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Fresnel prism use among orthoptists.
The American Orthoptic Journal
|October 15, 2014
Summary
Fresnel prisms are widely used by orthoptists for various visual conditions, including pediatric patients and incomitant deviations. Most practitioners prefer single prism rotation over bilateral Fresnel prisms.
Area of Science:
- Ophthalmology
- Optometry
- Vision Science
Background:
- Fresnel prisms are optical tools used to correct visual alignment issues.
- Understanding current clinical applications is crucial for optimizing patient care.
Purpose of the Study:
- To investigate the contemporary utilization patterns of Fresnel prisms among certified orthoptists.
- To identify common indications, patient populations, and practitioner preferences regarding Fresnel prism use.
Main Methods:
- A cross-sectional survey was distributed to members of the American Association of Certified Orthoptists (AACO).
- The survey comprised seventeen questions focusing on prism application, patient factors, and procedural choices.
Main Results:
- A 36% response rate (n=76) was achieved. Fresnel prisms are frequently used preoperatively (72%) and postoperatively (94%) for misalignment.
- They are extensively applied for incomitant deviations (96%) and near-distance disparity (99%). Patient concerns include reduced vision and distortion.
- Most orthoptists use Fresnel prisms with adults (99%) and children (67%), often rotating a single prism (70%) for vertical and horizontal deviations.
Conclusions:
- Fresnel prisms are integral to the practice of North American orthoptists, with broad application in both adult and pediatric cases.
- Incomitant deviations do not preclude the use of Fresnel prisms.
- A preference exists for employing a single rotating prism over bilateral Fresnel prisms.
