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Mehrdad Mohammadpour, Zahra Heidari, Hossein Mohammad-Rabei, Ebrahim Jafarzadehpur, Mahmoud Jabbarvand, Hassan Hashemi, Mehdi Khabazkhoob
PURPOSE: To evaluate the correlation between refractive, corneal, and residual astigmatism and higher order aberrations (HOA) in refractive surgery candidates. METHODS: Three hundred and seventy-five eyes of 188 patients aged 28.2 ± 6.24 years with a predominance of females (62.7%) were enrolled in this study. Refraction, topography (Orbscan IIz, Bausch & Lomb, Rochester, NY, USA), and aberrometry (Zywave, Bausch & Lomb, Rochester, NY, USA) were performed to determine refractive and corneal astigmatism and HOA for all participants...
September 2016: Journal of Current Ophthalmology
Hassan Hashemi, Mehdi Khabazkhoob, Ebrahim Jafarzadehpur, Abbasali Yekta, Mohammad Hassan Emamian, Mohammad Shariati, Akbar Fotouhi
PURPOSE: To determine the distribution of Zernike coefficients and higher order aberrations in a normal population and its relationship with age, gender, biometric components, and spherical equivalent. METHODS: During the first phase of the Shahroud cohort study, 6311 people of the 40-64-year-old population of Shahroud city were selected through random cluster sampling. A subsample of participants was examined with Zywave aberrometer (The Bausch & Lomb, Rochester, NY) to measure aberrations...
September 2015: Journal of Current Ophthalmology
Florian T A Kretz, Tamer Tandogan, Ramin Khoramnia, Gerd U Auffarth
AIM: To evaluate the quality of vision in respect to high order aberrations and straylight perception after implantation of an aspheric, aberration correcting, monofocal intraocular lens (IOL). METHODS: Twenty-one patients (34 eyes) aged 50 to 83y underwent cataract surgery with implantation of an aspheric, aberration correcting IOL (Tecnis ZCB00, Abbott Medical Optics). Three months after surgery they were examined for uncorrected (UDVA) and corrected distance visual acuity (CDVA), contrast sensitivity (CS) under photopic and mesopic conditions with and without glare source, ocular high order aberrations (HOA, Zywave II) and retinal straylight (C-Quant)...
2015: International Journal of Ophthalmology
Dhivya Ashok Kumar, Amar Agarwal Ms, Gaurav Prakash, Neha Vajpayee Boptm, Sathiya Packiyalakshmi, Athiya Agarwal
To analyse the effect of congenital unilateral ptosis on the ocular higher order aberrations (HOA) and to compare these eyes with normal fellow eyes this study has been performed. In this observational comparative case series, 16 eyes of 16 patients less than 15 years old with congenital unilateral upper eyelid ptosis were included. Corrected distance visual acuity (CDVA), corneal topography, ocular HOA's with Zywave workstation was recorded. The amount of ptosis was measured from marginal reflex distance (MRD1)...
2013: Medical Hypothesis, Discovery and Innovation in Ophthalmology
Seyhan Yazar, Alex W Hewitt, Hannah Forward, Charlotte M McKnight, Alex Tan, Jenny A Mountain, David A Mackey
PURPOSE: To compare the monochromatic aberrations in a large cohort of 20-year-old Australians with differing levels of visual acuity and explore the relationship between these aberrations and refractive error. SETTING: Lions Eye Institute, Perth, Western Australia, Australia. DESIGN: Cross-sectional analysis of a population-based cohort. METHODS: Monochromatic aberrations were measured using a Zywave II wavefront aberrometer with natural pupils in a dark room...
March 2014: Journal of Cataract and Refractive Surgery
Amanda C Kingston, Ian G Cox
PURPOSE: The aim of this analysis was to determine the total ocular wavefront aberration values of a large phakic population of physiologically normal, ametropic eyes, gathered under the same clinical protocol using the same diagnostic wavefront sensor. MATERIALS AND METHODS: Studies were conducted at multiple sites in Asia, North America, Europe, and Australia. A Bausch + Lomb Zywave II Wavefront Aberrometer (Rochester, NY, USA) was used to measure the lower and higher order aberrations of each eye...
2013: Clinical Ophthalmology
Qi Tan, Ming Zhang, Long-Qian Liu
OBJECTIVE: To evaluate changes in higher-order aberrations of eyes in patients with unilateral neovascular age-related macular degeneration (nAMD). METHODS: Thirty two patients with unilateral nAMD were recruited for this study. Biocular higher-order wavefront aberrations for a 6-mm pupil were measured with Zywave II aberrometer (Bausch & Lomb, Zyoptix, USA). The root mean square (RMS) of Zernike coefficients were compared between the eyes with nAMD and the fellow eyes...
January 2013: Sichuan da Xue Xue Bao. Yi Xue Ban, Journal of Sichuan University. Medical Science Edition
Fabiano Cade, Andrea Cruzat, Eleftherios I Paschalis, Lilian Espírito Santo, Roberto Pineda
PURPOSE: To compare the measurements of lower and higher order aberrations (HOA) of 4 commonly used aberrometers. SETTING: Massachusetts Eye & Ear Infirmary, Boston, USA. DESIGN: Prospective, cross-sectional study, in a controlled, single-blinded fashion. METHODS: Multiple readings were obtained in 42 eyes of 21 healthy volunteers, at a single visit, with each of the following aberrometers: Alcon LADARWave®, Visx WaveScan®, B & L Zywave®, and Wavelight Allegro Analyzer®...
2013: PloS One
Ali A Sabermoghaddam, Siamak Zarei-Ghanavati, Mojtaba Abrishami
PURPOSE: The goal of this study was to compare higher-order aberrations before and after upper lid chalazion excision. METHODS: Fourteen eyes from 12 patients (8 females, mean age: 28.7 ± 2.7 years) with upper lid chalazion were enrolled in this prospective interventional case series. Chalazia were excised by standard transconjunctival vertical incision. Ocular aberrations were evaluated by aberrometry (ZyWave) before and 2 months after chalazion excision. RESULTS: Root mean square of total higher-order aberrations decreased from 0...
June 2013: Cornea
Alberto López-Miguel, Miguel José Maldonado, Arnaldo Belzunce, Jesús Barrio-Barrio, María Begoña Coco-Martín, Juan Carlos Nieto
PURPOSE: To assess the intrasession and intersession precision of higher-order aberrations (HOAs) measured using a commercial Hartmann-Shack wavefront sensor (Zywave; Bausch & Lomb) in refractive surgery candidates. DESIGN: Prospective, experimental study of a device. METHODS: To analyze intrasession repeatability, 1 experienced examiner measured 30 healthy eyes 5 times successively. To study intersession reproducibility, the same clinician obtained measurements from another 30 eyes in 2 consecutive sessions at the same time of day 1 week apart...
November 2012: American Journal of Ophthalmology
Seyed Javad Hashemian, Mohammad Soleimani, Alireza Foroutan, Mahmood Joshaghani, Mohammad Jafar Ghaempanah, Mohammad Ebrahim Jafari, Mehdi Yaseri
AIM: To study the distribution of ocular higher-order aberrations(HOAs) and mesopic pupil size in individuals screened for refractive surgery. METHODS: Ocular HOAs and mesopic pupil size were studied in 2 458 eyes of 1 240 patients with myopia, myopic astigmatism and compound myopic astigmatism and 215 eyes of 110 patients with hyperopia, hyperopic astigmatism and compound hyperopic astigmatism using the Zywave aberrometer (Busch& Lomb). All patients had correctable refractive errors without a history of refractive surgery or underlying diseases...
2012: International Journal of Ophthalmology
Farid Karimian, Sepehr Feizi, Azade Doozande
PURPOSE: To evaluate the correlation between refractive error and higher-order aberrations (HOAs) in patients with myopic astigmatism. METHODS: HOAs were measured using the Zywave II aberrometer over a 6 mm pupil. Correlations between HOAs and myopia, astigmatism, and age were analyzed. RESULTS: One hundred and twenty-six eyes of 63 subjects with mean age of 26.4±5.9 years were studied. Mean spherical equivalent refractive error and refractive astigmatism were -4...
January 2010: Journal of Ophthalmic & Vision Research
Ying-hui Shi, Li-ya Wang, Tian-bin Lü, Jian Qin
OBJECTIVE: To compare the wavefront characteristics of normal and keratoconus eyes with and without rigid gas-permeable contact lens (RGPCL), and to evaluate the visual quality in keratoconus eyes corrected by RGPCL. METHODS: Retrospective study. Higher order aberrations (HOAs) of 90 eyes in 56 keratoconus patients and 30 eyes of 17 subjects with refractive errors were quantified with a Bausch&Lomb Zywave Wavefront Analyzer. The keratoconus eyes were divided into mild (28 eyes), moderate (33 eyes) and severe (29 eyes) groups...
July 2011: [Zhonghua Yan Ke za Zhi] Chinese Journal of Ophthalmology
James McKelvie, Brian McArdle, Charles McGhee
PURPOSE: To characterize the influence of tilt angle, decentration, and pupil size on the higher-order aberration (HOA) profile of 3 aspheric intraocular lenses (IOLs) using a physical model eye. DESIGN: A 4-factor (model, pupil, angle, decentration) in vitro experimental design comparing 3 aspheric IOLs using a physical model eye. METHODS: Measurements of HOA were obtained using the Zywave aberrometer (Bausch & Lomb, Rochester, NY) and a purpose-built physical model eye...
September 2011: Ophthalmology
Suphi Taneri, Saskia Oehler, Dimitri T Azar
PURPOSE: To investigate a potential influence of mydriatic eye drops on wavefront sensing with the Zywave aberrometer (Technolas Perfect Vision) in terms of predicted phoropter refraction (PPR) and higher order aberrations (HOA). METHODS: In this prospective study, 200 myopic eyes were measured in miosis and pharmacologically induced mydriasis with an aberrometer and automated refraction. One hundred eyes were dilated with tropicamide 0.5%+phenylephrine 2.5% eye drops (tropicamide/phenylephrine group), and the remaining 100 eyes with tropicamide 0...
September 2011: Journal of Refractive Surgery
Siamak Zarei-Ghanavati, Touka Banaee, Mojtaba Abrishami, Ali Dehghani
BACKGROUND AND OBJECTIVE: wavefront analysis aims to measure aberrations in the eye, often before and after surgeries. The Hartmann-Shack instrument is an outgoing reflective aberrometer that uses a laser light source. The authors aimed to evaluate changes in aberrations of the eyes with macular irregularity by comparing with the fellow normal eyes. PATIENTS AND METHODS: in a prospective study, the authors evaluated both eyes of patients with unilateral acquired foveal lesion by ZyWave (ZyWave; Milwaukee, WI) aberrometer...
January 2011: Ophthalmic Surgery, Lasers & Imaging
John Landers, Michael Goggin
PURPOSE: recently, intraocular lenses (IOLs) that possess an aspheric design, compensating for the spherical aberration (SA) of the cornea, have been developed. We designed this study to compare a group of patients who had undergone bilateral cataract surgery and had received one spherical IOL and one aspheric IOL, to assess their ocular preference. METHODS: patients were recruited from those who had undergone bilateral cataract surgery during the preceding six months (32 patients)...
November 2010: Clinical & Experimental Optometry: Journal of the Australian Optometrical Association
Jae-Hyung Kim, Taehyung Lim, Hee Gyung Lee, Jae Yong Kim, Myoung Joon Kim, Hungwon Tchah
PURPOSE: To compare early postoperative pain and visual outcomes after conventional epithelial laser in situ keratomileusis and lamellar epithelial debridement (LED) procedures used to treat myopia. METHODS: Prospective bilateral comparison between conventional epithelial laser in situ keratomileusis, in which the epithelial flap was repositioned, and LED, in which the epithelial sheet was removed, was designed. Eighteen patients were included. The Amadeus II Epi-Keratome (Advanced Medical Optics, Santa Ana, CA) and the Zywave Z100 instrument (Bausch & Lomb, Rochester, NY) were used in both groups...
August 2010: Cornea
S Taneri, S Stottmeister, K Krause
BACKGROUND AND PURPOSE: Wavefront-guided ablations are based on wavefront sensing in a pupil dilated under mesopic conditions, or in patients with insufficient natural pupil dilation, after the application of mydriatic eye drops. The aim of this study was to investigate a potential influence of mydriatic eye drops on wavefront-sensing in terms of the predicted phoropter refraction (PPR). METHOD: In this prospective study 70 myopic eyes were measured in miosis and pharmacologically induced mydriasis with the Zywave aberrometer and automated refraction (Canon R-F10)...
January 2010: Klinische Monatsblätter Für Augenheilkunde
V Loukotová, E Vlková, M Horácková, E Tokosová, L Pirnerová, Z Hlinomazová, D Dvoráková, J Nĕmec
UNLABELLED: The aim of the prospective study was to evaluate higher order aberrations and contrast sensitivity after photorefractive keratectomy (PRK) using the standard photoablation profile. MATERIALS AND METHODS: The group consisted of 37 patients (69 eyes), the mean age 27.2 +/- 4.5 years, who underwent PRK with target emetropia during the period January 2007 -December 2007. In 19 cases, it was correction of myopia, in 50 cases myopia with astigmatism.The preoperative spherical equivalent was -3...
October 2009: Ceská a Slovenská Oftalmologie
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