Abstract：
PURPOSE:To objectively evaluate the image quality obtained with toric intraocular lenses (IOLs) when misaligned from the intended axis. SETTING:University Eye Clinic and the Department of Industrial and Information Engineering, University of Trieste, Trieste, Italy. DESIGN:Experimental study. METHODS:An experimental optoelectronic test bench was created. It consisted of a high-resolution monitor to project target images and an artificial eye. The system simulates the optical and geometric characteristics of the human eye with an implanted toric IOL. A 3.00 diopters corneal astigmatism was simulated. Images reproduced by the optical system were captured according to different IOL axis positions. The quality of each image was analyzed using the visual information fidelity (VIF) criterion. The VIF reduction was calculated at each IOL rotational step. RESULTS:A 5-degree IOL axis rotation from the intended position determined a decay in the image quality of 7.03%. Ten degrees of IOL rotation caused an 11.09% decay of relative VIF value. For a 30-degree rotation, the VIF decay value was 45.85%. Finally, the image decay with no toric correction was 56.70%. CONCLUSIONS:The more the objective quality of the image decays progressively, the further the axis of the IOL is rotated from its intended position. The reduction in image quality obtained after 30 degrees of toric IOL rotation was less than 50% and after 45 degrees, the image quality was the same as that of no toric correction.
journal_name
J Cataract Refract Surgjournal_title
Journal of cataract and refractive surgeryauthors
Tognetto D,Perrotta AA,Bauci F,Rinaldi S,Antonuccio M,Pellegrino FA,Fenu G,Stamatelatos G,Alpins Ndoi
10.1016/j.jcrs.2017.10.053subject
Has Abstractpub_date
2018-03-01 00:00:00pages
376-381issue
3eissn
0886-3350issn
1873-4502pii
S0886-3350(18)30173-1journal_volume
44pub_type
杂志文章abstract：:We report a case of bacterial keratitis that occurred after implantation of intrastromal corneal ring segments (Intacs). The patient presented with decreased vision, inflammation, and stromal infiltrates localized at the extremity of an Intacs channel 3 months after surgery. Culture were positive for Clostridium perfr...
journal_title：Journal of cataract and refractive surgery
pub_type： 杂志文章
doi：10.1016/s0886-3350(02)01484-0
更新日期：2003-02-01 00:00:00
abstract：:We used power modulations in addition to new technology available from 6 phacoemulsification manufacturers and altered our phacoemulsification techniques to take advantage of these technologies to significantly reduce the amount of ultrasound energy placed into the eye and enhance the rapidity and level of visual reha...
journal_title：Journal of cataract and refractive surgery
pub_type： 杂志文章
doi：10.1016/s0886-3350(00)00834-8
更新日期：2001-02-01 00:00:00
abstract：:Nonsteroidal anti-inflammatory drugs (NSAIDs) produce potent analgesic, antipyretic, and anti-inflammatory effects. We studied postoperative pain in 97 consecutive patients having photorefractive keratectomy (PRK) by an excimer laser with different topical NSAID protocols. Treatment with topical homatropine hydrobromi...
journal_title：Journal of cataract and refractive surgery
pub_type： 杂志文章
doi：10.1016/s0886-3350(13)80756-0
更新日期：1994-03-01 00:00:00
abstract：PURPOSE:To evaluate the long-term effects of extraction of incipient cataracts or clear lenses on glaucoma control in patients with subacute or chronic angle-closure glaucoma. SETTING:Department of Ophthalmology, University of Amsterdam, The Netherlands. METHODS:This retrospective analysis comprised 22 extracapsular ...
journal_title：Journal of cataract and refractive surgery
pub_type： 杂志文章
doi：10.1016/s0886-3350(98)80227-7
更新日期：1998-10-01 00:00:00
abstract：PURPOSE:To evaluate negative dysphotopsia in the far periphery of the pseudophakic eye by generating simulated images of text charts. SETTING:Consultancy. DESIGN:Laboratory study. METHODS:Simulated images of a peripheral text chart were created using a ray-trace model of a pseudophakic eye. The point spread function...
journal_title：Journal of cataract and refractive surgery
pub_type： 杂志文章
doi：10.1097/j.jcrs.0000000000000103
更新日期：2020-03-01 00:00:00
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journal_title：Journal of cataract and refractive surgery
pub_type： 临床试验,杂志文章
doi：10.1016/s0886-3350(99)00071-1
更新日期：1999-07-01 00:00:00
abstract：:A 22-year-old woman presented with pain, redness, watering, and decrease in vision in her left eye 15 days after laser in situ keratomileusis for myopia. Slitlamp examination showed a central full-thickness infiltrate with hyphate edges. Microscopic examination of corneal scrapings from the edge and underneath the fla...
journal_title：Journal of cataract and refractive surgery
pub_type： 杂志文章
doi：10.1016/s0886-3350(99)00459-9
更新日期：2000-04-01 00:00:00
abstract：:We report a case of bacterial keratitis that occurred after laser-assisted subepithelial keratectomy. The patient presented with a decrease in visual acuity and pain 2 days after the procedure. Culture was positive for Staphylococcus haemolyticus. The infiltrate slowly resolved with topical antibiotics, and the best c...
journal_title：Journal of cataract and refractive surgery
pub_type： 杂志文章
doi：10.1016/j.jcrs.2004.04.062
更新日期：2004-12-01 00:00:00
abstract：PURPOSE:To evaluate morphological characteristics and intraoperative dynamics of posterior polar cataract (PPC) using intraoperative optical coherence tomography (iOCT). SETTING:Rajendra Prasad Center for Ophthalmic Sciences, All India Institute of Medical Sciences, New Delhi, India. DESIGN:Prospective interventional...
journal_title：Journal of cataract and refractive surgery
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doi：10.1097/j.jcrs.0000000000000256
更新日期：2020-09-01 00:00:00
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journal_title：Journal of cataract and refractive surgery
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doi：10.1016/j.jcrs.2009.07.011
更新日期：2010-01-01 00:00:00
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journal_title：Journal of cataract and refractive surgery
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journal_title：Journal of cataract and refractive surgery
pub_type： 临床试验,杂志文章,多中心研究
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更新日期：1994-11-01 00:00:00
abstract：PURPOSE:To compare the efficacy of epithelium-off corneal collagen crosslinking (CXL) with transepithelial CXL in patients with progressive keratoconus. SETTING:Department of Ophthalmology, Marmara University School of Medicine, Istanbul, Turkey. DESIGN:Retrospective cohort study. METHODS:Eyes that had transepitheli...
journal_title：Journal of cataract and refractive surgery
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doi：10.1016/j.jcrs.2014.10.041
更新日期：2015-07-01 00:00:00
abstract：PURPOSE:To establish whether small incision cataract surgery with phacoemulsification decreases the risk of acute suprachoroidal hemorrhage (ASCH) compared with traditional nucleus expression by extracapsular cataract extraction (ECCE). SETTING:St. Erik Eye Hospital, Stockholm, Sweden. METHODS:A retrospective study w...
journal_title：Journal of cataract and refractive surgery
pub_type： 杂志文章
doi：10.1016/s0886-3350(98)80133-8
更新日期：1998-06-01 00:00:00
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journal_title：Journal of cataract and refractive surgery
pub_type： 杂志文章
doi：10.1016/j.jcrs.2006.07.038
更新日期：2007-01-01 00:00:00
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journal_title：Journal of cataract and refractive surgery
pub_type： 杂志文章
doi：10.1016/s0886-3350(00)00886-5
更新日期：2001-07-01 00:00:00
abstract：PURPOSE:To quantify the cyclorotation occurring between wavefront measurement and laser refractive surgery. SETTING:LaserVue Eye Center Ophthalmic Clinic, Santa Rosa, California, USA. METHODS:The pupil camera of the Visx WaveScan wavefront device was used to obtain images of 51 eyes (26 patients) from 5 to 20 minutes...
journal_title：Journal of cataract and refractive surgery
pub_type： 杂志文章
doi：10.1016/j.jcrs.2003.08.022
更新日期：2004-03-01 00:00:00
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更新日期：2001-07-01 00:00:00
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更新日期：2012-05-01 00:00:00
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journal_title：Journal of cataract and refractive surgery
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更新日期：2016-05-01 00:00:00
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journal_title：Journal of cataract and refractive surgery
pub_type： 临床试验,杂志文章,随机对照试验
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更新日期：1997-03-01 00:00:00
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journal_title：Journal of cataract and refractive surgery
pub_type： 临床试验,杂志文章,随机对照试验
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更新日期：1993-01-01 00:00:00
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journal_title：Journal of cataract and refractive surgery
pub_type： 杂志文章
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更新日期：2020-03-01 00:00:00
abstract：:A poly(methyl methacrylate)(PMMA) intraocular lens (IOL) dislocated into the vitreous cavity in 2 patients after a neodymium:YAG (Nd:YAG) laser posterior capsulotomy. In Case 1, the capsulotomy was performed 19 months after extracapsular cataract extraction (ECCE) and sulcus fixation of an IOL. Six months later the IO...
journal_title：Journal of cataract and refractive surgery
pub_type： 杂志文章
doi：10.1016/s0886-3350(98)80182-x
更新日期：1998-11-01 00:00:00
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journal_title：Journal of cataract and refractive surgery
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更新日期：2015-04-01 00:00:00
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journal_title：Journal of cataract and refractive surgery
pub_type： 杂志文章
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更新日期：2003-09-01 00:00:00
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journal_title：Journal of cataract and refractive surgery
pub_type： 杂志文章
doi：10.1016/j.jcrs.2011.02.025
更新日期：2011-08-01 00:00:00
abstract：:We report the case of a 54-year-old man who attended our emergency department complaining of severe floaters and decreased vision in his right eye. Seven days earlier, a dexamethasone intravitreal implant (Oxurdex) had been placed for a noninfectious posterior uveitis. Slitlamp examination showed the implant had penet...
journal_title：Journal of cataract and refractive surgery
pub_type： 杂志文章
doi：10.1016/j.jcrs.2013.06.003
更新日期：2013-08-01 00:00:00
abstract：PURPOSE:To compare the spatial resolution threshold in the central visual field of pseudophakic patients with monofocal and multifocal intraocular lenses (IOLs). SETTING:Eye Clinic, University of Trieste, Italy. METHODS:Twenty phakic normal subjects and four groups of 20 pseudophakic patients each, implanted with ref...
journal_title：Journal of cataract and refractive surgery
pub_type： 杂志文章
doi：10.1016/s0886-3350(98)80206-x
更新日期：1998-02-01 00:00:00
