| Business | Phone |
| Doyle Eye Care 815 Washington St, Michigan City 46360 | (219) 874-3211 |
| Dunes Optical Laboratory 1225 E Coolspring Ave, Michigan City 46360 | (219) 878-5021 |
| Dunes Optical/Medical Group 1225 E Coolspring Ave, Michigan City 46360 | (219) 873-2977 |