Visual Optics Practice Test

To find the far point vergence for a left eye requiring a distance correction of -3.50 diopters (D) and measured at 14.33 mm from the cornea, we first need to convert the distance from millimeters to meters since vergence is typically expressed in diopters, which is the inverse of the meter distance.

The distance of 14.33 mm is equal to 0.01433 meters. Since we are dealing with a negative correction (indicating myopia), we will denote this value as -3.50 D.

The formula for calculating the vergence (V) at a certain distance (d) is given by:

\[ V = \text{Refractive Error} + \frac{1}{d} \]

In this context:

1. The refractive error (the power of the lens needed for correction) is -3.50 D.

2. The distance to the far point from the cornea is -14.33 mm or -0.01433 m.

Now converting this into a vergence:

\[ V = -3.50 + \frac{1}{-0.01433} \]

Calculating the second term:

\[ \frac{1}{-