Functional vision and corneal changes after laser in situ keratomileusis determined by contrast sensitivity, glare testing, and corneal topography

Holladay, Jack T.; Dudeja, Deep R.; Chang, Jongwha

doi:10.1016/s0886-3350(99)00011-5

Cited by 278 publications

(149 citation statements)

References 13 publications

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“…However, the range of safe dioptric correction for these procedures has been progressively narrowed as a consequence of the mid and long-term complications observed, particularly in cases of high refractive error, such as keratectasia, 1 corneal haze, 2 regression, 3 dry eye, 4 or poor postoperative visual quality. 5,6 It has been shown that photoablative refractive surgery in high ametropia can lead to a significant increase in ocular aberrations 5 and decrease in visual performance. 6 Furthermore, corneal photoablation has a decreased predictability for the correction of high refractive error because of the unknown and unpredictable effects on corneal biomechanics.…”

Section: Introductionmentioning

confidence: 99%

“…5,6 It has been shown that photoablative refractive surgery in high ametropia can lead to a significant increase in ocular aberrations 5 and decrease in visual performance. 6 Furthermore, corneal photoablation has a decreased predictability for the correction of high refractive error because of the unknown and unpredictable effects on corneal biomechanics. 7 Intraocular refractive procedures have become a safe, efficient and predictable alternative for treating high ametropias when the use of corneal photoablative procedures is not possible or high risk.…”

Section: Introductionmentioning

confidence: 99%

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The posterior chamber phakic refractive lens (PRL): a review

Pérez-Cambrodí

Piñero

Ferrer-Blasco

et al. 2012

Eye

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Implantation of phakic intraocular lenses (pIOLs) is a reversible refractive procedure, preserving the patient's accommodative function with minimal induction of higher order aberrations compared with corneal photoablative procedures. Despite this, as an intraocular procedure, it has potential risks such as cataracts, chronic uveitis, pupil ovalization, corneal endothelial cell loss, pigmentary dispersion syndrome, pupillary block glaucoma, astigmatism, or endophthalmitis. Currently, only two models of posterior chamber pIOLs are commercially available, the implantable collammer lens (STAAR Surgical Co.) and the phakic refractive lens (PRL; Zeiss Meditec). The number of published reports on the latter is very low, and some concerns still remain about its long-term safety. The present article reviews the published literature on the outcomes after PRL implantation in order to provide a general overview and evaluate its real potential as a surgical refractive option.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

The posterior chamber phakic refractive lens (PRL): a review

Pérez-Cambrodí

Piñero

Ferrer-Blasco

et al. 2012

Eye

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“…For the first three to six months, the patient intermittently experienced symptoms of dry eyes (Low 2012), fluctuation and; clarity of vision. However, these did not affect her functional daily task and the slight glare and haloes, which were a part of the healing process in corneal refractive surgery (Holladay 1999). The usage of artificial tears gave a smoother ocular surface, thus making the patient feeling more comfortable and having a clearer vision.…”

Section: Discussionmentioning

confidence: 96%

Vision Status: Presbyopic Patient Undergone Corneal Inlay Procedure

Gnanasundram

Omar

Ishak

et al. 2016

JSKM

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“…Holladay et al (15) published a study showing that large pupil patients suffered from visual disturbance and degradation, the optic of the cornea leading to decrease in contrast sensitivity after LASIK. Halos and false images after PRK occur more often at night in young myopic patients with greater pupillary diameters.…”

Section: Discussionmentioning

confidence: 99%

Reasons not to select patients for corneal refractive surgery

Ribeiro¹,

Schor²,

Allemann³

et al. 2002

Arq. Bras. Oftalmol.

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Purpose: To present how the section of Refractive Surgery of the Federal University of São Paulo assesses the candidates and the reasons to indicate for corneal refractive surgery. Methods: We examined 1626 patients. Anamnesis, complete ophthalmologic examination and corneal topography were performed in all patients. The patients spontaneously seeked evaluation at the Refractive Surgery Section by telephone without a previous screening. Reasons to refuse patients for refractive surgery were previously established by the Refractive Surgery Section. Results: Based on current technology and clinical experience, 265 patients (16.29%) were refused for excimer laser corneal refractive surgery. Myopia of patients who had insufficient preoperative corneal pachymetry for the laser treatment was the main cause for refusal (51 patients). Cataract (45 patients), keratoconus (31 patients), amblyopia (21 patients), hyperopia > 5 diopters and mixed astigmatism (19 patients), presbyopia (unaware ness of the need for optical correction after the procedure; 16 patients), pupillary diameter > 5mm (9 patients), single eye (9 patients), progressive myopia (8 patients), postradial keratotomy (7 patients) and low ametropia (7 patients) were among the reasons for the refusal. Conclusion: Candidates for excimer laser corneal refractive surgery may present risk factors that should be known in order to avoid complications. Since the 80's, laser light has been studied as a tool for the correction of ametropias. At present, the argon fluoride excimer laser (193 nm) is used for the corneal curvature in an effective, safe and stable way (1) . There are two major procedures for laser application to the cornea: photorrefractive keratectomy (PRK) and lamellar photorrefractive keratectomy (LASIK). In PRK, the corneal epithelium is removed and laser is applied to the superficial corneal stroma. In the LASIK technique, a corneal flap is made with a microkeratome and the laser is applied to the underlying stroma. The choice between the techniques depends on the surgeon's experience and the ametropia to be treated. Razões para recusar candidatos à cirurgia refrativa corneanaWith the widespread use of excimer laser for correction of ametropias, it is important to select candidates who may benefit from the surgery and, mainly, not to operate in cases where expectancy of results has shown a poor correlation with the clinically obtained results.Refractive surgery is and should be treated as an elective option instead of spectacles or contact lens wearing, which are clinical methods with less, although present, risks (2) .Regarding safety, complications of the surgical method which lead to Keywords: Refractive errors/surgery; Cornea/surgery; Myopia; Corneal topography; KeratoconusReasons not to select patients for corneal refractive surgery

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Functional vision and corneal changes after laser in situ keratomileusis determined by contrast sensitivity, glare testing, and corneal topography

Cited by 278 publications

References 13 publications

The posterior chamber phakic refractive lens (PRL): a review

The posterior chamber phakic refractive lens (PRL): a review

Vision Status: Presbyopic Patient Undergone Corneal Inlay Procedure

Reasons not to select patients for corneal refractive surgery

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