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Controlling of Applied Force and Cornea Displacement Estimation in Robotic Corneal Surgery With a Gripper Surgical Instrument.
Int J Med Robot
February 2025
Faculty of Health, Education, Medicine and Social Care, Medical Technology Research Centre, The Institute of Excellence in Robotic Surgery, Anglia Ruskin University, Chelmsford, UK.
Background: The human eye consists of highly sensitive, hydrated, and relatively thin tissues, making precise control and accurate force estimation crucial in robotic eye surgery. This paper introduces a novel control method and state observer designed for a gripper surgical instrument used on the external ocular surface during robotic eye surgery.
Methods: A novel state observer, operating in tandem with the controller, estimates the applied force.
Predicting corneal decompensation in Fuchs endothelial corneal dystrophy with Scheimpflug tomography and clinical parameters.
Indian J Ophthalmol
January 2025
Department of Ophthalmology, Université Paris Cité, Cochin Hospital, Assistance Publique-Hôpitaux de Paris, Paris, France.
Purpose: This study aims to evaluate the efficacy of various tomographic indices, both established and novel, in predicting endothelial decompensation leading to either spontaneous corneal transplantation or transplantation following cataract surgery in patients with Fuchs endothelial corneal dystrophy (FECD).
Methods: In this cross-sectional, retrospective study, we reviewed the files of 93 eyes from 54 FECD patients undergoing regular follow-up. We recorded clinical metrics such as morning visual disturbance (MVD) and corrected distance visual acuity.
Treatment of superficial corneal opacities with corneal stromal lenticule obtained through SMILE surgery.
Int J Ophthalmol
December 2024
Hainan Eye Hospital and Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-sen University, Haikou 570311, Hainan Province, China.
Aim: To evaluate the clinical efficacy and feasibility of superficial corneal opacities treated by excimer laser phototherapeutic keratectomy (PTK) combined with small incision lenticule extraction (SMILE)-derived corneal stromal lenticule transplantation.
Methods: A retrospective interventional case series of nine patients aged 12-59y with superficial corneal opacity caused by different pathologies who underwent standardized PTK combined with SMILE-derived corneal stromal lenticule transplantation was examined. Lenticule patches were fixed with fibrin glue.
Assessing Corneal Tomographic Changes in Fuchs Endothelial Corneal Dystrophy Over 1 year: Scheimpflug Versus Anterior Segment Optical Coherence Tomography.
Cornea
December 2024
Ophthalmology Biology, Engineering and Imaging Laboratory, Federative Institute of Research in Sciences and Health Engineering, Faculty of Medicine, Jean Monnet University, Saint-Etienne, France.
Purpose: The objective of this study was to compare the capacity of anterior segment optical coherence tomography (AS-OCT) and Scheimpflug camera in detecting tomographic changes over 1 year in a cohort of patients with Fuchs endothelial corneal dystrophy.
Methods: We conducted a single-center prospective study which consisted of 2 identical visits spaced 1 year apart. At each visit, tomographic analyses were performed using Scheimpflug imaging (Pentacam HR, Oculus) and swept source AS-OCT (Casia SS-1000 Tomey).
A Case of Acute Angle Closure Secondary to Pupillary Block Caused by a Dislocated Intraocular Lens-Capsular Tension Ring Complex.
Cureus
November 2024
Department of Ophthalmology, Shimane University Faculty of Medicine, Izumo, JPN.
We report a case of acute angle closure secondary to pupillary block caused by a dislocated intraocular lens (IOL)-capsular tension ring (CTR) complex. A 68-year-old woman, who had undergone cataract surgery 28 months earlier, presented with acute right eye pain and blurred vision. Examination revealed elevated intraocular pressure (IOP) of 80 mmHg, corneal edema, and anterior chamber shallowing, with anterior displacement of the IOL-CTR complex observed on anterior-segment optical coherence tomography.
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