Projection-simulated ametropia. A model for teaching subjective refraction

Area of Science:

• Ophthalmology
• Optometry
• Medical Education

Background:

• Subjective refraction is a core clinical skill for optometrists and ophthalmologists.
• Traditional teaching methods may not fully convey the patient's perspective during refraction.

Purpose of the Study:

• To develop and evaluate an enhanced simulation for teaching subjective refractometry.
• To provide students with a patient-centered learning experience in refractometry.

Main Methods:

• A simulation using a projector and phoropter to project a visual acuity chart.
• Simulated refractive errors were created using trial lenses attached to the projector.
• Students progressively cleared the projected image to learn subjective refractometry steps.

Main Results:

• The simulation effectively demonstrates the impact of each lens change from the patient's viewpoint.
• Adjustable focus sensitivity allowed for varied learning experiences.
• The system utilizes readily available ophthalmology office equipment.

Conclusions:

• This projector-based simulation is a valuable tool for both demonstrating and practicing subjective refractometry.
• The method enhances student understanding by mimicking the patient's visual experience.