Resultados refractivos y visuales en pacientes implantados con lentes intraoculares ajustables por luz

Resumo

In conclusion, the light adjustable intraocular lenses are able to correct refractive errors after cataract surgery in a range of ± 2 diopters both spherical and cylindrical. It is a safe technology, providing highly predictable results stable over time. ABSTRACT The purpose of this thesis is to evaluate if the light adjustable lenses allow to correct residual refractive errors after cataract surgery effectively, reproducibly, safely and stably. We have studied their effectiveness to correct refractive defects after cataract surgery, the predictability of the treatments applied, safety and long-term stability. We have followed 77 eyes implanted with light adjustable lenses by using a standard phacoemulsification technique. At 15 days after implantation, we performed different treatments for adjusting the residual refractive errors (neutral treatments, myopic, hyperopic, astigmatic-myopic and astigmatic-hyperopic) and finally the lock-in treatments. We have measured both corrected and uncorrected visual acuity, refractive errors expressed as sphere, cylinder and M, J0, J45. We examined the retina of patients by ophthalmoscopy and optical coherence tomography and revised other ocular structures such as the corneal endothelium in order to detect possible adverse events secondary to lens implantation or the applied treatment. Patients were followed during 4 years with the intention to evaluate changes in the behaviour of the lens over time. Surgery was performed similarly to other intraocular lenses, not registering complications. The average uncorrected visual acuity at one month after treatment was 0.93 ± 0.20, higher than that obtained with monofocal intraocular lenses, reaching corrected visual acuity of 1.03 ± 0.19. A 76.62%of patients had uncorrected visual acuity after treatment equal or better than they best previous to the adjustments. A 25.97% of patients improved one or more lines their best postoperative visual acuity. The 67,99% of the patients had a residual spherical equivalent between a range of ± 0.5D. The safety and efficacy rates were 1.10 and 0.99 respectively. There have been no significant complications in any of the patients. The posterior capsular opacity percentage was similar to other published series.