A.76 Wide Field Ophthalmic Photography Stereographic Projection Image Information Object Definition
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## A.76 Wide Field Ophthalmic Photography Stereographic Projection Image Information Object Definition

This Section defines an Information Object to be used with several types of ophthalmic photographic imaging devices that generate wide field OP images, including fundus cameras, slit lamp cameras, scanning laser ophthalmoscopes, stereoscopic cameras, video equipment and digital photographic equipment. It uses the stereographic projection method to represent on-face images of the 3D human retina in 2D on which geometric measurements can be made when the correct mathematical formulae are used.

### A.76.1 Wide Field Ophthalmic Photography Stereographic Projection Image IOD Description

The Wide Field Ophthalmic Photography Stereographic Projection Image IOD specifies a multi-frame image acquired on a digital photographic DICOM modality. This IOD can be used to encode single wide field ophthalmic images and other combinations including cine sequences. This IOD captures the projection of the wide field 2D Pixel image to enable anatomically-correct geometric measurements of the retina by taking into account the curved shape of the eye using a sphere to approximate shape.

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A.75.5 Parametric Map Functional Groups | Home | A.76.2 Wide Field Ophthalmic Photography Stereographic Projection Image IOD Entity-Relationship Model