The contact lens and myopia progression study

2001 ◽  
Author(s):  
Jeffrey J. Walline ◽  
Donald O. Mutti ◽  
Karla Zadnik
Keyword(s):  
Contact Lens ◽  
Myopia Progression

scholarly journals Myopia Progression During Three Years of Soft Contact Lens Wear

2009 ◽  
Vol 86 (10) ◽  
pp. 1150-1153 ◽  
Author(s):  
Adam Blacker ◽  
G Lynn Mitchell ◽  
Mark A. Bullimore ◽  
Bill Long ◽  
Joseph T. Barr ◽  
...  
Keyword(s):  
Contact Lens ◽  
Soft Contact ◽  
Myopia Progression ◽  
Contact Lens Wear ◽  
Soft Contact Lens ◽  
Lens Wear

The Contact Lens and Myopia Progression (CLAMP) Study: Design and Baseline Data

2001 ◽  
Vol 78 (4) ◽  
pp. 223-233 ◽  
Author(s):  
Jeffrey J. Walline ◽  
Donald O. Mutti ◽  
Lisa A. Jones ◽  
Marjorie J. Rah ◽  
Kelly K. Nichols ◽  
...  
Keyword(s):  
Study Design ◽  
Contact Lens ◽  
Baseline Data ◽  
Myopia Progression ◽  
Clamp Study

scholarly journals Effect of Peripheral Defocus on Axial Eye Growth and Modulation of Refractive Error in Hyperopes: Protocol for a Nonrandomized Clinical Trial (Preprint)

2018 ◽  
Author(s):  
Ian G Beasley ◽  
Leon N Davies ◽  
Nicola S Logan
Keyword(s):  
Refractive Error ◽  
Contact Lens ◽  
Animal Studies ◽  
Contact Lenses ◽  
Myopia Progression ◽  
Fellow Eye ◽  
Eye Growth ◽  
Single Vision ◽  
Natural Progression ◽  
Control Study

BACKGROUND Hyperopia occurs due to insufficient ocular growth and a failure to emmetropize in childhood. In anisohyperopia, it is unclear why one eye may remain hyperopic while the fellow eye grows toward an emmetropic state. Animal studies have shown that manipulating peripheral defocus through optical means while simultaneously providing correct axial focus can either discourage or encourage axial eye growth to effectively treat myopia or hyperopia, respectively. Myopia progression and axial eye growth can be significantly reduced in children and adolescents through the use of multifocal contact lenses. These contact lenses correct distance central myopia while simultaneously imposing relative peripheral myopic defocus. The effect of correcting distance central hyperopia while simultaneously imposing relative peripheral hyperopic defocus is yet to be elucidated in humans. OBJECTIVE The objective of our study is to understand the natural progression of axial eye growth and refractive error in hyperopes and anisohyperopes and to establish whether axial eye growth and refractive error can be modified using multifocal contact lenses in hyperopes and anisohyperopes. METHODS There are 3 elements to the program of research. First, the natural progression of axial eye growth and refractive error will be measured in spectacle-wearing hyperopic and anisohyperopic subjects aged between 5 and <20 years. In other words, the natural growth of the eye will be followed without any intervention. Second, as a paired-eye control study, anisohyperopes aged between 8 and <16 years will be fitted with a center-near multifocal design contact lens in their more hyperopic eye and a single-vision contact lens in the fellow eye if required. The progression of axial eye growth and refractive error will be measured and compared. Third, subjects aged between 8 and <16 years with similar levels of hyperopia in each eye will be fitted with center-near multifocal design contact lenses in each eye; the progression of axial eye growth and refractive error in these subjects will be measured and compared with those of subjects in the natural progression study. RESULTS Recruitment commenced on 6 June 2016 and was completed on 8 April 2017. We estimate the data collection to be completed by April 2020. CONCLUSIONS This trial will establish whether axial eye growth can be accelerated in children with hyperopia by imposing relative peripheral hyperopic defocus using center-near multifocal contact lenses. CLINICALTRIAL ClinicalTrials.gov NCT02686879; https://clinicaltrials.gov/ct2/show/NCT02686879 (Archived by Webcite at http://www.webcitation.org/71o5p3fD2) REGISTERED REPORT IDENTIFIER RR1-10.2196/9320

scholarly journals Infectious Keratitis Associated with Contact Lenses

2021 ◽  
Vol 20 (4) ◽  
pp. 140-143
Author(s):  
Kyong Jin Cho
Keyword(s):  
Patient Education ◽  
Contact Lens ◽  
Contact Lenses ◽  
Infectious Keratitis ◽  
Corneal Surface ◽  
Corneal Epithelial Cells ◽  
Myopia Progression ◽  
Corneal Epithelial ◽  
Corneal Infection ◽  
Tear Flow

The use of contact lenses for correcting refraction, suppressing myopia progression, and cosmetic purposes is increasing steadily. Contact lenses have various effects on the corneal surface and corneal infection can occur following obstruction of tear flow, micro-damage to corneal epithelial cells, corneal hypoxia, changes in corneal immunity, and exposure to contaminants. When a patient who used to wear contact lenses presents with keratitis, it is important to distinguish whether it is an infection; if it is an infection, it is important to find the causative strain and promptly treat it appropriately. Since improper lens care is related to infection, appropriate patient education is necessary, and the risk of contact lens infection should be reduced through regular ophthalmic examinations.

Vision Performance With a Contact Lens Designed to Slow Myopia Progression

2013 ◽  
Vol 90 (3) ◽  
pp. 205-214 ◽  
Author(s):  
Pete S. Kollbaum ◽  
Meredith E. Jansen ◽  
Jacqueline Tan ◽  
Dawn M. Meyer ◽  
Martin E. Rickert
Keyword(s):  
Contact Lens ◽  
Myopia Progression

Contact Lens Correction and Myopia Progression

2019 ◽  
pp. 497-506
Author(s):  
Nicola S. Logan ◽  
Bernard Gilmartin ◽  
Pauline Cho
Keyword(s):  
Contact Lens ◽  
Myopia Progression
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