![]() Historically, clinicians have shied away from promoting multifocal IOLs to myopes, as they are often highly accustomed to wearing glasses. Hyperopes have generally been the low-hanging fruit for multifocal IOLs they often begin wearing correction later in life and are sometimes strongly motivated to return to freedom from glasses. For example, a patient who wants to hike, shop online and read, all without glasses, might be well served by the three focal points of the PanOptix.Ī patient’s visual status is another important factor. Patient selection should also include an individual’s hobbies and habits. Researchers have studied correlations between personality traits and satisfaction with multifocal IOLs and found patients with dominant traits of conscientiousness and agreeableness have the highest satisfaction. ![]() 3 Ideally, your patient should have a positive approach to life and be strongly motivated to see without glasses. Personality type is the key predictor of success with any multifocal IOL, including PanOptix. Keep in mind, only corneal astigmatism (i.e., keratometry) justifies a toric IOL, not total refractive astigmatism. PanOptix is available in toric powers, with half-diopter steps that correspond to corneal astigmatism from roughly 1.00D to 2.50D. Good vision in any multifocal IOL requires tight astigmatism control. The PanOptix’s trifocal design makes this decision less important, and the three foci correspond well to most common tasks that require sharp acuity, such as driving, computer use and reading ( Figures 1 and 2). As a result, surgical centers have had to match the appropriate lens to the patient’s preferred near point. Previously, multifocal IOLs available in the United States created a bifocal optical system (with the ability to extend depth of focus in some cases). The lens distributes 44% of incoming light energy to the far focus, 22% each to the intermediate and near foci, while 12% is lost. 1 The PanOptix has three focal points: emmetropia, +1.67D (60cm, or 24”) and +2.50D (40cm, or 16”). The anterior surface has an inner 4.5mm diameter diffractive zone and is designed with a slight negative spherical aberration to counteract the positive spherical aberration of the average human cornea. The PanOptix is an ultraviolet-filtering, foldable, one-piece lens. The PanOptix demonstrates peaks at plano, -1.50 and -2.50. ![]() Mean binocular visual acuity with correction for distance vision measured four months postoperatively through three different IOLs: the Alcon PanOptix (blue), the J&J Symfony (red) and the Alcon monofocal AcrySof SN60WF (green). This article discusses the new lens design, how to identify good and bad candidates, how it compares with other lenses and post-op tips.įig. However, it also brings some new features not available in other lenses. As with all multifocal IOLs, the PanOptix does involve trade-offs, and your patient must be realistic about what this lens can deliver. Our surgery center has been working extensively with this new lens, and the results have been favorable so far. To Infinity and Beyond LASIK: A Refractive Surgery UpdateĪs the first-and so far only-trifocal intraocular lens (IOL) available in the United States, the PanOptix (Alcon) is different from any other multifocal IOL in our armamentarium.
0 Comments
Leave a Reply. |
Details
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |