ABSTRACT
Purpose: To evaluate the clinical outcomes of preloaded toric intraocular lens (IOLs) implantation in eyes undergoing phacoemulsification. Methods: This prospective study included 51 eyes of 51 patients with visually significant cataracts and corneal astigmatism ranging between 0.75 and 5.50 D. All patients underwent phacoemulsification with SupraPhob toric intraocular lens implantation under topical anesthesia. The main outcome measures were uncorrected distance visual acuity (UDVA), residual refractive cylinder, spherical equivalent, and IOL stability at 3 months follow-up. Results: At 3 months, 49% (25/51) of patients had UDVA equal to or better than 20/25 with 100% of eyes achieving better than 20/40. Mean logMAR UDVA improved from 1.02 ± 0.39, preoperatively to 0.11 ± 0.10 at 3 months follow-up (P < 0.001, Wilcoxon signed-rank test). The mean refractive cylinder improved from - 1.56 ± 1.25 D preoperatively to - 0.12 ± 0.31 D at 3 months follow-up (P < 0.001) while the mean spherical equivalent value changed from - 1.93 ± 3.71D preoperatively to - 0.16 ± 0.27D (P = 0.0013). The mean root mean square value for higher order aberrations was 0.30 ± 0.18 µm while the average contrast sensitivity value (Pelli-Robson chart) was 1.56 ± 0.10 log unit, at the final follow-up. The mean IOL rotation at 3 weeks was 1.7 ± 1.61 degrees, which did not change significantly at 3 months (P = 0.988) follow-up. There were no intraoperative or postoperative complications. Conclusion: SupraPhob toric IOL implantation is an effective method for addressing preexisting corneal astigmatism in eyes undergoing phacoemulsification with good rotational stability.
Subject(s)
Astigmatism , Cataract Extraction , Cataract , Lenses, Intraocular , Phacoemulsification , Humans , Phacoemulsification/methods , Lens Implantation, Intraocular/methods , Astigmatism/complications , Prospective Studies , Cataract Extraction/adverse effects , Refraction, Ocular , Lenses, Intraocular/adverse effects , Cataract/complicationsABSTRACT
The scientific effort to control the interaction between light and matter has grown exponentially in the last 2 decades. This growth has been aided by the development of scientific and technological tools enabling the manipulation of light at deeply sub-wavelength scales, unlocking a large variety of novel phenomena spanning traditionally distant research areas. Here, the role of chirality in light-matter interactions is reviewed by providing a broad overview of its properties, materials, and applications. A perspective on future developments is highlighted, including the growing role of machine learning in designing advanced chiroptical materials to enhance and control light-matter interactions across several scales.
ABSTRACT
Purpose: The purpose of this study is to evaluate the post-lockdown challenges during Coronavirus disease 2019 (COVID-19) pandemic amongst the ophthalmologists in India. Methods: An online survey was sent to the practicing ophthalmologists across India. Data were collected from the responding ophthalmologists and analysed using Medcalc 16.4 software. Results: A total of 794 responses were obtained. Most respondents (51%) were in the age group 30-50 years and were in independent practice (40.05%). Almost three-fourth of ophthalmologists resumed their surgical services after a gap of more than a month post-lockdown. Almost a third of the respondents had significant reduction in their surgical workload during this period. Significant fear of contracting COVID-19 infection in the operation theatres was reported while moderate difficulty was found in procuring protective gear during immediate post-national lockdown period. Conclusion: The pandemic has changed the ophthalmic practice significantly, with patient and staff safety becoming areas of major concern. Both financial and psychological concerns affecting healthcare workers need addressing for continued patient care.
