Summary: myopia and hyperopia
What you need to remember in an exam is
| Sight | short | |
| Focus | short | |
| Word | short | |
| Lens in the middle | short |
| Sight | long | |
| Focus | long | |
| Word | long | |
| Lens in the middle | long |
and don't forget My Old Piano (myopia) is Hyperactive (hyperopia).
