scholarly journals Meiboscore Correlation between Contact Lenses Weares and No Contact Lenses Weares in a Young Population

2020 ◽  
pp. 22-26
Author(s):  
E. Pateras ◽  
K. Karabatsas
Keyword(s):  
Contact Lens ◽  
Contact Lenses ◽  
Morphological Changes ◽  
Meibomian Gland ◽  
Young Population ◽  
Software Module ◽  
Total Period ◽  
Contact Lens Wear ◽  
Meibomian Glands ◽  
The University

Purpose: To compare the morphological changes in the meibomian glands and meibomian glands loss between contact lens and non-contact lenses wears in a young population. The contact lens wearers wore C.L. for max 6 years. Methods: Examination of the meibomian gland (MG) by using a corneal topographer CSO MODI 2 incorporating Phoenix-Meibography Imaging software module from January to June 2019. 80 volunteered students of the University of West Attics participated, and all the subjects selected had no obvious ophthalmological symptoms, aged 19 to 22 years. Results: The Arithmetic mean of Meiboscore for those who did not wear C.L. was 1,23 MGL, while for the C.L. wearers was 2,53 MGL. Conclusion: This Clinical research compares the meiboscore of contact lens wearers at a young age (min. 4 years contact lens wearers) and those who never tried to wear. This study showed that there is a relation between meibomian glands loss (MGL) and contact lens wear. Our observations showed that there a small but positive correlation, as the total period of C.L. wear increases the meiboscore increases. In addition, cumulative frequency % showed this slight increase in meiboscore.

scholarly journals Preliminary Clinical Exploration of Scleral Lens Performance on Normal Eyes

2018 ◽  
Vol 2 (2) ◽  
pp. e14-e21
Author(s):  
Melissa Barnett ◽  
Jonathon Ross ◽  
Blythe Durbin-Johnson
Keyword(s):  
Visual Acuity ◽  
Contact Lens ◽  
Healthy Subjects ◽  
Contact Lenses ◽  
Front Surface ◽  
Contact Lens Wear ◽  
Factors Associated ◽  
Rigid Contact ◽  
Lens Wear ◽  
Spectacle Correction

Abstract Objectives: The purpose of this study was to evaluate the performance (i.e. vision, comfort and fit) of spherical and front-surface toric scleral lenses in subjects with regular, healthy corneas. Methods: Scleral lenses were fitin the eyes (n = 16) of healthy subjects (n = 9) with regular corneas, absent of pathology, and studied using an observational, multi-visit design. Lens fit was objectively evaluatedby an experienced practitioner.Following 1 month of successful lens wear, participants completedsubjective satisfaction surveys regarding the scleral lens wearing experience. Results:  According to participant surveys, scleral lenses were subjectively preferred over soft toric or gas permeable contact lenses in 88% of eyes, including in all eyes fit with a front-surface toric scleral lens (n = 3). Seventy-five percent (75%) of eyes achieved visual acuity of 0.1 logMAR or better, while all eyes with prior spectacle wear achieved visual acuity with a scleral lens within 1 Snellen line of spectacle correction. Seventy-five percent (75%) of eyes achieved good subjective comfort with a scleral lens. No participants reported poor subjective vision and/or comfort. Conclusions:  Our findings suggest that subjects preferred the performance of a scleral lens (spherical or front-surface toric) compared to a soft toric or gas permeable contact lens. Moreover, scleral lenses may provide a viable, alternative contact lens modality option for patients considering discontinuation of traditional soft toric and/or rigid contact lens wear; so long as the factors associated with hypoxia remain minimized. Key Words:  scleral lens; scleral contact lens; front-surface toric scleral lens; lens performance; normal eyes; healthy eyes

Tribological classification of contact lenses – From coefficient of friction to sliding work: Can contact lens wear help you burn calories?

2018 ◽  
Vol 41 ◽  
pp. S41
Author(s):  
Samuele Tosatti ◽  
Olof Sterner ◽  
Rudolf Aeschlimann ◽  
Stefan Zuercher ◽  
Charles Scales ◽  
...  
Keyword(s):  
Coefficient Of Friction ◽  
Contact Lens ◽  
Contact Lenses ◽  
Contact Lens Wear ◽  
Lens Wear

scholarly journals Personal hygiene risk factors for contact lens-related microbial keratitis

2020 ◽  
Vol 5 (1) ◽  
pp. e000476
Author(s):  
Anna Stellwagen ◽  
Cheryl MacGregor ◽  
Roger Kung ◽  
Aristides Konstantopoulos ◽  
Parwez Hossain
Keyword(s):  
Risk Factors ◽  
Risk Factor ◽  
Contact Lens ◽  
Contact Lenses ◽  
Healthcare Services ◽  
University Hospital ◽  
Personal Hygiene ◽  
Microbial Keratitis ◽  
Contact Lens Wear ◽  
Lens Wear

ObjectiveMicrobial keratitis is a sight-threatening complication of contact lens wear, which affects thousands of patients and causes a significant burden on healthcare services. This study aims to identify compliance with contact lens care recommendations and identify personal hygiene risk factors in patients who develop contact lens-related microbial keratitis.Methods and analysisA case–control study was conducted at the University Hospital Southampton Eye Casualty from October to December 2015. Two participant groups were recruited: cases were contact lens wearers presenting with microbial keratitis and controls were contact lens wearers without infection. Participants underwent face-to-face interviews to identify lens wear practices, including lens type, hours of wear, personal hygiene and sleeping and showering in lenses. Univariate and multivariate regression models were used to compare groups.Results37 cases and 41 controls were identified. Showering in contact lenses was identified as the greatest risk factor (OR, 3.1; 95% CI, 1.2 to 8.5; p=0.03), with showering daily in lenses compared with never, increasing the risk of microbial keratitis by over seven times (OR, 7.1; 95% CI, 2.1 to 24.6; p=0.002). Other risks included sleeping in lenses (OR, 3.1; 95% CI, 1.1 to 8.6; p=0.026), and being aged 25–39 (OR, 6.38; 95% CI, 1.56 to 26.10; p=0.010) and 40–54 (OR, 4.00; 95% CI 0.96 to 16.61; p=0.056).ConclusionThe greatest personal hygiene risk factor for contact lens-related microbial keratitis was showering while wearing lenses, with an OR of 3.1, which increased to 7.1 if patients showered daily in lenses. The OR for sleeping in lenses was 3.1, and the most at-risk age group was 25–54.

scholarly journals Impact of Rigid Gas Permeable Contact Lenses Removal on Anterior and Posterior Corneal Surfaces in Keratoconus Patients

2019 ◽  
Author(s):  
Motohiro Itoi ◽  
Koji Kitazawa ◽  
Hisayo Higashihara ◽  
Chie Sotozono
Keyword(s):  
Contact Lens ◽  
Contact Lenses ◽  
Corneal Thickness ◽  
Anterior Segment ◽  
Corneal Surface ◽  
Contact Lens Wear ◽  
Surface Areas ◽  
The Impact ◽  
Lens Wear ◽  
Anterior Posterior

AbstractPurposeTo evaluate the impact of removal of rigid gas-permeable (RGP) contact lenses on the anterior and posterior cornea surfaces of eyes with keratoconus.MethodsEight eyes of 8 patients with keratoconus (KC) (age 34.3 ± 15.3 years; range 19–60 years) were enrolled. Anterior segment optical coherence tomography (AS-OCT) was performed at 1, 5, 10, 20, and 60 minutes after the patients removed their RGP contact lenses. Measurements included anterior and posterior best-fit sphere (BFS); elevation values and corneal surface areas; corneal thickness at the thinnest point; and the anterior-posterior ratio of the corneal surface (As/Ps) between 1 minute and 60 minutes after RGP contact lens removal.ResultsAnterior and posterior elevation values and corneal surface areas showed significant increases, whereas anterior and posterior BFS and central corneal thickness decreased significantly (P < 0.01) between 1 minute and 60 minutes after RGP contact lens removal. No statistically significant differences were found in the As/Ps ratio during the first hour after suspending RGP contact lens wear.ConclusionsWe found that the patients with keratoconus experienced significant changes in both the anterior and posterior corneal shape for 60 minutes after removal of RGP contact lenses.

scholarly journals Clinical characteristics of keratoconus patients at the University of KwaZulu-Natal eye clinic

2020 ◽  
Vol 79 (1) ◽  
Author(s):  
Shishka Rupnarain ◽  
Nomvelo Madlala ◽  
Ntokozo Memela ◽  
Simpiwe Ngcobo ◽  
Nonkazimulo Shabalala ◽  
...  
Keyword(s):  
Contact Lens ◽  
Clinical Characteristics ◽  
Contact Lenses ◽  
Corneal Ectasia ◽  
Kwazulu Natal ◽  
Rigid Contact ◽  
The Mean ◽  
The University ◽  
Severe Grade ◽  
Eye Clinic

Background: Patients with keratoconus, which is a common corneal ectasia, often present to specialised clinics for management. Understanding the clinical characteristics of keratoconus patients can help improve knowledge of the presentation and management of this corneal ectasia and predict the needs of the clinic providing care for affected individuals.Aim: To describe the clinical characteristics of keratoconus patients attending the University of KwaZulu-Natal (UKZN) eye clinic.Setting: University of KwaZulu-Natal eye clinic.Methods: The study used a retrospective research design by reviewing the clinical record cards of patients attending the UKZN contact lens eye clinic over a 4-year period (January 2014 to December 2017). Data related to age, clinical characteristics and method of management of the keratoconus patients were extracted and analysed using descriptive statistics.Results: Just less than one-quarter of all patients (n = 1210) attending the UKZN contact lens eye clinic had keratoconus that was most often bilateral. The mean age at presentation was 25.2 ± 9.6 years with 74% of the sample being younger than 30 years. More than 90% (n = 419) of the sample reported refractive reasons as the primary reason for presenting to the clinic. The majority of the sample had severe keratoconus (n = 257) and rigid contact lenses were most commonly used for management of keratoconus patients.Conclusion: Keratoconus presents at an early age with a more severe grade and it is most commonly managed using rigid contact lenses. These findings should be considered for keratoconus screening, diagnosis and treatment programmes in KwaZulu-Natal.

scholarly journals Noncontact Meibography in Patients with Keratoconus

2019 ◽  
Vol 2019 ◽  
pp. 1-6
Author(s):  
Engy Mohamed Mostafa ◽  
Marwa Mahmoud Abdellah ◽  
Ashraf Mostafa Elhawary ◽  
Amr Mounir
Keyword(s):  
Morphological Changes ◽  
Tear Film ◽  
Cost Effective ◽  
Lower Eyelid ◽  
Meibomian Gland ◽  
Control Group ◽  
Schirmer Test ◽  
Ocular Surface Disease Index ◽  
Meibomian Glands ◽  
Grade 3

Purpose. To examine the morphological changes in the meibomian glands of patients with keratoconus as well as to study the relationship between these changes in the morphology and several tear film parameters. Methods. Examination of the meibomian gland (MG) of 300 keratoconus patients presenting to the center using infrared noncontact meibography system (Sirius, CSO, Italy) between January 2017—January 2019. 100 eyes of healthy individuals were also enrolled as a control group. Tear breakup time (TBUT) test and Schirmer test II were evaluated. Subjective symptoms were also assessed using Ocular Surface Disease Index (OSDI). Results. Mean age of keratoconus patients was 19 ± 12 years and 21 ± 14 years in control group. Average TBUT was 4.9 ± 2.1 sec. and average Schirmer test was 5.3 ± 2.2 mm which was significantly lower than control group (p=0.05). Meibomian gland dropout in the lower eyelid of the keratoconus group was as follows: grade 0 (no loss of meibomian glands): 100 eyes; grade 1 (gland dropout area <1/3 of the total meibomian glands): 85 eyes; grade 2 (gland dropout area 1/3 to 2/3): 68 eyes; and grade 3 (gland dropout >2/3): 47 eyes. Conclusion. Keratoconus shows significant meibomian gland dropout and distortion that can be recorded by noncontact meibography. Sirius meibography is a simple, cost-effective method of evaluating meibomian gland dropout as a part of the routine refractive examination.

scholarly journals Corneal Ring Infiltrates Caused by Serratia marcescens in a Patient with Human Immunodeficiency Virus

2016 ◽  
Vol 7 (2) ◽  
pp. 359-363
Author(s):  
Winai Chaidaroon ◽  
Sumet Supalaset
Keyword(s):  
Human Immunodeficiency Virus ◽  
Serratia Marcescens ◽  
Contact Lens ◽  
Contact Lenses ◽  
Hand Movement ◽  
Treatment Result ◽  
Blurred Vision ◽  
Contact Lens Wear ◽  
Immunodeficiency Virus ◽  
Hiv 1

Purpose: To describe corneal ring infiltrates caused by Serratia marcescens in a patient with human immunodeficiency virus (HIV-1) who wore contact lenses. Methods: A case study of a patient with keratitis due to an infection caused by S. marcescens and exhibiting corneal ring infiltrates was reviewed for history, clinical manifestation, microscopic study, and management. Results: A 29-year-old man who had a history of contact lens wear and HIV-1 infection was admitted to hospital because of blurred vision, redness, and corneal infiltrates in the shape of a ring in the left eye. The visual acuity (VA) in both eyes was hand movement (uncorrected). Corneal scrapings were performed. The culture results of the corneal specimens revealed S. marcescens. The culture results of the contact lens disclosed the same organism. The corneal ulcer responded well to treatment with topical gentamycin sulfate 14 mg/ml. The final VA remained hand movement. Conclusions: S. marcescens can cause ring infiltrates in a HIV-1 patient who wears contact lenses. The treatment result for S. marcescens keratitis in a HIV-1 patient who wore contact lenses was favorable after intensive use of fortified topical antibiotics.

scholarly journals The Risk of Contact Lens Wear and the Avoidance of Complications

2013 ◽  
Vol 1 (2) ◽  
pp. 80-85 ◽  
Author(s):  
Farihah Tariq ◽  
Peter Koay
Keyword(s):  
Risk Factors ◽  
Contact Lens ◽  
Contact Lenses ◽  
Health Concern ◽  
Refractive Errors ◽  
Microbial Keratitis ◽  
Contact Lens Wear ◽  
Good Contact ◽  
Number Of Individuals ◽  
Lens Wear

Contact lenses are lenses placed on the surface of the cornea to correct refractive errors such as myopia (short-sightedness), hyper­metropia (far-sightedness) and astigmatism. Lens-related complications are becoming a greater health concern as increasing number of individuals are using them as an alternative to spectacles. Contact lenses alter the natural ocular environment and reduce the efficacy of the innate defences. Although many complications are minor, microbial keratitis is potentially blinding and suspected cases should be rapidly diagnosed and referred to an ophthalmologist for treatment. Several risk factors have been identified with extended wear, poor hand hygiene, inadequate lens and lens-case care being the most significant. Promotion of good contact lens hygiene and practices are essential to reduce the adverse effects of contact lens wear.

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