There are 11 words that start with 'opht'.
| ophthalmia | ophthalmic |
| ophthalmias | ophthalmology |
| ophthalmologic | ophthalmoscope |
| ophthalmoscopy | ophthalmologies |
| ophthalmologist | ophthalmoscopes |
| ophthalmoscopic | |
Note: These 11 words that start with 'opht' are found from the USA & Canada version of the tournament Scrabble word list.