If you have a refractive error, refractive surgery is a method for correcting or improving your vision. There are various surgical procedures for correcting or adjusting your eye's focusing ability by reshaping the cornea, or clear, round dome at the front of your eye.
One of these types, and one the most recent strategies used for refractive corrections is Monovision, that corrects one eye for near vision and the other eye for distance vision (usually the dominant eye). LASIK-induced monovision is overall very effective at bringing about good functional near and far vision. In a retrospective study of 82 myopic presbyopes who underwent monovision LASIK, 95% of patients improved to UNVA of J1 or better in the near eye and 100% of patients achieved UDVA of 20/25 or better in the distance eye. The induction of micro-monovision--essentially monovision with a lower degree of anisometropia--has been shown to be equally efficacious.
Monovision allows patient to get rid of glasses for far and near, particularly for those who are over 40s where presbyopia is an issue. The Patient will be able to retain good vision for far at the same time will have no problems for near.
T-ionto CXL for Keratoconus
Corneal crosslinking (CXL) using either a transepithelial approach with iontophoresis (T-ionto CXL) or the standard Dresden protocol provides favorable outcomes in patients with progressive keratoconus.
T-ionto CXL improves keratometry readings in 80% of cases and decreases myopic defocus in 60% of cases. In contrast, standard CXL improves keratometry in 90% of cases and decreases myopic defocus in 33% of cases. Patients experiences stable or improved visual acuity, although faster visual recovery will be noted in T-ionto CXL patients.
T-ionto CXL shows promise. As the field of CXL continues to evolve, it will allow us to not only improve outcomes but also recovery times and safety.