Test created with the aim of simplifying the detection of stereopsis in children.

This test measures near visual acuity through proportionally spaced lines (logMAR) on the front side and 25% and 50% spaced lines on the back side. Answers printed on cards; contains training tables and instructions. Board size: 20.3 x 25.4 cm.

It checks the ability to distinguish between strong and light contrasts. Also useful for detecting the regression, stationarity or progression of cataracts.

Book of 10 plates - with figures

The examination of dyschromatopsia requires a high level of sensitivity and specificity.

This series of tables makes it possible to detect colour-blindness in people who cannot read and abnormalities in colour perception from an early age.
The tables are designed with simple geometric shapes, as the person examined may not be able to understand complicated shapes.

The test provides a quick and accurate assessment of possible congenital dyschromatopsias.

In most cases, the abnormality in colour perception consists of a lack of red-green distinction, which can be of two types:
- protan, absolute (protanopia) or partial (protanomaly)
- deutane, absolute (deuteranopia) or partial (deuteranomaly)

Book of 24 plates

The examination of dyschromatopsia requires a high level of sensitivity and specificity.

This series of tables makes it possible to detect colour-blindness in people who cannot read and abnormalities in colour perception from an early age.
The tables are designed with simple geometric shapes, as the person examined may not be able to understand complicated shapes.

The test provides a quick and accurate assessment of possible congenital dyschromatopsias.

In most cases, the abnormality in colour perception consists of a lack of red-green distinction, which can be of two types:
- protan, absolute (protanopia) or partial (protanomaly)
- deutane, absolute (deuteranopia) or partial (deuteranomaly)

SLOAN near vision optometric table.

- Working distance: 40 cm
- Dimensions: 18 x 23 cm

LANG I TEST

LANG'S STEREOTEST® represents the current standard for stereotests based on random dots, without the need for 3D glasses and with high sensitivity and specificity for stereopsis.

The test combines random dots and a lens grating and is designed for rapid screeening of binocular vision in all age groups, including very young children. The card is presented at a reading distance and the patient is asked what they see, while eye movements are observed.

Figure recognition is only possible for subjects with full stereopsis, while patients with amblyopia and strabismus (even at a reduced angle) fail the test.

LANG's STEREOTEST® I shows three stereograms with disparities of 1200, 600 and 550 arcsec.

Test created with the aim of simplifying the detection of stereopsis in children.

Book of 38 plates

The examination of dyschromatopsia requires a high level of sensitivity and specificity.

This series of tables makes it possible to detect colour-blindness in people who cannot read and abnormalities in colour perception from an early age.
The tables are designed with simple geometric shapes, as the person examined may not be able to understand complicated shapes.

The test provides a quick and accurate assessment of possible congenital dyschromatopsias.

In most cases the abnormality in colour perception consists of a lack of red-green distinction, which can be of two types:
- protan, absolute (protanopia) or partial (protanomaly)
- deutane, absolute (deuteranopia) or partial (deuteranomaly)

Designed to measure visual acuity by means of a standard line test and three tests with lines spaced 50, 25 and 12.5 per cent apart respectively; reveals difficulties in seeing close details clearly. Table size: 20.3 x 25.4 cm.