---
title: HKVisionEye
framework: healthkit
role: symbol
role_heading: Enumeration
path: healthkit/hkvisioneye
---

# HKVisionEye

A value that specifies the eye for a vision prescription.

## Declaration

```swift
enum HKVisionEye
```

## Topics

### Eyes

- [HKVisionEye.left](healthkit/hkvisioneye/left.md)
- [HKVisionEye.right](healthkit/hkvisioneye/right.md)

### Initializers

- [init(rawValue:)](healthkit/hkvisioneye/init(rawvalue:).md)

## Relationships

### Conforms To

- [BitwiseCopyable](swift/bitwisecopyable.md)
- [Equatable](swift/equatable.md)
- [Hashable](swift/hashable.md)
- [RawRepresentable](swift/rawrepresentable.md)
- [Sendable](swift/sendable.md)
- [SendableMetatype](swift/sendablemetatype.md)

## See Also

### Accessing lens specification data

- [eye](healthkit/hkvisionprism/eye.md)
- [amount](healthkit/hkvisionprism/amount.md)
- [angle](healthkit/hkvisionprism/angle.md)
- [horizontalAmount](healthkit/hkvisionprism/horizontalamount.md)
- [horizontalBase](healthkit/hkvisionprism/horizontalbase.md)
- [verticalAmount](healthkit/hkvisionprism/verticalamount.md)
- [verticalBase](healthkit/hkvisionprism/verticalbase.md)
- [HKPrismBase](healthkit/hkprismbase.md)