Assessing Distance Vision - Two Things to Know

What Can They See?

Using the Tech Optics Printable Distance Chart, you can assess a patient's distance visual acuity. The chart is calibrated for a distance of five(5) feet. Place the chart on a well-lit wall and stand 60 inches away. With their glasses on, the lowest line on which the patient can read 3 out of the 5 letters is the patient's distance visual acuity.

What Do They Want to See?

Determining goal acuity for distance can be a bit of a challenge. A patient's description of their challenges might not translate to an eye chart. They might say something like "I have trouble seeing faces." Here's a list of some common challenges, and their target acuities.

TaskAcuity Required
Seeing Street Signs20/30 - 20/40
Reading Captions on TV20/20 - 20/50
Seeing Detail of Faces20/20
Improved Recognition of People20/100

Calculating Distance Magnification

Find Devices That Will Help

In magnification, more is not better. You're making a trade. When you increase magnification, you reduce field of view. You want the minimum amount of magnification required to achieve the patient's goals so you can maximize their field of view.

CLOSE FOCUS 10X25 MONOCULAR
CLOSE FOCUS 10X25 MONOCULAR
Close Focus Monocular 3x20
$42.95
3.5X SPORTGLASSES NEAR LOUPE
3.5X SPORTGLASSES NEAR LOUPE
TASK VISION 3.5X SPORT GLASSES - BINOCULAR
$49.95
2.5X SPORTGLASSES LOUPE
2.5X SPORTGLASSES LOUPE
TASK VISION 2.5X SPORT GLASSES - BINOCULAR
$30.00
2.8X SPORTGLASSES LOUPE
2.8X SPORTGLASSES LOUPE
TASK VISION 2.8X SPORT GLASSES - BINOCULAR
$30.00
CLOSE FOCUS 10X25 MONOCULAR
CLOSE FOCUS 10X25 MONOCULAR
Close Focus Monocular 10x25
$42.95
CLOSE FOCUS 10X25 MONOCULAR
CLOSE FOCUS 10X25 MONOCULAR
Close Focus Monocular 8x21
$42.95
CLOSE FOCUS 10X25 MONOCULAR
CLOSE FOCUS 10X25 MONOCULAR
Close Focus Monocular 6x16
$42.95
CLOSE FOCUS 10X25 MONOCULAR
CLOSE FOCUS 10X25 MONOCULAR
Close Focus Monocular 4x12
$42.95