An authorization for the provision of glasses and/or contact lenses to a patient.

A unique identifier assigned to this vision prescription.

Allows vision prescriptions to be distinguished and referenced.

The status of the resource instance.

Need to track the status of the resource as 'draft' resources may undergo further edits while 'active' resources are immutable and may only have their status changed to 'cancelled'.

This element is labeled as a modifier because the status contains codes that mark the resource as not currently valid.

The date this resource was created.

Need to record a timestamp for use by both the recipient and the issuer.

A resource reference to the person to whom the vision prescription applies.

Needed to identify the patient for whom the vision prescription has been issued.

A reference to a resource that identifies the particular occurrence of contact between patient and health care provider during which the prescription was issued.

Used in some jurisdictions to link clinical events to claim items.

The date (and perhaps time) when the prescription was written.

Need to record a timestamp for use by both the recipient and the issuer.

Jurisdictions determine the valid lifetime of a prescription. Typically vision prescriptions are valid for two years from the date written.

The healthcare professional responsible for authorizing the prescription.

Need to record the authorizing practitioner.

Contain the details of the individual lens specifications and serves as the authorization for the fullfillment by certified professionals.

Identifies the type of vision correction product which is required for the patient.

Need to identify whether glasses or contacts.

The eye for which the lens specification applies.

Needed to identify which eye the lens specification applies to.

May also appear as OD (oculus dexter) for the right eye and OS (oculus siniter) for the left eye.

Lens power measured in dioptres (0.25 units).

Standard lens prescription measures.

The value is negative for near-sighted and positive for far sighted. Often insurance will not cover a lens with power between +75 and -75.

Power adjustment for astigmatism measured in dioptres (0.25 units).

Standard lens prescription measures.

Adjustment for astigmatism measured in integer degrees.

Standard lens prescription measures.

The limits are +180 and -180 degrees.

Allows for adjustment on two axis.

Standard lens prescription measures.

Amount of prism to compensate for eye alignment in fractional units.

Standard lens prescription measures.

The relative base, or reference lens edge, for the prism.

Standard lens prescription measures.

Power adjustment for multifocal lenses measured in dioptres (0.25 units).

Standard lens prescription measures.

Contact lens power measured in dioptres (0.25 units).

Standard contact lens prescription measures.

Back curvature measured in millimetres.

Standard contact lens prescription measures.

Contact lens diameter measured in millimetres.

Standard contact lens prescription measures.

The recommended maximum wear period for the lens.

Standard contact lens prescription measures.

Special color or pattern.

Standard contact lens prescription measures.

Brand recommendations or restrictions.

Standard lens prescription measures.

Notes for special requirements such as coatings and lens materials.

Standard lens prescription measures.