đại diện kỹ thuật số. Mô hình này có thể được trực tiếp chuyển giao cho một Lal hoặc mẫu một nghịch đảo tương tự như vậy có thể được chiếu xạ để Lal sửa sai này. (Ảnh của Calhoun Vision Inc.) | Chapter 17 The Light-Adjustable Lens 169 enhanced visual function that remains stable. Since aberrations in the cornea do not change with age and potential progressive crystalline lens aberrations are eliminated with lensec tomy wavefront treatments to the LAL should not change with time and should produce a stable aberration-free optical system throughout the patient s lifetime. Fig. . Digital light delivery device DLDD . Courtesy of Calhoun Vision Inc. Fig. . A tetrafoil spatial intensity pattern is represented digitally. This pattern can be directly transferred to a LAL or an inverse pattern could likewise be irradiated to the LAL to correct this aberration. Courtesy of Calhoun Vision Inc. 170 FINAL COMMENTS Cataract surgery has come a long way since the time of intracapsular extraction and large-incision extracapsular surgery. Incremental advancements in phacoemulsification technology have allowed ophthalmologists to offer their patients the safest and most rapidly visually rehabilitative cataract surgery ever available. Emphasis now has shifted to improving IOL technology. Research into newer multifocal and accommodative IOLs will be instrumental in allowing ophthalmologists to provide not only state-of-the-art cataract surgery but also to offer refractive lens exchanges to their refractive surgery patients as a means of treating distance-refractive errors and the presbyopic condition. Current limitations in cataract and refractive lens surgery stem from the inability to guarantee emmetropia in even the most experienced hands. In addition to many other options the LAL offers an incredible opportunity for ophthalmologists to deliver excellent postoperative visual acuities. IOLs will now have the potential of being finetuned following surgery to provide not only emmetropia but also multifocality and higher-order aberration-free corrections if the patient desires. The early reversible nature of the LAL prior to the final .
