graham field 242 Jaeger Eye Chart Instructions
- May 15, 2024
- graham field
Table of Contents
graham field 242 Jaeger Eye Chart
INSTRUCTIONS FOR USE
WARNING: Important! Read and understand these instructions before using
the Jaeger Eye Chart®. If you do not understand any part of these
instructions, contact your medical supply distributor for direction in the use
of this product.
WARNING: GF Health Products, Inc. assumes no responsibility for any damage
or injury caused by improper installation or use of this product.
Visual acuity is the medical term for sharpness of vision. It deals with the
sharpness, or discrimination, of central vision, rather than the extent or
clarity of peripheral vision. The results of visual acuity tests are used to
prescribe eyeglasses or other corrective measures.
The Jaeger Eye Chart® is used to measure near visual acuity. The chart has
print samples of different sizes that are used to determine one’s near vision.
The paragraph with the smallest print is No. 1. The paragraph with the next
larger print is No. 2, and so on, to the largest print (paragraph No. 11). As
you progress to larger print, the lettering size increases for lesser visual
acuity. Persons with normal vision should be able to read the smallest print
in good lighting, at a comfortable reading distance.
Visual acuity is typically measured monocularly rather than binocularly with
the aid of an optotype chart for distant vision, an optotype chart for near
vision, and an occlude to cover the eye not being tested.
The card is held 14 inches (356 mm) from the person’s eye for the test. A
result of 14/20 means that the person can read at 14 inches what someone with
normal vision can read at 20 inches.
- Place the chart at 14 inches from the person’s eye and illuminate the chart at that distance.
- If the patient uses glasses, then the test should be performed using them.
- Place the occlude in front of the eye that is not being evaluated. The first evaluated eye is the one that is believed to see less, or the one that the patient says is seeing less.
- Start first with the big optotypes and proceed to the smaller ones. The patient has to identify every one on the line being presented and communicate it to the physician.
- Change the occlude to the other eye and proceed again from the 4th step.
Consult with your physician for recommended use of this chart for eye testing.
CUSTOMER SUPPORT
Manufactured For:
GF Health Products, Inc. One Graham-Field Way, Atlanta, GA 30340
Made in China
© 2007, GF Health Products, Inc. All Rights Reserved. Graham-Field is a
registered trademark of GF Health Products, Inc.
GF_1242-INS-LAB-RevC24
+1 770.368.4700
Information contained herein is subject to change without notice.
The most current and complete product information can be found on our website.
www.grahamfield.com
References
Read User Manual Online (PDF format)
Read User Manual Online (PDF format) >>