During hand neutralization, will a minus lens show with motion or against motion?

During hand neutralization, will a minus lens show with motion or against motion?

• A. With
• B. Against
• C. Neutral
• D. Neither

Answer: (A)

During hand neutralization, what you’re looking at is how the retinoscopic reflex moves as you change the refractive power in front of the eye. The direction of movement tells you whether the far point is behind you (with motion) or in front of you (against motion) relative to your working distance. Hyperopes and emmetropes typically show with motion, while myopes that exceed the working distance show against motion. To neutralize a hyperopic eye, you add minus lenses to shift the far point forward toward the retinoscope until there’s no movement. The minus lens used to bring the reflex to neutrality is applied while you observe with motion; you stop when the movement stops. So, during hand neutralization, a minus lens will display with motion as you approach the neutral point.

During hand neutralization, what you’re looking at is how the retinoscopic reflex moves as you change the refractive power in front of the eye. The direction of movement tells you whether the far point is behind you (with motion) or in front of you (against motion) relative to your working distance. Hyperopes and emmetropes typically show with motion, while myopes that exceed the working distance show against motion. To neutralize a hyperopic eye, you add minus lenses to shift the far point forward toward the retinoscope until there’s no movement. The minus lens used to bring the reflex to neutrality is applied while you observe with motion; you stop when the movement stops. So, during hand neutralization, a minus lens will display with motion as you approach the neutral point.