Table 4. Variations of the Pointing Test (Porta Test) depending on the target (type and distance), the pointing technique and the identification method of the dominant eye.
| Study | Sport | Target | Target distance | Pointing technique | Assessment variations |
|---|---|---|---|---|---|
| Dalton, Guillon & Naroo (2015) | Golf | Chart (Michel Guillon vision clinic) | Scalable at any distance | Index finger on both arms alternately |
Evaluators cover both eyes alternately, and subject indicate where the finger and target still aligned (that is the dominant eye) |
| Laborde et al. (2009) | Archery | Any object | >2 m | Index finger on one arm |
Subject close one eye at a time. The eye aligned with the object and the finger is dominant sighting eye |
| Mann, Runswick & Allen (2016) | Criquet | Camera | 3 m | Thumb finger on both arms alternately in specific batting stance |
Photograph |
| Portal & Romano (1988) | Baseball | -- | -- | -- | -- |
| Razeghi (2012) | Darts | Any object | -- | One arm index finger | Subjects close the eyes alternately or draw the finger back to the head |
| Sugiyama & Lee (2005) | Golf | Examiner nose | -- | Index or thumb finger on both arms alternately | The eye with which the finger was aligned was noted |
Note:
--, not reported.