Search Our Scientific Publications & Authors

Br J Ophthalmol 2021 Apr 12. Epub 2021 Apr 12.

Singapore Eye Research Institute/Singapore National Eye Centre, Singapore

Aims: To validate a deep learning (DL) algorithm (DLA) for 360° angle assessment on swept-source optical coherence tomography (SS-OCT) (CASIA SS-1000, Tomey Corporation, Nagoya, Japan).

Methods: This was a reliability analysis from a cross-sectional study. An independent test set of 39 936 SS-OCT scans from 312 phakic subjects (128 SS-OCT meridional scans per eye) was analysed. Read More

Indian J Ophthalmol 2021 Apr;69(4):979-981

Department of Ophthalmology, Faculty of Medicine, Cairo University, Cairo, Egypt.

We describe the new technique of chandelier-assisted pneumatic retinopexy in repairing rhegmatogenous retinal detachments in a series of young adults. In the operating room, a 25-gauge trocar cannula is inserted at the pars plana 180° across the preoperatively detected retinal break followed by Chandelier light insertion, which is used in globe fixation and rotation. The retinal periphery is reexamined using scleral indentation and chandelier light endoillumination. Read More

Am J Ophthalmol Case Rep 2021 Jun 18;22:101035. Epub 2021 Feb 18.

Department of Neurology, Mayo Clinic, Rochester, MN, USA.

Purpose: This report describes pseudopapilledema in two siblings with Cockayne syndrome and examines a structural mechanism for its development.

Observations: Two siblings with genetically documented Cockayne syndrome, enophthalmos, and hyperopia were found to have pseudopapilledema. Magnetic resonance (MR) imaging disclosed retrodisplacement of the globes, axial foreshortening, posterior scleral flattening, and protrusion of the optic papilla into the vitreous. Read More

Ophthalmic Surg Lasers Imaging Retina 2021 Feb;52(2):58-60

J AAPOS 2021 Feb 16. Epub 2021 Feb 16.

Department of Pathology, Hacettepe University School of Medicine, Ankara, Turkey.

Purpose: To determine the prevalence of anomalous extraocular bands in patients who underwent surgery for Duane syndrome and to compare the clinical findings in patients with and without bands.

Methods: Thirty-one patients with Duane syndrome who had their first surgery on rectus muscles to correct the primary deviation and abnormal head posture were included in this retrospective study. Patients were divided into two groups depending on the identification of anomalous extraocular bands intraoperatively. Read More

Cont Lens Anterior Eye 2021 Feb 11:101403. Epub 2021 Feb 11.

Ophthalmology Department, Centro Hospitalar de Entre o Douro e Vouga, Santa Maria da Feira, Portugal.

Purpose: To investigate conjunctival vascular density (VD) using Anterior Segment Optical Coherence Tomography Angiography (OCTA) in Scleral Contact Lens (ScCL) wearers.

Methods: In this cross-sectional study, the conjunctival blood VD was assessed using OCTA with an anterior segment lens adapter. The nasal surface of each eye (6 ×6 mm) was scanned to a depth of 800 μm with ScCL and fifteen minutes after removing the lens. Read More

Indian J Ophthalmol 2020 Dec;68(12):2930-2934

Department of Retina and Vitreous, Narayana Nethralaya, Bengaluru, Karnataka, India.

Purpose: The aim of this study was to compute the sensitivity, specificity and inter-reader variability of ultra-widefield retinal imaging (Optomap 200Tx) for screening retinal lesions before myopic refractive surgery.

Methods: Two hundred and eight eyes of 109 consecutive refractive surgery candidates were included in this study. All subjects underwent Optomap 200Tx, mydriatic slit-lamp lens examination and dilated retinal examination with scleral indentation by a retinal specialist. Read More

Int J Ophthalmol 2020 18;13(11):1745-1752. Epub 2020 Nov 18.

Department of Ophthalmology, Faculty of Medicine, Bezmialem Vakif University, Istanbul 34093, Turkey.

Aim: To compare changes in anterior segment topography and axial length (AL) evaluated with Pentacam and IOL Master after pars plana vitrectomy (PPV) performed with and without vitreous base shaving.

Methods: This prospective study included patients who underwent PPV or phacoemulsification+PPV (Phaco+PPV) for various indications. Patients who underwent total posterior hyaloid detachment and excessive vitreous base shaving with scleral indentation were referred to as complete PPV (c-PPV). Read More

Ophthalmic Res 2020 Oct 2. Epub 2020 Oct 2.

Introduction: The purpose of this study was to compare intraoperative intraocular pressure fluctuation using different aspiration systems and 25- and 27-gauge vitreous surgery probes.

Methods: Ex vivo, pars plana, 25- and 27-gauge vitreous surgery was performed on four porcine eyes, and IOP fluctuations were evaluated. We performed three-port vitrectomy using the Constellation® Vision or the EVA® Phaco-Vitrectomy system. Read More

Graefes Arch Clin Exp Ophthalmol 2020 Sep 24. Epub 2020 Sep 24.

Department of Vitreo-retinal Services, Aravind Eye Hospital and Post Graduate Institute of Ophthalmology, Madurai, Tamil Nadu, India.

Aim: To compare the sensitivity of Optomap Panoramic 200 and Clarus 500 in detecting peripheral retinal breaks that required treatment.

Methods: This prospective study enrolled consecutive patients undergoing laser for treatment-requiring peripheral retinal breaks from May 2019 to July 2019. The patients first underwent indirect ophthalmoscopy examination with scleral indentation by a retinal consultant and then ultra-widefield imaging by a single trained technician on Optomap 200 and Clarus 500 in all nine ocular gazes. Read More

Clin Ophthalmol 2020 27;14:2533-2541. Epub 2020 Aug 27.

Eye Clinic, Department of Surgical Sciences, University of Turin, AOU Città della Salute e della Scienza, Turin, Italy.

Purpose: This study aims to evaluate the effectiveness of different decompressive injection techniques in reducing intraocular pressure (IOP) spikes, if compared to the injection without pressure applied on the eye, following the intravitreal injection of bevacizumab.

Patients And Methods: Two hundred patients with indication to intravitreal therapy were randomized into five arms: 40 received intravitreal injection without ocular decompression (arm A), 40 with pre-injection scleral indentation with cotton swab (arm B), 40 with pre-injection digital ocular massage (arm C), 40 with post-injection scleral indentation with cotton swab (arm D) and 40 with post-injection digital ocular massage (arm E). All patients underwent measurement of the IOP with Goldamm applanation tonometer 10 minutes before and 10 minutes after the injection. Read More

Retina 2020 Jun 10. Epub 2020 Jun 10.

Cornea and Refractive Services.

Purpose: To describe the use of glycerine in improving media clarity in cases with edematous cornea.

Methods: Retrospective case-series including patients with posterior segment pathologies needing surgical invention and having corneal edema. Each case was studied for the role of topical application of glycerine instead of viscoelastic agents and the course of surgery. Read More

J Ophthalmol 2020 21;2020:8720450. Epub 2020 Apr 21.

State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-Sen University, Guangzhou, China.

Purpose: To evaluate the effect of phacoemulsification and intraocular lens (IOLs) implantation in eyes with medically uncontrolled primary angle-closure glaucoma (PACG) previously treated with trabeculectomy and to quantify the anatomical changes in the anterior chamber angle by ultrasound biomicroscopy (UBM).

Methods: Forty-four eyes of 37 consecutive patients with medically uncontrolled PACG coexisting cataracts with a surgical history of trabeculectomy were included in this study. Each patient underwent phacoemulsification and IOL implantation. Read More

BMC Ophthalmol 2020 Mar 23;20(1):117. Epub 2020 Mar 23.

Department of Ophthalmology, China Medical University Hospital, China Medical University, 2 Yuh-Der Road, Taichung City, 40447, Taiwan.

Background: A cyclodialysis cleft often leads to direct communication between the anterior chamber and the suprachoroidal space. It is a rare condition that is encountered with blunt trauma, and less commonly, after surgery. Hypotony is the major sequelae that may lead to hypotonous maculopathy, optic disc edema, corneal folds, and astigmatism. Read More

Retin Cases Brief Rep 2020 Feb 6. Epub 2020 Feb 6.

The Royal Eye Unit, Kingston Hospital, NHS Foundation Trust, Kingston Upon Thames, London, United Kingdom.

Purpose: We report a case of a vortex vein varix diagnosed with optical coherence tomography under globe compression.

Methods: To illustrate the dynamical behavior of a vortex vein varix, optical coherence tomography was performed with and without gentle globe indentation with a cotton swab.

Results: A 51-year-old woman was referred by her optician for an incidental finding of a nonpigmented choroidal mass in the right eye. Read More

BMC Ophthalmol 2020 Jan 30;20(1):39. Epub 2020 Jan 30.

New York Eye and Ear Infirmary of Mount Sinai, 310 E 14th St, New York, NY, 10003, USA.

Background: The case describes a rare entity. Most cases of IOL dislocation are associated with surgical trauma or preexisting zonulopathy. This patient presents IOL dislocation following routine exam, suggesting the need of careful evaluation of zonular integrity on pseudopahkic patients. Read More

Turk J Ophthalmol 2019 12;49(6):342-346

Dokuz Eylül University Faculty of Medicine, Department of Ophthalmology, İzmir, Turkey

Objectives: To describe results of demarcation laser photocoagulation in preventing progression of subclinical retinal detachment (SCRD).

Materials And Methods: Twenty-one eyes of 20 patients with SCRD were included. All patients underwent a complete ophthalmological examination, spectral-domain optical coherence tomography, and color fundus photography. Read More

J Ophthalmol 2019 9;2019:3839168. Epub 2019 Jun 9.

Division of Retina and Vitreous, Ophthalmic Consultants of Long Island, 2000 North Village Avenue, Suite 402, Rockville Center, NY 11570, USA.

The objective of this study is to describe the clinical utility and morphologic characteristics of peripheral vitreoretinal interface abnormalities with spectral domain optical coherence tomography (SD-OCT). A prospective imaging analysis of 43 patients with peripheral vitreoretinal interface abnormalities seen on binocular indirect examination with scleral indentation was done. SD-OCT was evaluated for image quality and structural findings. Read More

Cornea 2019 Sep;38(9):1198-1201

Anterior Segment and Refractive Surgery Department, Rothschild Foundation, Paris, France.

Purpose: To describe an original technique to unfold the graft in vitrectomized eyes undergoing Descemet membrane endothelial keratoplasty (DMEK).

Methods: We performed a retrospective chart and video review of successive cases presenting with corneal decompensation in vitrectomized eyes or aphakic eyes in which DMEK or combined DMEK/scleral-fixated intraocular lens implantation was indicated and in which a specific technique [Cornea-Press (C-Press)] was used to unfold the graft. C-Press is characterized by corneal indentation intended to artificially shallow the anterior chamber and allow the graft to unroll. Read More

Pan Afr Med J 2019 24;32:44. Epub 2019 Jan 24.

Service d'Ophtalmologie, CHU Mohamed VI, Marrakech, Maroc.

Several factors predispose to the occurrence of rhegmatogenous retinal detachment, including cataract surgery, myopia, and degenerative lesions of the peripheral retina as well as eye trauma. This study aims to compare the anatomical and functional outcome of the two surgical techniques (AB interno vs AB externo) in our Hospital. We conducted a descriptive, retrospective study in the Department of Ophthalmology at the University Hospital Mohamed VI in Marrakech, over a period of 3 years, ranging from January 2013 to December 2015. Read More

Jpn J Ophthalmol 2019 Jul 18;63(4):317-321. Epub 2019 May 18.

Department of Surgery-Related, Division of Ophthalmology, Kobe University Graduate School of Medicine, 7-5-2 Kusunoki-cho, Chuo-ku, Kobe, 650-0017, Japan.

Purpose: To investigate the perioperative clinical factors, which contribute to the postsurgical aqueous flare intensity (AFI) following 27-gauge pars plana vitrectomy (27GPPV) for primary rhegmatogenous retinal detachment (RRD).

Study Design: Retrospective clinical study.

Methods: We performed retrospective analyses of the medical records of 47 eyes of 47 patients with primary RRD who had undergone 27GPPV with a wide-angle viewing system. Read More

Ophthalmol Retina 2019 01 22;3(1):73-76. Epub 2018 Aug 22.

Department of Ophthalmology, Rudolf Foundation Hospital, Vienna, Austria; Karl Landsteiner Institute for Retinal Research and Imaging, Vienna, Austria; Eye Center Donaustadt, Sigmund Freud University, Vienna, Austria.

Purpose: To report the efficacy of the use of a new scleral depressor marker during scleral buckling surgery for retinal detachment.

Design: Noncomparative, consecutive case series study.

Participants: Eleven patients (11 eyes) with rhegmatogenous retinal detachment who underwent scleral buckling surgery performed by 2 experienced vitreoretinal surgeons. Read More

Can J Ophthalmol 2019 02 3;54(1):60-64. Epub 2018 May 3.

Department of Ophthalmology and Visual Sciences, University of Alberta, Edmonton, Alta.

Objective: To determine the effectiveness of a macular buckle procedure without vitrectomy for the treatment of symptomatic myopic macular schisis.

Design: Retrospective case series.

Participants And Methods: All patients who underwent surgery with placement of an NPB macular buckle (AJL Ophthalmic, Miñano, Álava, Spain) without vitrectomy for symptomatic myopic macular schisis were included. Read More

Klin Monbl Augenheilkd 2019 Apr 18;236(4):603-618. Epub 2019 Feb 18.

Buckling techniques are used for rhegmatogenous (break-induced) retinal detachment. The aim is to achieve a functional closure of the retinal breakwith permanent retinal attachment by scleral indentation and coagulation of retinal holes. The surgery is primarily extraocular. Read More

BMC Surg 2018 Nov 14;18(1):98. Epub 2018 Nov 14.

Department of Cellular Biology and Tissue Engineering, Faculty of Medicine and Psychology, Autonomous University of Baja California, Av. Universidad no 14418, Parque Industrial Internacional Tijuana, CP. 22390, Tijuana, BC, Mexico.

Background: The dermoid cyst considered a cystic teratoma derived from embryonic germinal epithelium is a slow-growing benign tumour. Dermoid cysts may occur in the orbital and periorbital region in paediatric patients and are often recurrent. The surgical approach depends upon the site of the lesion, superficial or deep. Read More

PLoS One 2018 12;13(11):e0207189. Epub 2018 Nov 12.

School of Optometry, The Hong Kong Polytechnic University, Hong Kong SAR, China.

The cornea is a soft, transparent, composite organic tissue, which forms the anterior outer coat of the eyeball. Although high myopia is increasing in prevalence worldwide and is known to alter the structure and biomechanical properties of the sclera, remarkably little is known about its impact on the biomechanics of the cornea. We developed and validated a novel optical-coherence-tomography-indentation probe-to measure corneal biomechanical properties in situ, in chicks having experimentally-induced high myopia, while maintaining intraocular pressure at levels covering the physiological range. Read More

J Mech Behav Biomed Mater 2019 02 16;90:146-154. Epub 2018 Oct 16.

Department of Mechanical Engineering, Kyushu University, 744 Motooka, Nishi-ku, Fukuoka 819-0395, Japan.

The purpose of this study was to perform a set of experimental indentation test to certify our proposed eye model enables to have a better deformation assessment for the eye globe under the indentation load compared to other eye models. To do that, twenty-four enucleated human globes were removed from the cadavers. A screw at 5 different loading rates indented to the eye globes and the resulting macroscopic force-displacement as a result of the deformation in the apex of the cornea was measured. Read More

Ophthalmic Surg Lasers Imaging Retina 2018 06;49(6):436-439

Background And Objective: To describe a novel technique of scleral indentation and transillumination for single-surgeon, unassisted vitrectomy and vitreous base shaving enhanced with a digital heads-up display system (NGENUITY 3D Visualization System; Alcon, Fort Worth, TX).

Patients And Methods: This technique was utilized in six eyes of six patients during vitrectomy surgery for common vitreoretinal surgical diagnoses. In each case, the transillumination was performed with the traditional intraocular light pipe set at 100% power, placed obliquely just posterior to the vitreous base insertion, with or without a transillumination adapter. Read More

Ophthalmic Surg Lasers Imaging Retina 2018 05;49(5):374-379

Background And Objective: To report the efficacy, safety, and benefits of femtosecond laser-assisted cataract surgery (FLACS) combined with sutureless 23-gauge pars plana vitrectomy (PPV).

Patients And Methods: This multicenter, retrospective study evaluated patient records and videos of 43 cases with retinal pathologies and cataract who underwent the combined procedure.

Results: In 44. Read More

Indian J Ophthalmol 2018 05;66(5):687-690

Dr. Rajendra Prasad Centre for Ophthalmic Sciences, AIIMS, New Delhi, India.

Purpose: The objective of this study is to describe the removal of retained intraocular foreign body (RIOFB) by bimanual pars plana vitrectomy through midline sclerotomy in phakic patients.

Technique: Four eyes with RIOFB and clear lens underwent microincision vitrectomy surgery. A chandelier illumination was placed through one of the existing ports. Read More