The Squint-Scope (Pat. Pend.) – A New Abductor Fixation Device Prototype – Provides Better Access for Inspection of the Temporal Fundus in Children with Large Angle Esotropia
Jon Peiter Saunte, MD; Max Bonne
Rigshospitalet, Ophthalmology Dept., University of Copenhagen, Denmark
Introduction: Squint-Scope: A new fixation device prototype printed on a 3-D printer improves access for eye exam in small children or uncooperative adult patients.
Methods: Presentation of the 3-D printed prototype Squint-Scope a periscope with two mirrors and an integrated base-out prism with an attached iPod. The patient is allowed to watch a cartoon on the iPod through the handheld Squint-Scope , thus the other eye is abducted and available for examination. Squint-Scope can be used in front of both eyes alternatively, driving the non-fixation eye in abduction, and by holding the Squint-Scope in a vertical position, the non-fixating eye is driven in up- or down-gaze; the superior or inferior part of fundus then available for examination.
Results: The Squint-Scope prototype was tested during 6 months in a clinical setting. In children or mentally disabled patients with large angle Esotropia (ET) it was proven helpful in the examination of cornea and retina, especially by allowing examination of the temporal part of retina in esotropic eyes, thus avoiding need for eye-exam under general anesthesia in 3 children.
Discussion: Examination of the anterior segment and fundus in children with large angle ET can be challenging. To keep a good relation with an uncooperative child during an eye – examination can be difficult. When children focuse in this device, the cartoon on show in the iPod can keep children busy for a long time. The prototype is not commercially available at present.
Conclusion: Examination of the anterior segment and fundus in children with large angle ET can be challenging. The prototype of the Squint-Scope
1) Distracts the children and keeps them calm during examination by the ophthalmologist.
2) Provides better access for examination of the anterior segment and fundus in children,
3) Saves time in the clinic and in some cases further eye examinations under general anesthesia can be avoided