May 2020


Journal of Cataract & Refractive Surgery
In the journal: May 2020

Intraocular lens power calculation in eyes with keratoconus: a review

Nuria Garzón, PhD, Pedro Arriola-Villalobos, MD, Gema Felipe, Msc, Francisco Poyales, MD, María García-Montero, PhD

This literature review documented the published methods being used to calculate IOL power for patients with keratoconus, looking specifically at papers that focused on related parameters and formulas. The review found that there are few publications that detail IOL power calculations for this population. Those that did found the SRK/T formula to have the best outcomes. According to the research, hyperopia was more likely to occur if the keratometric value used was based on the standard refractive index. Researchers also found the more severe the keratoconus, the greater the deviation from refractive target postop.

Comparison of visual and refractive outcomes of two trifocal intraocular lenses

Filomena Ribeiro, MD, Tiago Ferreira, MD

Sixty patients were included in this double-arm, randomized, prospective case series, receiving either bilateral implantation of the FineVision Toric Pod FT IOL (PhysIOL) (n=30) or the AcrySof IQ PanOptix Toric IOL (Alcon) (n=30). Patients were evaluated at 3 months postop on several parameters, including visual and refractive outcomes, contrast sensitivity, IOL alignment, and quality of vision. There was no difference in uncorrected or corrected distance or near visual acuities, though the PanOptix resulted in better intermediate vision around 60 cm. There were also similar levels of contrast sensitivity, quality of vision, and spectacle independence in the two groups. Mean IOL axis misalignment was 1.59 ± 2.15° and 1.89 ± 3.31° for PanOptix and Pod FT, respectively. Mean magnitude of error for astigmatic correction was –0.09 D and –0.11 D for PanOptix and Pod FT, respectively.

Sutureless scleral fixation using Carlevale lens: surgical and refractive outcomes

Francesco Barca, MD, Tomaso Caporossi, MD, Lorenzo de Angelis, MD, Fabrizio Giansanti, MD, Alfonso Savastano, MD, Laura Di Leo, MD, Stanislao Rizzo, MD

Researchers evaluated the Carlevale IOL (Soleko) as an option for a sutureless scleral fixation technique in 32 eyes of patients who were aphakic (n=9), had a dislocated IOL (n=22), or a subluxated crystalline lens (n=3). The mean preoperative BCVA was 0.46 ± 0.29; BCVA at 8 months of follow-up was 0.13 ± 0.12 logMAR (p<0.05). IOL tilt was 2.08 ± 1.19°. In terms of complications, one patient experienced transient CME, another had vitreous hemorrhage, and two had pigment dispersion/reverse pupillary block. Lens dislocation, conjunctival erosion, and plug externalization did not occur in the follow-up period. With these results, the researchers concluded that the Carlevale IOL is a valid option for sutureless scleral fixation.

Journal of Cataract & Refractive Surgery In the journal: May 2020 Journal of Cataract & Refractive Surgery In the journal: May 2020
Ophthalmology News - EyeWorld Magazine
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