**8. Conclusion**

This introduction chapter gives a brief review about the history of development of OCT. OCT is a non-invasive revolutionary imaging modality with vast growing technology. Starting from the past, the progression in wavelengths, sensitivity, reproducibility and decrease scan acquisition time are evolving. Recent advances in technology make OCT indispensable tool in everyday practice and accepted as the standard of care. OCTA is giving new information that FA and ICGA cannot provide. iOCT and handheld models are considered the next big step in OCT development.
