Specialising in Paediatric Vision Testing
Specialising in Paediatric Vision Testing

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Kay Double-sided LogMAR Letter Chart

£37.00

25 in stock

The Kay double-sided letter chart is ideal for screening children’s vision, using 6 Sloan letters, optimal crowding and exact acuity comparison between the eyes.

25 in stock

SKU: KLETCHART3M-DVN Category: Tags: , , , , , , ,

Description

The Kay double-sided LogMAR letter chart is ideal for screening children‘s vision at 3 metre test distance.

This cost-effective chart comprises 6 Sloan letters presented at optimal crowding (half letter width separation), and comes with a matching card.

The chart has LogMAR sizing from 1.0 to -0.2 with 5 letters per row (except 1.0 size). At each acuity size LogMAR and VAR scores are displayed on the left side of each chart, and Snellen and Decimal equivalent scores are displayed on the right.

Test each eye with a different side of the chart for exact comparison of their visual acuity, as the same letters are used at each acuity size in a different combination.

There are two holes at the top of the chart and a hanging cord is provided. Made from robust plastic, the chart is wipe-clean using soap and water.

Dimensions: 52cm x 32cm x 0.2cm

Country of origin: GB

Details

Weight 0.450 kg
Dimensions 52 × 32 × 0.2 cm

Distance

This chart is to be used at 3 Metre (10 feet). This test distance is considered best to achieve good concentration and cooperation from young children. There should be no significant difference in acuities at these distances for most children.
If testing at 6 metres with our three metre chart, the notation must be changed as follows:
Snellen fraction:
Change the numerator figure from 3 to 6, so 3/6 size picture at three metres becomes 6/6 at 6 metres.
LogMAR:
Take 0.3 from the score shown on the chart, so 0.3 Size at three metres becomes 0.0 size if tested at 6 metres.
Download our conversion chart.

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