Corneal aberrations in normal and keratoconic eyes using an OPD-Scan Ⅱ
Journal Title: Guoji Yanke Zazhi - Year 2018, Vol 18, Issue 4
Abstract
AIM: To evaluate higher order aberrations(HOAs)of the corneal surface in normal and keratoconic eyes.<p>METHODS: Using an OPD-Scan Ⅱ wavefront analyzer, aberrometric parameters of the corneal surface in one eye of 80 patients with keratoconus(KC)and 91 participants with normal eyes were evaluated. The Zernike coefficients from third- to sixth-order as well as root mean square(RMS)of primary coma, coma-like aberrations, and total HOA were calculated and compared between both groups.<p>RESULTS: Statistically significant differences were found in all aberrometric parameters between the measurements of the KC and normal participants(<i>P</i><0.001). All of the aberrometric parameters were significantly higher in the KC patients compared to the normal group(<i>P</i><0.001).<p>CONCLUSION: Corneal wavefront measurements by means of OPD-Scan Ⅱ were significantly higher in keratoconic corneas than normal corneas.
Authors and Affiliations
Mohammad Naderan
Keywords
Related Articles
- EP ID EP656031
- DOI 10.3980/j.issn.1672-5123.2018.4.01
- Views 118
- Downloads 0
A comparative study on the effect of fixation for guinea pigs eyeballs among three different fixation solution
AIM: To compare the effect of fixation and select the optimal fixation solution and condition for PAS staining of guinea pig eyes among three different fixation solution: 4% paraformaldehyde solution, 4% glutaraldehyde s...
Comparison of central corneal thickness measurements by PachPen ultrasonic pachymetry and the other two optical measuring instruments
AIM:To compare the similarities and differences of central corneal thickness(CCT)measured by different devices, so as to provide a safe, effective, simple and accurate method for measuring corneal thickness. <p>METHODS:...
Effects of different does intravitreous triamcinolone acetonide for macular edema secondary to retinal vein occlusion
AIM: To compare the clinical efficacy and complications of intravitreal injection of 1mg, 2mg and 4mg triamcinolone acetonide(TA)in the treatment of macular edema secondary to retinal vein occlusion, and to explore effec...
Effects of mitomycin C at different exposure time on the morphology of corneal endothelial cells in LASEK surgery
AIM: To investigate the effects of mitomycin C(MMC)on corneal endothelial cells at different exposure time during laser-assisted subepithelial keratomileusis(LASEK).<p>METHODS: Patients who received LASEK were included a...
Effects of scleral tunnel incision or clear corneal incision with same length of phacoemulsification
AIM: To explore the differences of clinical effects between 3.0mm scleral tunnel incision and 3.0mm clear corneal incision of phacoemulsification(Phaco). <p>METHODS: The clinical data of 114 patients with cataract(114 ey...