Original Series ETDRS Chart 1

$65.00

Only standardized format accepted in studies sponsored by the National Eye Institute.

Designed for use in clinical studies and low vision

Clear

Description

Only standardized format accepted in studies sponsored by the National Eye Institute.

Designed for use in clinical studies and low vision evaluations where accurate, repeatable visual acuity measurements are required.

Lines are of equal difficulty.

Geometric progression in letter size from line to line.

Letter size is only variable.

Can be wall-mounted.

ETDRS charts use a series of three charts with different permutations of optotypes. ETDRS Chart 1 is used to test the right eye’s acuity. ETDRS Chart 2, and Chart R are used to test the visual acuity in the left eye and both eyes, respectively. The use of three ETDRS eye charts to test the visual acuity of one patient prevents memorization and helps increase accuracy and consistency in results.

Additional information

Translucent Chart

Yes

Cord

No

Chart Size (Inches)

24.5×25.5 in

Chart Notations - Snellen

20/200 to 20/10

Chart Notations - LogMAR

1.0 to -0.3

Chart Notations - Decimal

.10 to 2.00

Chart Notations - 13 foot

13/131 to 13/6.5

Chart Notations - 4 meter

4/40 to 4/2

Chart Notations - 6 meter

6/60 to 6/3

Chart Notations - Munit

40M to 2M

Chart Distance

2m / 6.5ft, 2.5m / 8.3ft, 3m / 10ft, 4m / 13ft

Utilize with which Cabinet

2425

Utilize with a Cabinet

Yes

Contrast Level

High

Patient Type

General/Literate

Optotype

SLOAN

ETDRS Format

Yes

Optotype Arrangement

ETDRS Format – Logarithmic

MassVAT Chart

No