| Rank | Clinic Name | Patient Rating | Country | Lead Doctor | experience | Techniques | Best For | Why It’s Ranked | Accreditations |
|---|---|---|---|---|---|---|---|---|---|
| #1 | 5.0 / 5 (1) | Warsaw, Poland | — | — | — | — | — | — | |
| #2 | 4.5 / 5 (262) | Istanbul, Turkey | — | — | Consultation with an ophthalmologist, Extended analysis of blood | — | — | Joint Commission International , Turkish Medical Association (Türk Tabıplerı Bırliği) | |
| #3 | 4.8 / 5 (8) | Istanbul, Turkey | 8+ years | CT of the paranasal sinuses, Consultation with an ophthalmologist | — | — | — | ||
| #4 | 5.0 / 5 (5) | Bursa, Turkey | — | — | — | — | — | — | |
| #5 | 5.0 / 5 (1) | Bangkok, Thailand | — | — | — | — | — | Global Healthcare Accreditation Program, Joint Commission International | |
| #6 | 5.0 / 5 (3) | Madrid, Spain | 19+ years | — | — | — | Joint Commission International , International Organization for Standardization | ||
| #7 | 4.7 / 5 | Kyiv, Ukraine | — | — | — | — | — | — | |
| #8 | — / 5 | Istanbul, Turkey | — | — | — | Gastroenterology-focused care for autoimmune hepatitis | — | Joint Commission International | |
| #9 | 3.8 / 5 | Ivano-Frankivsk, Ukraine | — | — | — | — | — | — |