scholarly journals Clinical Performance of Toris K Contact Lens in Patients with Moderate to Advanced Keratoconus: A Real Life Retrospective Analysis

2016 ◽  
Vol 2016 ◽  
pp. 1-6 ◽  
Author(s):  
Ihsan Yilmaz ◽  
Ferah Ozcelik ◽  
Berna Basarir ◽  
Gokhan Demir ◽  
Gonul Durusoy ◽  
...  
Keyword(s):  
Visual Acuity ◽  
Contact Lens ◽  
Contact Lenses ◽  
Clinical Performance ◽  
Real Life ◽  
Soft Contact Lenses ◽  
Corrected Visual Acuity ◽  
Uncorrected Visual Acuity ◽  
Central Cone ◽  
The Mean

Objectives.To evaluate the visual performance of Toris K soft contact lenses in patients with moderate-to-advanced keratoconus and also to compare the results according to cone types, cone location, and severity of keratoconus.Materials and Methods.Sixty eyes of 40 participants were included in this retrospective study. Uncorrected visual acuity (UCVA), best-spectacle corrected visual acuity (BCVA), best-contact lens corrected visual acuity (BCLCVA), and comfort rating via visual analogue scales (VAS) were measured.Results.The mean age was 27.3 ± 8.6 years (range: 18 to 54). The mean logMAR UCVA, BCVA, and BCLCVA were 0.85 ± 0.38 (range: 0.30–1.30), 0.47 ± 0.27 (range: 0.10–1.30), and 0.16 ± 0.20 (range: 0–1.00). There were significant increases in visual acuities with contact lenses (p<.05). BCLCVA was significantly better in oval type than globus type (p=.022). UCVA and BCLCVA were significantly better in moderate keratoconus group (p=.015,p=.018). The mean line gain in Snellen was 3.6 ± 1.8 lines (range: 0–7 lines). The mean line gain was higher in central cone group than paracentral cone group and oval group than globus group (p=.014,p=.045). The mean VAS score was 8.14 ± 1.88 (range: 6–10).Conclusions.Toris K can improve visual acuity of patients with keratoconus. Toris K is successful even in the moderate and advanced form of the disease.

Use of new-generation hybrid contact lenses for managing challenging corneas

2020 ◽  
pp. 112067212094275
Author(s):  
Ibrahim Inan Harbiyeli ◽  
Elif Erdem ◽  
Puren Isik ◽  
Meltem Yagmur ◽  
Reha Ersoz
Keyword(s):  
Visual Acuity ◽  
Medical Records ◽  
Contact Lenses ◽  
Corrected Visual Acuity ◽  
Manifest Refraction ◽  
Uncorrected Visual Acuity ◽  
The Mean ◽  
New Generation ◽  
Generation Hybrid ◽  
Irregular Astigmatism

Introduction: To evaluate the safety and efficacy of new-generation hybrid contact lenses (HCL) among patients with irregular astigmatism. Methods: Medical records of 25 patients fit with new-generation HCL (Eyebrid® and AirFlex®) were retrospectively reviewed. The data collected included etiology of irregular astigmatism, uncorrected visual acuity, manifest refraction, spectacle-corrected visual acuity (S-CDVA), steep / flat keratometric values, corneal astigmatism, records of rigid / soft CL fitted before HCL, all parameters of the trial lenses, and the final prescribed HCL parameters and HCL-CDVA. Results: The study included 34 eyes from 25 patients (nine females and 16 males) with an average age of 29 ± 13 (ranging from 8–56) years. In total, 25 eyes with keratoconus, four with post - keratoplasty astigmatism, three with irregular astigmatism due to corneal trauma and two with residual astigmatism after radial keratotomy were fit with HCL. The mean S-CDVA (logMAR) improved significantly from 0.76 ± 0.41 to 0.14 ± 0.15 with HCL ( p < 0.01). The most common indication for HCL was inability to fit with rigid gas permeable (RGP) lenses (22 eyes). The average number of lenses to successful fit was 1.4 (mode, 1; median, 1) and ideal fit was achieved with the first trial lens in 25 eyes (73%). Seven patients (nine eyes, 36%) discontinued lens use within the first 6 months because of discomfort (six eyes, 24%), ocular allergy (two eyes, 8%) and tearing of contact lens (one eye, 4%). Discussion: New-generation HCL may be a suitable option for fitting challenging corneas with irregular astigmatism that cannot be rehabilitated efficiently with rigid lenses.

scholarly journals Real-Life Management of Patients with Retinal Vein Occlusion Using I-Macula Web Platform

2017 ◽  
Vol 2017 ◽  
pp. 1-5 ◽  
Author(s):  
Massimo Nicolò ◽  
Monica Bonetto ◽  
Raffaella Rosa ◽  
Donatella Musetti ◽  
Maria Musolino ◽  
...  
Keyword(s):  
Visual Acuity ◽  
Macular Edema ◽  
Retinal Vein Occlusion ◽  
Real Life ◽  
Macular Thickness ◽  
Central Macular Thickness ◽  
Vein Occlusion ◽  
Corrected Visual Acuity ◽  
The Mean ◽  
Web Platform

Aim.Real-lifeevaluation in the management of patients affected by macular edema secondary to retinal vein occlusion.Material and Methods. A retrospective, observational study using theI-Macula Webplatform.Results. Thirty-five patients (37 eyes; 15 females and 20 male) affected by RVO were analysed. At 12 months, there was a statistically significant improvement of best-corrected visual acuity (p=0.0235) and central macular thickness (p<0.0001). The mean change in visual acuity was 8.9 letters. Twenty-seven eyes underwent DEX implant (n=62; mean: 2.29) only. Of these, 8, 4, 14, and 1 eyes underwent 1, 2, 3, and 4 DEX implants, respectively. The remaining 10 eyes were also injected with ranibizumab (n=49; mean: 4.9). At 12 months, 12 eyes (32.5%) presented a dry macula, whereas the remaining 25 eyes (67.5%) still had macular edema. Mean interval between the first and second treatment (T1) and between the second and third treatment (T2) were 5.15 and (T2) 3.7 months, respectively. Where only DEX implants were received, T1 and T2 was 5.1 and 4.9 months, respectively.Conclusions. This study confirms that DEX implants and/or anti-VEGF drugs improve visual acuity and central macular thickness in patients affected by RVO.

Pancorneal Contact Lens with a Toric Edge: A New Concept in Keratoconus

2011 ◽  
Vol 21 (6) ◽  
pp. 685-690 ◽  
Author(s):  
Sizar Kamar ◽  
Charles Vervaet ◽  
Gregohus P.M. Luyten ◽  
Martine J. Jager
Keyword(s):  
Visual Acuity ◽  
Contact Lens ◽  
Marked Improvement ◽  
Corneal Topography ◽  
Corrected Visual Acuity ◽  
The Mean ◽  
Best Corrected Visual Acuity

Purpose. To investigate whether fitting a patient with keratoconus to a pancorneal toric rigid gas-permeable (RGP) contact lens leads to a change in corneal compression and improves the best-corrected visual acuity (BCVA) and keratometry values. Methods. Thirty eyes with keratoconus were fitted with a newly designed pancorneal toric RGP contact lens. Each patient was examined at the time of enrollment and after having used the new contact lens for at least 2 months. Corneal topography was performed both times. Results. A change in corneal compression was noticed in 23 eyes (77%). Following the use of the pancorneal toric RGP contact lens, the average BCVA improved significantly (p=0.007), with a mean BCVA of 0.63 (SD 0.15) before and 0.70 (SD 0.18) after using the toric contact lens. No significant changes were seen in the mean vertical and horizontal K-values or the mean E-values. Conclusions. While no significant measurable differences in K- and E-values were observed, fitting of a pancorneal toric RGP contact lens in keratoconus led to a marked improvement in visual acuity and a visible change in corneal compression.

scholarly journals “OKVision OKV-SL” customizable soft contact lenses fitting guide

The Eye ◽  
2020 ◽  
Vol 22 (4(132)) ◽  
pp. 61-68
Author(s):  
A. V. Myagkov ◽  
Zh. N. Poskrebysheva
Keyword(s):  
Visual Acuity ◽  
Contact Lens ◽  
Contact Lenses ◽  
Soft Contact ◽  
Soft Contact Lenses ◽  
Vision Correction

The purpose of this guide is to introduce ophthalmologists and optometrists to the basics of fitting of customizable soft contact lenses, which is an important knowledge that enhances practitioners’ skills and helps provide a high visual acuity for many patients.Material and methods. This guide sets forth the principles of calculation of contact lens parameters, defines parameters specific to customizable lenses as well as assessment of the fit and the rules of lens handling and care.Conclusions. Following the fitting guide ensures a successful vision correction with customizable soft contact lenses for both doctor and the patient.

scholarly journals Clinical Experience of Using Intraocular Lenses

2019 ◽  
Vol 16 (3) ◽  
pp. 304-309
Author(s):  
A. D. Chernysheva ◽  
V. O. Afanasyeva
Keyword(s):  
Visual Acuity ◽  
Postoperative Period ◽  
Early Postoperative Period ◽  
Intraocular Lenses ◽  
Corrected Visual Acuity ◽  
Uncorrected Visual Acuity ◽  
The Mean ◽  
Basic Studies ◽  
The Given ◽  
Observation Period

Aim: to analyze the data obtained from using of intraocular lenses — the hydrophobic IOL Citrin and a hydrophilic IOL Aquamarine, produced by Russian company — NanOptic. Materials and methods. A total of 56 IOLs, produced by NanOptic (38 hydrophobic IOLs Citrine and 18 hydrophilic IOLs Aquamarine) were implanted. The observation period was from 3 to 12 months. The indication for phacoemulsification was age cataract. The age of the patients was 54–85. Patients before the operation were conducted basic studies. The mean uncorrected visual acuity before the operation was (UCVA) 0.121 ± 0.120 (0.001–0.3), and the mean corrected visual acuity was (BCVA) 0.187 ± 0.140 (0.001–0.6). All patients underwent standard phacoemulsification. Results. The early postoperative period was without any complications. In the postoperative period the mean UCVA in patients with “Citrine” and “Aquamarine” was 0.90 ± 0.10 (0.7–1.0) and 0.96 ± 0.07 (0.8–1.0) accordingly, and the mean BCVA was 0.94 ± 0.07 (0.8–1.0) and 0.99 ± 0.02 (0.9–1.0) accordingly. In all cases, the refraction obtained was consistent with the prediction. The error in IOL calculation was minimal and permissible. There weren’t any case of secondary cataract in patients with hydrophobic IOLs, and 3 cases of lens posterior capsule fibrosis of 1 degree in patients with hydrophilic IOLs in 3–12 months observation. The position of IOL in capsule bag was stable. Conclusions. The results of implantation of new Russian-made IOLs on the given parameters appeared to be satisfactory, that allows to recommend them for implantation in cataract surgery.

scholarly journals Results of Cataract Extraction in Patients with Corneal Opacity

2019 ◽  
Vol 16 (2) ◽  
pp. 179-184
Author(s):  
E. A. Ivachev ◽  
E. V. Anisimova ◽  
I. P. Denisova
Keyword(s):  
Visual Acuity ◽  
Intraocular Lens ◽  
Contact Lenses ◽  
Cataract Extraction ◽  
Corneal Opacity ◽  
Intraocular Lenses ◽  
Lens Extraction ◽  
Soft Contact Lenses ◽  
Corrected Visual Acuity ◽  
Best Corrected Visual Acuity

Purpose. To evaluate the effectiveness of cataract extraction in patients with varying degrees of corneal opacity.Patients and methods. We performed cataract extraction with implantation of the intraocular lenses of 14 eyes (9 patients) with varying degree of corneal opacity. The causes of corneal opacities were: keratitis in anamnesis — 6 cases, the result of wearing soft contact lenses — 2 eyes, eye injury — 2, the outcome of dermatitis of unspecified genesis with eye damage — 3, perforation of the corneal ulcer — 1 case. In 9 eyes, opacity of the cornea occupied the optic part of the cornea, in 5 cases, the opacity of the cornea was in the paraoptic zone. The middle uncorrected visual acuity of all cases is 0.05 ± 0.03, and the middle best corrected visual acuity is 0.14 ± 0.07. The phacoemulsification of the cataract with implantation of the intraocular lens was performed for all the patients.Results. There were no complications during the operation, in the early and late postoperative periods. As a result of cataract extraction, all patients, regardless of the degree of cornea opacity, noted vision improvement. On the first day after the operation, the middle best corrected visual acuity was 0.06 ± 0.02 in 4 eyes, in 10 cases the middle best corrected visual acuity was 0.09 ± 0.03. The middle best corrected visual acuity 7 days after the surgery was 0.31 ± 0.07. After 6 months of observation of patients with corneal opacity after phacoemulsification of the cataract with implantation of the intraocular lens, the most corrected visual acuity was 0.27 ± 0.19.Conclusions. All patients with corneal opacity of varying degrees of intensity after cataract extraction noted improved vision. The central location of the opacity of the cornea significantly reduced visual acuity, and paraoptic — influenced the vision to a lesser extent. The degree of cornea turbidity was also affected the initial visual acuity — the more clouding and the depth of the cornea, the lower the vision. The result of the lens extraction also depended on the maturity of the cataract — with a more turbid lens the result was higher in relation to preoperative indices. 

Toric intraocular lens for correction of high corneal astigmatism in cataract patients

2020 ◽  
Vol 1 (2) ◽  
pp. 83-88
Author(s):  
Irene Simo ◽  
◽  
Laura Remón ◽  
Keyword(s):  
Visual Acuity ◽  
Intraocular Lens ◽  
Medical Engineering ◽  
Toric Intraocular Lens ◽  
Toric Iol ◽  
Corrected Visual Acuity ◽  
Uncorrected Visual Acuity ◽  
Before And After ◽  
The Mean ◽  
Axis Rotation

AIM: To evaluate the efficacy of Bi-Flex toric intraocular lens (T-IOL; Medicontur, Medical Engineering, Ltd., Inc.) implantation to correct preexisting astigmatism in patients having cataract surgery. METHODS: This retrospective consecutive study included 22 eyes of 16 patients with more than 2.50 diopters (D) of corneal preexisting astigmatism having cataract. Preoperative and postoperative uncorrected visual acuity (UCVA), best corrected visual acuity (BCVA), objective and subjective refraction and keratometric and topographic cylinder were measured. Postoperative the toric IOL axis was evaluated using vector analysis. RESULTS: Postoperatively, subjective refractive cylinder was reduced significant (P<0.05) from 4.05±1.53 D to 1.35±0.86 D. The component J0 reduced in magnitude from -0.81±2.02 D to -0.12±0.62 D (P<0.05). Both, UCVA and BCVA improved significantly at 1mo after surgery (P<0.05 in both cases). After the surgery, the UCVA and BCVA were 0.24±0.19 and 0.06±0.08, respectively. The mean toric IOL axis rotation was 2.95±5.25 degree, with rotation less than 10 degrees in 86.36% of eyes. No differences in mean keratometric values obtained before and after surgery were found (P>0.05 for J0 and J45). CONCLUSION: Implantation of the Bi-Flex toric IOL is a safe and effective method to correct the preexisting regular astigmatism (greater than 2.50D).

Visual Acuity, Contrast Sensitivity Function, and Twilight Vision of Soft and Rigid Gas-Permeable Contact Lens Wearers

2020 ◽  
Author(s):  
Iva Krolo ◽  
Aida Kasumović ◽  
Ivana Radman ◽  
Ivan Sabol ◽  
Maja Malenica Ravlić ◽  
...  
Keyword(s):  
Visual Acuity ◽  
Prospective Study ◽  
Contrast Sensitivity ◽  
Contact Lens ◽  
Contact Lenses ◽  
Sensitivity Function ◽  
Visual Performance ◽  
Corrected Visual Acuity ◽  
Before And After ◽  
Spectacle Correction

Abstract Aim of study was to assess the visual acuity (VA) before and after correction with soft and rigid gas permeable contact lenses (CLs) in healthy subjects, as well as their visual perfomance, including contrast sensitivity function (CSF), and twilight vision (TV). 60 eyes corrected with soft contact lenses (SCLs) and 38 eyes with rigid gas permeable contact lenses (RGPCLs) were enrolled in this prospective study. The following measurements were obtained: best spectacle–corrected visual acuity (BSCVA), best contact lens-corrected visual acuity (BCLCVA), TV, and CSF. Parameters were evaluated before and after CLs fitting and 2 months after the baseline. Exclusion criteria included anterior and posterior segment pathology, amblyopia, prior CLs wear, and ocular surgery. When analyzing TV, results showed superiority of CLs to the spectacle correction, with no statistical difference regarding the CL type. As for the CSF, RGPCLs were superior to both SCLs and spectacle correction. Visual performance was better in group fitted with RGPCLs oppose to SCLs group. CL wear improved visual performance compared to spectacles. This is the first prospective study to simultaneously investigate changes in VA, CS, and TV in SCL and RGCL wear, suggesting RGPCLs as the correction of choice for achieving optimal visual performance.

scholarly journals Prevalence and Profile of Central Serous Chorioretinopathy in an Indian Cohort

2019 ◽  
Vol 11 (1) ◽  
pp. 5-10
Author(s):  
Niroj Kumar Sahoo ◽  
Sumit Randhir Singh ◽  
Priyanka Kammari ◽  
Ganesh Babu Jonnadula ◽  
Anthony Vipin Das ◽  
...  
Keyword(s):  
Visual Acuity ◽  
South India ◽  
Steroid Use ◽  
Shift Workers ◽  
Patient Profile ◽  
Corrected Visual Acuity ◽  
Uncorrected Visual Acuity ◽  
History Of ◽  
The Mean ◽  
Set Up

Aims: To determine the profile of CSCR patients from a tertiary health care set-up in India. Methods and Material: A total of 2780 (2447 males and 333 females) patients with a diagnosis of CSCR were included. Data regarding the demographics, profile of CSCR and systemic diseases, if any, were collected from a tertiary eye care network in South India from January 2012 to December 2016. Results: The prevalence of CSCR was found to be 1.7% (A total 2780 patients, with mean age of 42.3±10.1 years). A total of 2031 patients had a unilateral and 749 had bilateral involvement. Acute and chronic CSCR was seen in 1932 (69.5%) and 848 (30.5%) eyes respectively. The mean uncorrected visual acuity of the patients was 0.51±0.45 log MAR (Snellen equivalent 20/60) while the mean best corrected visual acuity was 0.32±0.40 log MAR (Snellen equivalent 20/40). History of smoking and steroid use was present in 214 (7.7%) and 758 (27.3%) individuals respectively. Hypertension and diabetes mellitus was present in 106 (3.8%) and 51 (1.8%) patients respectively. Most of patients {824 (29.6%) patients} were shift-workers. Laser was done in 336 (12.1%) acute and 223 (8%) chronic CSCR patients. Photodynamic therapy was used in 12 acute and 12 chronic cases. Conclusion: Prevalence of CSCR was 1.7%. The study provides an overview of patient profile among Indian subjects.

scholarly journals Ferrara Intrastromal Corneal Ring Segments

2016 ◽  
Vol 5 (3) ◽  
pp. 114-127 ◽  
Author(s):  
Leonardo Torquetti ◽  
Jordana Sandes
Keyword(s):  
Visual Acuity ◽  
Clinical Experience ◽  
Contact Lens ◽  
Corrected Visual Acuity ◽  
Intrastromal Corneal Ring ◽  
Uncorrected Visual Acuity ◽  
Best Corrected Visual Acuity

ABSTRACT The Ferrara intrastromal corneal ring segments (ICRS) are designed to treat ectatic corneal disorders, especially keratoconus. They have been used to reshape keratoconic corneas to improve uncorrected visual acuity, best-corrected visual acuity, contact lens tolerance and to delay or prevent the need for keratoplasty. Intrastromal corneal ring segments have several distinct and important advantages. The Ferrara ICRS have been used largely in several countries for the treatment of primary and secondary ectatic corneal disorders. This article reviews the latest data published and the clinical experience/findings on the treatment of keratoconus by the Ferrara ICRS implantation. How to cite this article Torquetti L, Sandes J, Ferrara G, Ferrara P. Ferrara Intrastromal Corneal Ring Segments. Int J Kerat Ect Cor Dis 2016;5(3):114-127.

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