EurekaMag
+ Translate
+ Most Popular
Cunninghamia lanceolata plantations in China
Mammalian lairs in paleo ecological studies and palynology
Studies on technological possibilities in utilization of anhydrous milk fat for production of recombined butter-like products
Should right-sided fibroelastomas be operated upon?
Large esophageal lipoma
Apoptosis in the mammalian thymus during normal histogenesis and under various in vitro and in vivo experimental conditions
Poissons characoides nouveaux ou non signales de l'Ilha do Bananal, Bresil
Desensitizing efficacy of Colgate Sensitive Maximum Strength and Fresh Mint Sensodyne dentifrices
Administration of fluid by subcutaneous infusion: revival of a forgotten method
Tundra mosquito control - an impossible dream?
Schizophrenia for primary care providers: how to contribute to the care of a vulnerable patient population
Geochemical pattern analysis; method of describing the Southeastern limestone regional aquifer system
Incidence of low birth weights in a hospital of Mexico City
Tabanidae
Graded management intensity of grassland systems for enhancing floristic diversity
Microbiology and biochemistry of cheese and fermented milk
The ember tetra: a new pygmy characid tetra from the Rio das Mortes, Brazil, Hyphessobrycon amandae sp. n. (Pisces, Characoidei)
Risk factors of contrast-induced nephropathy in patients after coronary artery intervention
Renovation of onsite domestic wastewater in a poorly drained soil
Observations of the propagation velocity and formation mechanism of burst fractures caused by gunshot
Systolic blood pressure in a population of infants in the first year of life: the Brompton study
Haematological studies in rats fed with metanil yellow
Studies on pasteurellosis. I. A new species of Pasteurella encountered in chronic fowl cholera
Dormancy breaking and germination of Acacia salicina Lindl. seeds
therapy of lupus nephritis. a two-year prospective study

Relationship between contrast sensitivity and corneal shape following overnight orthokeratology


Relationship between contrast sensitivity and corneal shape following overnight orthokeratology



International Journal of Ophthalmology 12(2): 275-279



ISSN/ISBN: 2222-3959

PMID: 30809484

DOI: 10.18240/ijo.2019.02.14

To evaluate the relationship between contrast sensitivity (CS) and corneal shape following overnight orthokeratology (OK). We conducted a retrospective clinical study of 80 lens-wearing myopia patients, all of whom had undergone OK and had been evaluated by Orbscan II topography. We measured the surface irregularity index (SIRI) of corneal topography at 3 and 5 mm, the size of the flattened central corneal curvature of OK lens (zone A), the size of the cornea altered by OK lens (zone B), the size of the pupillary area at the corneal level (zone C), the area of crossover between zones A and C (zone AC), the area of crossover between zones B and C (BC), the ratio of BC to B (BC/B), and the ratio of AC to C (AC/C). CS was evaluated using the CSV-1000 with spatial frequencies of 3, 6, 12, and 18 cycles/degree (CPD). Multiple correlation analyses indicated significant negative correlations between CS, zone C, BC/B, and 3-mm SIRI (all P<0.01). There were no significant differences between CS, zone B, AC/A, or 5-mm SIRI (P=0.60, 0.94 and 0.11, respectively). Zone C was negatively correlated with 3, 6, 12, and 18 CPD. 5-mm SIRI were negatively correlated with 6, 12, and 18 CPD. BC/C was negatively correlated with 6 and 18 CPD. AC/C was positively correlated with 3 CPD. Zone C, 3-mm SIRI and BC/B affect the CS following overnight OK.

Please choose payment method:






(PDF emailed within 0-6 h: $19.90)

Accession: 066535270

Download citation: RISBibTeXText

Related references

Recovery of corneal irregular astigmatism, ocular higher-order aberrations, and contrast sensitivity after discontinuation of overnight orthokeratology. British Journal of Ophthalmology 93(2): 203-208, 2009

Posterior corneal shape changes in myopic overnight orthokeratology. Optometry and Vision Science: Official Publication of the American Academy of Optometry 90(3): 196-204, 2013

Short-Term Effects of Overnight Orthokeratology on Corneal Sub-basal Nerve Plexus Morphology and Corneal Sensitivity. Eye and Contact Lens 44(2): 77-84, 2018

Influence of Overnight Orthokeratology on Corneal Surface Shape and Optical Quality. Journal of Ophthalmology 2017: 3279821, 2017

Effect of Overnight Wear Orthokeratology Lenses on Corneal Shape and Tears. Eye and Contact Lens 44(5): 304-307, 2018

Short-Term Effects of Overnight Orthokeratology on Corneal Sensitivity in Chinese Children and Adolescents. Journal of Ophthalmology 2018: 6185919, 2018

Contrast sensitivity function and ocular higher-order aberrations following overnight orthokeratology. IOVS Investigative Ophthalmology and Visual Science 48(2): 550-556, 2007

Mesopic contrast sensitivity and ocular higher-order aberrations after overnight orthokeratology. American Journal of Ophthalmology 145(4): 645-655, 2008

Time course of changes in ocular higher-order aberrations and contrast sensitivity after overnight orthokeratology. Investigative Ophthalmology and Visual Science 49(10): 4314-4320, 2008

Relationship between corneal topographical changes and subjective myopic reduction in overnight orthokeratology: a retrospective study. Clinical and Experimental Optometry 93(4): 237-242, 2010

Short-term effects of overnight orthokeratology on corneal cell morphology and corneal thickness. Cornea 30(6): 646-654, 2011

Corneal Aberrations, Contrast Sensitivity, and Light Distortion in Orthokeratology Patients: 1-Year Results. Journal of Ophthalmology 2016: 8453462, 2016

Long-term follow-up of orthokeratology corneal reshaping using wavefront aberrometry and contrast sensitivity. Eye and Contact Lens 34(3): 140-145, 2008

Overnight orthokeratology: preliminary results of the Lenses and Overnight Orthokeratology (LOOK) study. Optometry and Vision Science: Official Publication of the American Academy of Optometry 79(9): 598-605, 2002

Reversibility of effects of orthokeratology on visual acuity, refractive error, corneal topography, and contrast sensitivity. Eye and Contact Lens 34(4): 224-228, 2008