Natural history of corneal haze after corneal collagen crosslinking in keratoconus using Scheimpflug analysis

2016 ◽  
Vol 42 (7) ◽  
pp. 1053-1059 ◽  
Author(s):  
Bia Z. Kim ◽  
Charlotte A. Jordan ◽  
Charles N.J. McGhee ◽  
Dipika V. Patel
Keyword(s):  
Natural History ◽  
Collagen Crosslinking ◽  
Corneal Haze ◽  
History Of ◽  
Corneal Collagen Crosslinking ◽  
Corneal Collagen

Corneal collagen crosslinking in a child with keratoconus

2021 ◽  
pp. 33-38
Author(s):  
E.Y. Markova ◽  
◽  
G.V. Avakyants ◽  
Keyword(s):  
Visual Acuity ◽  
Clinical Case ◽  
Progressive Decrease ◽  
Collagen Crosslinking ◽  
Modern Methods ◽  
History Of ◽  
Corneal Collagen Crosslinking ◽  
Decrease In Visual Acuity ◽  
Corneal Collagen ◽  
Spectacle Correction

This clinical case describes medical history of the patient who came to the clinic with complaints of progressive decrease in visual acuity and intolerance of spectacle correction. In the following article all methods of diagnostic are fully described. We are also mentioning and discuss aspects of modern methods of diagnostic and treatment of keratoconus in children such as corneal collagen crosslinking. Key words: keratoconus, keratoconus in children, corneal collagen crosslinking.

scholarly journals Rate of Corneal Collagen Crosslinking Redo in Private Practice: Risk Factors and Safety

2015 ◽  
Vol 2015 ◽  
pp. 1-8 ◽  
Author(s):  
Joelle Antoun ◽  
Elise Slim ◽  
Rami el Hachem ◽  
Elias Chelala ◽  
Elyse Jabbour ◽  
...  
Keyword(s):  
Risk Factors ◽  
Visual Acuity ◽  
Private Practice ◽  
Allergic Conjunctivitis ◽  
Collagen Crosslinking ◽  
Factors Associated ◽  
Rate Of Progression ◽  
History Of ◽  
Corneal Collagen Crosslinking ◽  
Corneal Collagen

Objective. To report the rate of progression of keratectasia after primary crosslinking (CXL) and evaluate the safety and efficiency of CXL redo.Materials and Methods. We conducted a retrospective analysis of the patients who underwent CXL between 2010 and 2013 at the Beirut Eye Specialist Hospital, Lebanon. Progression of keratectasia was based on the presence of an increase in maximum keratometry of 1.00 D, a change in the map difference between two consecutive topographies of 1.00 D, a deterioration of visual acuity, or any change in the refraction. Primary and redo CXL were done using the same protocol.Results. Among the 221 eyes of 130 patients who underwent CXL, 7 eyes (3.17%) of five patients met the criteria of progression. All patients reported a history of allergic conjunctivitis and eye rubbing and progressed within 9 to 48 months. No complications were noted and all patients were stable 1 year after CXL redo.Conclusion. Allergic conjunctivitis and eye rubbing were the only risk factors associated with keratoconus progression after CXL. A close followup is thus mandatory, even years after the procedure. CXL redo seems to be a safe and efficient technique to halt the progression after a primary CXL.

scholarly journals Outcome of Corneal Collagen Crosslinking for Progressive Keratoconus in Paediatric Patients

2014 ◽  
Vol 2014 ◽  
pp. 1-5 ◽  
Author(s):  
Deepa Viswanathan ◽  
Nikhil L. Kumar ◽  
John J. Males
Keyword(s):  
Young Patients ◽  
Ultraviolet A ◽  
Effective Treatment Option ◽  
Collagen Crosslinking ◽  
Paediatric Patients ◽  
Corneal Grafting ◽  
Minimum Angle ◽  
Corneal Collagen Crosslinking ◽  
The Mean ◽  
Corneal Collagen

Purpose. To evaluate the efficacy of corneal collagen crosslinking for progressive keratoconus in paediatric patients.Methods. This prospective study included 25 eyes of 18 patients (aged 18 years or younger) who underwent collagen crosslinking performed using riboflavin and ultraviolet-A irradiation (370 nm, 3 mW/cm2, 30 min).Results. The mean patient age was 14.3 ± 2.4 years (range 8–17) and mean followup duration was 20.1 ± 14.25 months (range 6–48). Crosslinked eyes demonstrated a significant reduction of keratometry values. The mean baseline simulated keratometry values were 46.34 dioptres (D) in the flattest meridian and 50.06 D in the steepest meridian. At 20 months after crosslinking, the values were 45.67 D (P=0.03) and 49.34 D (P=0.005), respectively. The best spectacle corrected visual acuity (BSCVA) and topometric astigmatism improved after crosslinking. Mean logarithm of the minimum angle of resolution (logMAR) BSCVA decreased from 0.24 to 0.21 (P=0.89) and topometric astigmatism reduced from mean 3.50 D to 3.25 D (P=0.51).Conclusions. Collagen crosslinking using riboflavin and ultraviolet-A is an effective treatment option for progressive keratoconus in paediatric patients. Crosslinking stabilises the condition and, thus, reduces the need for corneal grafting in these young patients.

scholarly journals Intrastromal corneal rings and corneal collagen crosslinking for progressive keratoconus: comparison of two sequences

Eye ◽  
2014 ◽  
Vol 29 (2) ◽  
pp. 294-295 ◽  
Author(s):  
N Saib ◽  
S Bonnel ◽  
J-R Fenolland ◽  
M Abrieu ◽  
C Rambaud ◽  
...  
Keyword(s):  
Collagen Crosslinking ◽  
Corneal Collagen Crosslinking ◽  
Corneal Collagen

Evaluation of changes in corneal biomechanics in eyes with keratectasia

2021 ◽  
pp. 179-187
Author(s):  
B.E. Malugin ◽  
◽  
E.G. Solodkova ◽  
S.V. Balalin ◽  
V.S. Kulikov ◽  
...  
Keyword(s):  
Corneal Thickness ◽  
Corneal Biomechanics ◽  
Corvis St ◽  
Collagen Crosslinking ◽  
The Third ◽  
Corneal Rigidity ◽  
Corneal Collagen Crosslinking ◽  
Early Features ◽  
Healthy Persons ◽  
Corneal Collagen

Purpose. To make a comparative analysis of topographic, tomographic and biomechanical values, measured by Pentacam HR and Corvis ST, in healthy multirefractive cohort versus patients with keratectasia of various severity. Material and methods. The prospective study comprised 237 patients aged from 18 to 47 years, subdivided into three groups. The first group included 174 healthy persons with various refraction (174 eyes). The second and the third group embraced 63 patients with keratoconus: 36 patients (36 eyes) with keratoconus of the I degree and 27 eyes with keratoconus of the II and III degrees. Besides the conventional comprehensive ocular examination the following studies were performed in all the patients: evaluation of topographic, tomographic and biomechanical corneal properties with application of Pentacam HR and Corvis ST (OCULUS Optikgerate GmbH; Wetzlar, Germany). Results. It was revealed that the following biomechanical values, assessed by means of Pentacam HR and Corvis ST, exhibited statistically significant changes (p<0,001) in all degrees of ketatoconus: a relative corneal thickness by Ambrosio, inverted radius of applanation curvature (IntRadius), DA Ratio Coefficient, values of corneal rigidity – SP-A 1 and SSI. Conclusion. The detected parameters may be applied as indicators, allowing to evaluate corneal biomechanics, to define early features of ectatic process, to assess effectiveness of the performed corneal collagen crosslinking and intralamellar keratoplasty with implantation of corneal segments. Key words: keratoconus, corneal biomechanics, pachymetry, index of pachymetric progression, corneal viscoelasticity.

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