Pre‑operative scans are the blueprint for your post‑operative vision. Biometry measures the length and optical power of your eye to select lens strength. Corneal topography maps curvature and astigmatism, guiding toric lens decisions and incision planning. Retinal optical coherence tomography detects macular or nerve conditions that could limit potential vision, ensuring expectations remain realistic and any disease is managed appropriately.
Whole‑eye aberrometry and endothelial cell counts add further detail: aberrations can influence lens choice and night‑vision expectations, while endothelial assessment helps tailor surgical technique to protect corneal clarity. When combined, these tests reduce refractive surprises and support safer, more predictable outcomes.
What this means for you
- High‑quality scans are not “extras” — they are central to designing your visual result.
- Abnormal findings may change the recommended lens type or refractive target.
Questions to ask
- “Which scans will you perform before surgery, and why?”
- “Did any of my scans suggest limitations I should know about?”
References
- Omoto MK, Torii H, Masui S, et al. Ocular biometry and refractive outcomes using two swept‑source optical coherence tomography biometers. Scientific Reports. 2019;9(1):6557.
- Vincent C. Patient Safety. 2nd ed. Oxford: Wiley‑Blackwell; 2010.
