Free ABO-NCLE Flashcards

• Part 1: Vertex Power Calculation. • Target plane is moving 5 mm closer to the eye (d = -0.005 m). • Formula: F_new = (F)/(1 - dF) = (-14.00)/(1 - (-0.005 × -14.00)) = (-14.00)/(1 - 0.07) = (-14.00)/(0.93) ≈ -15.05 D. • The ordered power must be increased to -15.00 D to maintain the same effective correction at the closer vertex distance. • Part 2: Optical Advantages. * Bringing the lens closer to the eye increases the patient's field of view through the clear optical zone. • It also reduces the severe minification associated with high-minus lenses, making the retinal image larger and improving overall visual acuity and contrast perception.