837 results match your criteria Contact Lens Removal


A rigid gas permeable contact lens discovered embedded in the upper eyelid 7 years after trauma: A case report.

Int J Surg Case Rep 2022 Jun 16;96:107316. Epub 2022 Jun 16.

Department of Ophthalmology, Saitama Medical University, Saitama, Japan. Electronic address:

Introduction: Rigid gas permeable (RGP) contact lenses implanted in the upper eyelid may remain asymptomatic. It is important to evert the upper eyelid even in the absence of definite pain.

Presentation Of Case: A 74-year-old woman with a history of rheumatoid arthritis visited a local clinic because of right eye discomfort that had persisted for 5 months. Read More

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The Effect of ChromaGen Contact Lenses on Corneal Clarity: A Corneal Densitometry.

Beyoglu Eye J 2022 27;7(2):89-94. Epub 2022 May 27.

Department of Ophthalmology, Kudret Eye Hospital, Ankara, Turkey.

Objectives: The purpose of this study is to investigate the effect of ChromaGen contact lens (CCL) on corneal clarity, expressed through the measurement of corneal densitometry (CD) values.

Methods: This study included 22 eyes of 22 patients with congenital red-green color vision deficiency who were admitted to our clinic for the CCL trial. After a detailed ophthalmological examination and CD measurement with Pentacam HR (Oculus Optikgerate GmbH, Wetzlar, Germany), the most appropriate CCLs were defined through pseudoisochromatic plates and inserted for 2 h. Read More

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Topical cenegermin associated ocular surface and contact lens drug precipitate deposit formation.

Am J Ophthalmol Case Rep 2022 Sep 14;27:101584. Epub 2022 May 14.

Loma Linda University Eye Institute, 11370 Anderson St, Ste 1800, Loma Linda, CA, 92354, USA.

Purpose: To report for the first time drug precipitate deposit formation on both the ocular surface and bandage contact lens (BCL) of a patient treated with topical cenegermin.

Observations: A patient suffering from stage III neurotrophic keratitis developed extensive ocular surface and BCL deposits over the eight week course of her topical cenegermin therapy. The ocular surface deposits were weakly adherent, detaching and clearing from the cornea within minutes of BCL removal. Read More

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September 2022

The impact of a rub and rinse regimen on removal of human coronaviruses from contemporary contact lens materials.

Cont Lens Anterior Eye 2022 May 23:101719. Epub 2022 May 23.

Department of Chemical Engineering, University of Waterloo, Waterloo, Ontario, Canada. Electronic address:

Purpose: To assess the influence of contemporary contact lens (CL) materials on human coronavirus attachment and the influence of a rub and rinse step to remove these viruses.

Methods: The binding rates of HCoV-229E and HCoV-OC43 to eight soft CL materials and four rigid gas permeable materials were analyzed. The impact of a rub and rinse step to remove these viruses from all materials was examined. Read More

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Scleral Lens Thickness and Corneal Edema Under Closed Eye Conditions.

Eye Contact Lens 2022 May 22;48(5):194-199. Epub 2021 Oct 22.

Contact Lens and Visual Optics Laboratory, School of Optometry and Vision Science, Centre for Vision and Eye Research, Queensland University of Technology, Brisbane, Australia.

Objectives: To examine the relationship between central lens thickness and central corneal edema during short-term closed eye scleral lens wear.

Methods: Nine participants (mean age 30 years) with normal corneas wore scleral lenses (Dk 141) under closed eye conditions on separate days with nominal center thicknesses of 150, 300, 600, and 1,200 μm. Epithelial, stromal, and total corneal edema were measured using high-resolution optical coherence tomography immediately after lens application and after 90 min of wear, before lens removal. Read More

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Corneal oedema during open-eye fenestrated scleral lens wear.

Ophthalmic Physiol Opt 2022 May 17. Epub 2022 May 17.

Contact Lens and Visual Optics Laboratory, School of Optometry and Vision Science, Centre for Vision and Eye Research, Queensland University of Technology, Brisbane, Queensland, Australia.

Introduction: Studies examining the effect of fenestrating soft and corneal rigid contact lenses upon corneal oedema have yielded conflicting results. Although often utilised in clinical practice, no studies have quantified the effect of fenestrating a scleral contact lens upon corneal oedema. Therefore, the aim of this experiment was to examine the effect of incorporating a single peripheral fenestration on central corneal oedema during short-term open-eye scleral lens wear, while controlling for potential confounding variables. Read More

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Case Report: Novel Patient Training Technique for the Application and Removal of Scleral Lenses.

Optom Vis Sci 2022 Apr 13. Epub 2022 Apr 13.

BostonSight, Needham, Massachusetts.

Significance: This report shares a technique that can be utilized to assist training patients to properly and safely apply and remove prosthetic replacement of the ocular surface ecosystem devices (PD) or scleral lenses in order to reduce patient training nervousness, limit adverse events from training and limit training failures.

Purpose: To introduce a novel scleral lens application and removal training method.

Case Report: A 28-year-old female with limbal stem cell deficiency secondary to contact lens overwear in the left eye greater than the right eye presented for prosthetic replacement of the ocular surface ecosystem treatment. Read More

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Uveitis-Glaucoma-Hyphema Syndrome Following iStent Implantation.

Case Rep Ophthalmol 2022 Jan-Apr;13(1):82-88. Epub 2022 Feb 14.

Ross Eye Institute, University at Buffalo, Buffalo, New York, USA.

Minimally invasive glaucoma surgery (MIGS) is a subset of glaucoma surgery that is known for its low rate of complications both intraoperatively and postoperatively compared to traditional filtering surgery. We present a case of a patient who, after receiving uncomplicated cataract extraction with posterior chamber intraocular lens implantation and concurrent iStent trabecular bypass stent implantation, experienced recurrent episodes of spontaneous microhyphema and inflammation in the late postoperative period. The patient, who had a history of mild asymmetric exfoliative glaucoma but no identifiable sources of trauma, underwent extensive examination to investigate causes of his episodic anterior segment bleeding and mild inflammation with concurrent elevated intraocular pressure. Read More

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February 2022

Experiences of Treatment With Contact Lenses in Aphakic Children With Unilateral Congenital Cataract: A Retrospective Study.

Eye Contact Lens 2022 May 24;48(5):222-227. Epub 2022 Mar 24.

Department of ophthalmology (A.M.K., A.M.K., L.N.), Eye Research Center, Farabi Eye Hospital Tehran University of Medical Sciences, Tehran, Iran; Department of Epidemiology and Biostatistics (M.Y.), School of Public Health, Tehran University of Medical Sciences, Tehran, Iran; Department of ophthalmology (F.A.), Eye Research Center, Farabi Eye, Tehran, Iran.

Background And Objectives: Congenital cataract is a condition compromising the eye's crystalline lens in infants and is usually diagnosed at birth. It can lead to irreversible vision loss if not promptly detected and treated, especially in unilateral cases. Nowadays, children with congenital cataracts can undergo surgical removal of their opacified crystalline lenses, and visual rehabilitation is mandatory to prevent deep amblyopia. Read More

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Scleral Lens Thickness and Corneal Edema Under Open Eye Conditions.

Eye Contact Lens 2022 May 24;48(5):200-205. Epub 2022 Mar 24.

Contact Lens and Visual Optics Laboratory, School of Optometry and Vision Science, Centre for Vision and Eye Research, Queensland University of Technology, Brisbane, QLD, Australia.

Purpose: To examine the relationship between lens thickness and central corneal edema during short-term open-eye scleral lens wear, and to compare these empirical edema measurements with theoretical modelling.

Methods: Nine participants (mean age 30 years) with normal corneas wore scleral lenses {Dk 141×10-11 cm3 O2 [cm]/([sec] [cm2] [mm Hg])} under open-eye conditions on separate days with nominal center thicknesses of 150, 300, 600, and 1,200 μm. Epithelial, stromal, and total corneal edema were measured using high-resolution optical coherence tomography immediately after lens application and after 90 min of wear, before lens removal. Read More

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Combined treatment modality including topical 20% fluorescein dye in the management of phthiriasis palpebrarum - A case series.

Indian J Ophthalmol 2022 Apr;70(4):1327-1330

Department of Vitreo-Retina, Aravind Eye Hospital, Madurai, Tamil Nadu, India.

Purpose: To study the clinical presentations and outcomes of phthiriasis palpebrarum (PP) managed with combined treatment modality comprising of 20% fluorescein dye, mechanical removal of the ectoparasites, and topical application of antibiotic eye ointment with paraffin base.

Methods: This is a prospective interventional noncomparative hospital-based series of 13 patients of PP. All the patients underwent local application of 20% fluorescein dye over the eyelashes and eyebrows of both the eyes followed by the mechanical removal of all the ectoparasites and trimming of the eyelashes from the base followed by application of ophthalmic ointment. Read More

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Exploring the factors which impact overall satisfaction with single vision contact lenses.

Cont Lens Anterior Eye 2022 Mar 1:101579. Epub 2022 Mar 1.

Centre for Ocular Research & Education (CORE), School of Optometry & Vision Science, University of Waterloo, 200 University Avenue West, Waterloo, Ontario N2L 3G1, Canada; Centre for Eye and Vision Research (CEVR), 17W Hong Kong Science Park, Hong Kong.

Purpose: To explore the impact of subjective factors (lens handling, comfort and vision) on overall single vision contact lens satisfaction.

Methods: Correlation analysis of a prospective, randomised, double-masked, bilateral crossover study involving 55 adapted lens wearers fitted with somofilcon A (SiHy) (clariti® 1 day, CooperVision) and etafilcon A (Hy) (1 DAY ACUVUE® MOIST, Johnson & Johnson Vision) was conducted. Subjective ratings of lens handling, comfort and vision collected after 1 week of lens wear for each lens type were correlated with overall satisfaction. Read More

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The utility of contact lens-assisted corneal cross-linking (CACXL) in progressive keratoconus patients with thin corneas.

Eur J Ophthalmol 2022 Jan 10:11206721211070915. Epub 2022 Jan 10.

Kaskaloglu Eye Hospital, Izmir, Turkey.

Purpose: To evaluate efficacy and safety of contact lens-assisted corneal cross-linking (CACXL) among progressive keratoconus patients with thin corneas.

Setting: Private eye hospital.

Design: Cross-sectional study. Read More

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January 2022

Anatomical and physiological considerations in scleral lens wear: Intraocular pressure.

Cont Lens Anterior Eye 2021 Nov 22:101535. Epub 2021 Nov 22.

University of Houston College of Optometry, The Ocular Surface Institute, Houston, TX, USA. Electronic address:

Intraocular pressure (IOP) is maintained through complex and interrelated systems which control aqueous production and drainage, and it has been suggested that scleral lens (SL) wear may disrupt these vital homeostatic processes. This review provides an overview of anatomical and physiological processes that control IOP, identifies potential effects of SLs on these regulatory mechanisms, and examines studies that have attempted to quantify the effect of SLs on IOP. Lack of access to the cornea during SL wear makes accurate assessment of IOP challenging; therefore, a range of different assessment techniques and instruments have been employed to quantify IOP during and following SL wear. Read More

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November 2021

Investigations on Practical Issues in Solid Immersion Lens Based Sub-Wavelength Terahertz Imaging Technique: System Stability Verification and Interference Pattern Removal.

Sensors (Basel) 2021 Oct 21;21(21). Epub 2021 Oct 21.

Terahertz Research Section, Electronics and Telecommunications Research Institute, Daejeon 34129, Korea.

Terahertz (THz) imaging techniques are attractive for a wide range of applications, such as non-destructive testing, biological sensing, and security imaging. We investigate practical issues in THz imaging systems based on a solid immersion lens (SIL). The system stability in terms of longitudinal misalignment of the SIL is experimentally verified by showing that the diffraction-limited sub-wavelength beam size (0. Read More

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October 2021

Update on Pain Management After Advanced Surface Ablation.

J Refract Surg 2021 Nov 1;37(11):782-790. Epub 2021 Nov 1.

Purpose: To provide an update for postoperative pain control strategies to help ophthalmic surgeons establish a more effective management plan for patients who underwent advanced surface ablation surgeries.

Methods: Google Scholar, Scopus, ScienceDirect, and PubMed were the main resources used to search the medical literature.

Results: The postoperative cornea's healing process is accompanied by intense pain as the chief complaint in the first days after the operation. Read More

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November 2021

Clinical Comparison of a Silicone Hydrogel and a Conventional Hydrogel Daily Disposable Contact Lens.

Clin Ophthalmol 2021 29;15:4339-4345. Epub 2021 Oct 29.

Alcon Research, LLC, Johns Creek, GA, USA.

Purpose: To compare the subjective performances of verofilcon A daily disposable silicone hydrogel contact lenses (CLs) and etafilcon A hydrogel CLs.

Methods: Successful wearers of spherical soft CLs for distance correction were prospectively randomized to wear verofilcon A or etafilcon A lenses for 1 week and crossed over to the alternative lenses. The primary study objective was a comparison of distance visual acuity (VA). Read More

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October 2021

Kinetics, Thermodynamics, and Mechanism of Cu(II) Ion Sorption by Biogenic Iron Precipitate: Using the Lens of Wastewater Treatment to Diagnose a Typical Biohydrometallurgical Problem.

ACS Omega 2021 Oct 17;6(42):27984-27993. Epub 2021 Oct 17.

Department of Chemical Engineering, Cape Peninsula University of Technology, Bellville, Cape Town 7535, South Africa.

The feasibility of improving typical biohydrometallurgical operation to minimize copper losses was investigated by the use of biogenic iron precipitate for the uptake of Cu(II) ions from aqueous solutions. The iron precipitate was obtained from mineral sulfide bioleaching and characterized using SEM/EDS, XRD, FTIR, BET, TGA, and pH analyses. The results show that the precipitate is highly heterogeneous and that Cu(II) ion adsorption can be described by both Freundlich and Langmuir adsorption isotherms, with a maximum adsorption capacity of 7. Read More

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October 2021

Natural course of lid wiper epitheliopathy (LWE) in symptomatic contact lens wearers.

Cont Lens Anterior Eye 2022 02 26;45(1):101529. Epub 2021 Oct 26.

Anglia Ruskin University, Vision and Hearing Sciences Research Centre, Cambridge, United Kingdom.

Purpose: To establish the time course of lid wiper epitheliopathy (LWE) in established CL wearers after a single day (6-10 h) of daily disposable contact lens (CL) wear, the following day post-CL removal and 1-week after CL discontinuation.

Methods: Twenty-one symptomatic (CLDEQ-8 score ≥ 12) habitual wearers of MyDay® silicone hydrogel daily disposable were included. LWE staining was assessed prior to CL wear (Visit 1, V1) using semi-automated analysis after instillation of two drops of 1 % lissamine green (10 μL) that were applied to the superior bulbar conjunctiva. Read More

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February 2022

Quadrant-Specific Changes in Corneal and Tear Fluid Reservoir Thickness for After 2 Hours of Wear.

Eye Contact Lens 2021 Nov;47(11):582-587

Department of Ophthalmology (C.B.N., M.M.S.), Mayo Clinic, Rochester, MN; Atwater Eye Care Center (S.D.), School of Optometry, Indiana University, Bloomington, IN; and Department of Quantitative Health Sciences (D.O.H.), Mayo Clinic, Jacksonville, FL.

Objective: To measure corneal swelling and thickness of the tear fluid reservoir (TFR) after wearing scleral lenses (SLs).

Methods: Thirty-five participants had 1 eye fitted with each of three SLs (15.0-mm Jupiter, 18. Read More

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November 2021

Pars plana subcapsulotomy to remove condense subcapsular opacification in combined surgery of silicone oil removal and phacoemulsification.

Int Ophthalmol 2022 Mar 13;42(3):903-911. Epub 2021 Oct 13.

State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center of Sun Yat-Sen University, 54S Xianlie Road, Guangzhou, 510060, China.

Purpose: Because of the direct contact of intravitreal silicone oil (SO) with the subcapsular membrane, cataract is one of the main SO-related complications. In a group of patients, condense subcapsular opacification occurs, which adds difficulty and risk when having sequential treatment of it. The aim of the current study is to assess the long-term outcomes of pars plana subcapsulotomy to remove condense subcapsular opacification in combined surgery of SO removal and phacoemulsification. Read More

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Exploring microwave irradiation as a method to disinfect contact lens cases.

Cont Lens Anterior Eye 2021 Oct 9:101522. Epub 2021 Oct 9.

Department of Mechanical Engineering, College of Engineering, University of Kentucky, 506 Administration Drive, Lexington, KY, 40506, United States. Electronic address:

Purpose: Biofilm formation caused by infrequent contact lens case replacement and the ineffectiveness of multi-purpose solutions (MPS) on biofilm removal is associated with high rates of bacterial keratitis infections. This study demonstrated biofilm elimination from the contact lens case by microwave irradiation.

Methods: Staphylococcus aureus biofilms indicative of 3-9 months of contact wear were cultured in contact lens cases and visualized with crystal violet (CV) staining. Read More

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October 2021

Comparison of the effect of removing bandage contact lens on the days 3 and 5 following photorefractive keratectomy.

Int Ophthalmol 2022 Feb 12;42(2):575-580. Epub 2021 Oct 12.

Chemical Injuries Research Center, Systems Biology and Poisonings Institutes, Baqiyatallah University of Medical Sciences, Tehran, Iran.

Aim: To compare the outcomes of removing bandage contact lens (BCL) on days 3 and 5 after photorefractive keratectomy (PRK).

Methods: One hundred patients who underwent PRK (a total of 200 eyes) were enrolled in the present study. The subjects were assigned to two groups. Read More

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February 2022

The use of soft contact lens for intraocular foreign body removal to avoid inadvertent cataract formation.

J Surg Case Rep 2021 Oct 5;2021(10):rjab404. Epub 2021 Oct 5.

Ophthalmology Department, Lebanese University, Beirut, Lebanon.

Ocular injuries carry a significant morbidity worldwide. Visual outcomes vary depending on the mechanism of injury, the damage on arrival and the surgical technique used. The presence of an intraocular foreign body further complicates matters, due to its constituents, the infectious potential, and/or damage to intraocular structures. Read More

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October 2021

Case Report: Dry Eye Management Leads to Early Diagnosis of Seventh Nerve Schwannoma.

Optom Vis Sci 2021 10;98(10):1156-1159

Significance: Facial nerve schwannomas are rare tumors that are usually benign and relatively slow in their progression. Common symptoms include facial neuropathy, auditory deficiencies, and parotid masses. Because of slow progression, symptoms are often present for over a year before an appropriate diagnosis is made. Read More

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October 2021

Profile of a new extended range-of-vision IOL: a laboratory study.

Graefes Arch Clin Exp Ophthalmol 2022 Mar 4;260(3):913-916. Epub 2021 Oct 4.

Department of Medicine, Surgery and Health Sciences, University of Trieste, Trieste, Italy.

Purpose: To evaluate the surface profile of a new-generation extended range-of-vision intraocular lens (IOL) and to compare it with that obtained for a monofocal IOL based on the same platform.

Methods: Prospective, experimental, laboratory study comparing the surface profile of the DFT015 (AcrySof IQ Vivity; Alcon Laboratories, Inc.), a new-generation presbyopia-correcting IOL, with the profile of the SN60WF (AcrySof IQ; Alcon Laboratories, Inc. Read More

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Fusarium keratitis as a growing problem - case report and literature review.

Ann Agric Environ Med 2021 Sep 23;28(3):409-413. Epub 2020 Nov 23.

Department of Vitreoretinal Surgery, Medical University, Lublin, Poland.

Introduction And Objectives: With the rising number of contact lens users, there has been observed an increasing number of patients admitted to ophthalmology wards with severe keratitis, including those of fungal etiology. One of the most devastating specimens is Fusarium spp. If not diagnosed and treated from the onset of the symptoms, it can lead to severe visual loss, or even blindness. Read More

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September 2021

Accelerated CXL Versus Accelerated Contact Lens-Assisted CXL for Progressive Keratoconus in Adults.

J Refract Surg 2021 Sep 1;37(9):623-630. Epub 2021 Sep 1.

Purpose: To compare the clinical and tomographic properties of adult patients with keratoconus treated with accelerated corneal cross-linking (A-CXL) versus accelerated contact lens-assisted corneal cross-linking (A-CACXL).

Methods: Patients who underwent A-CXL and A-CACXL due to progressive keratoconus were enrolled from January 2015 to January 2018 in this retrospective case-control study. The treatment group (minimum corneal thickness of less than 400 µm after epithelium removal; 30 patients, 30 eyes) was treated with A-CACXL; the control group (minimum corneal thickness of 400 µm or greater, 32 patients, 32 eyes) was treated with A-CXL. Read More

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September 2021

Determining the information needs of contact lens wearers for better education and more support: a qualitative study.

BMC Ophthalmol 2021 Sep 7;21(1):325. Epub 2021 Sep 7.

Department of Health Information Sciences, Faculty of Management and Medical Information Sciences, Kerman University of Medical Sciences, Kerman, Iran.

Background: Designing educational interventions tailored to the needs of Contact Lens Wearers (CLWs) are important and necessary. The present study aimed to determine the information needs of CLWs to educate and provide information to them to increase their knowledge and reduce complications and non-compliance behaviors.

Methods: A qualitative approach was applied and semi-structured interviews were conducted in three contact lenses (CL) clinics in Iran among all their practitioners and 24 purposively selected patients. Read More

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September 2021