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[Oculo-orbital topometry studied by X-ray computed tomography in strabismic children]
1APAS, Centre chirurgical de la Porte de Pantin, Paris.
Agressologie: Revue Internationale De Physio-Biologie Et De Pharmacologie Appliquees Aux Effets De L'Agression
|January 1, 1991
Summary
Scanner imaging reveals moderate orbital development abnormalities and horizontal oculomotor muscle dyssynergies, including medial muscle overactivity, in children with squint. This method aids in pre-operative assessment for strabismus surgery.
Area of Science:
- Ophthalmology
- Pediatric Ophthalmology
- Oculomotor Physiology
Background:
- Squint (strabismus) affects numerous children, impacting visual development.
- Understanding the underlying oculomotor and orbital factors is crucial for effective treatment.
- Current diagnostic methods may not fully capture subtle developmental or functional anomalies.
Purpose of the Study:
- To investigate orbital development and oculomotor muscle function in squinting children using scanner imaging.
- To identify specific abnormalities associated with horizontal strabismus.
- To evaluate the utility of scanner examination in pre-operative planning for squint correction.
Main Methods:
- Scanner examination of the oculo-orbital region in 20 children diagnosed with squint.
- Precise measurement of orbital structures to assess development.
- Analysis of horizontal oculomotor muscle function, particularly during induction movements.
Main Results:
- Moderate abnormalities in orbital development were observed in all participants.
- Asynergies in horizontal oculomotor muscles were demonstrated, notably isolated hypermotricity of medial ocular muscles.
- The examination provided detailed insights despite potential lens irradiation.
Conclusions:
- Scanner examination is a valuable tool for identifying subtle orbital and oculomotor abnormalities in squinting children.
- Findings suggest a link between orbital development variations and oculomotor muscle dyssynergies in strabismus.
- This imaging technique can significantly contribute to pre-operative evaluation and surgical planning for pediatric strabismus.