---
title: HKMetadataKeyGlassesPrescriptionDescription
framework: healthkit
role: symbol
role_heading: Global Variable
path: healthkit/hkmetadatakeyglassesprescriptiondescription
---

# HKMetadataKeyGlassesPrescriptionDescription

A description of the glasses prescription.

## Declaration

```swift
let HKMetadataKeyGlassesPrescriptionDescription: String
```

## Discussion

Discussion If a glasses prescription was designed for a particular use, like reading or distance, use this metadata key to describe that use. This metadata key stores a String value.