings in children with FAS.
- The observed visual acuity and disease severity were better than in some previous studies, potentially due to patient selection, alcohol consumption patterns, or genetic factors.
- Regular ophthalmologic evaluations are essential for children with FAS to detect and manage associated visual impairments.
Purpose:
To report the prevalence of ocular abnormalities in a group of Portuguese children with a complete fetal alcohol syndrome (FAS).
Methods:
Complete ophthalmologic examination in a sample of consecutive children with FAS. Ocular fundus photography was carried out on the cooperative FAS children and on 25 reference children. Ocular fundus anomalies were recorded by the observation of ocular fundus photography. The ratio between the distance of the center of the disc to the fovea and optic disc diameter (DM/DD) was determined. Small optic disc was defined as a DM/DD ratio above mean control group +1 SD.
Results:
The authors studied 32 children with FAS (mean age: 9 +/- 5 years; 72% boys). The mean corrected visual acuity (VA) was 0.8 +/- 0.2. Refraction ranged from -23.00 to +6.50 spherical equivalent. Ocular findings included short horizontal palpebral fissure (81% of children), strabismus (28% of children), epicanthus (27% of eyes), blepharoptosis (16% of eyes), telecanthus (13% of children), nystagmus (1 child), and cataract (1 eye). Ocular fundus photography analysis showed retinal vessel tortuosity in 30% of the eyes and optic disc hypoplasia in 25%. The mean DM/DD for the control and FAS groups was 2.72 +/- 0.20 and 2.89 +/- 0.25 (p=0.001). Forty percent of the eyes of FAS children had small optic discs.
Conclusions:
The most common ocular findings were anomalies of retinal fundus and minor changes in the outer region of the eyes. The authors noted better VA and less severity of disease than others, which might be due to a different selection of patients, different pattern of alcohol consumption, or genetic differences.
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