In modern cataract surgery, the precision by which the target refraction is achieved still remains unsatisfactory in many cases. Potential reasons include interindividual differences in wound healing, a postoperative shift of the anatomical position of the lens or previous refractive laser surgery. A system that allows for postoperative adjustment of target refraction would be highly beneficial. The light-adjustable lens (LAL, Calhoun Vision, Inc., Pasadena, CA) potentially represents such a system where

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Conclusion Corneal spherical aberration and Z64 increased with corresponding increases in the internal spherical aberration and Z64 following LASIK. This may be an active compensatory mechanism of the internal optics to change, in order to reduce the effect of induced corneal HOA. Content Type Journal ArticleCategory Refractive SurgeryDOI 10.1007/s00417-010-1459-xAuthors Colm McAlinden, University of Ulster School of Biomedical Sciences Cromore Road Coleraine BT52 1SA UKJo

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Photorefractive keratectomy, laser epithelial keratomileusis (LASEK) and Epi-LASIK are all variants of a similar type refractive surgery involving laser on the surface of the cornea and differ mainly in management of the epithelium. Although laser in situ keratomileusis (LASIK) is currently the most popular form of refractive surgery, LASEK is the procedure of choice in some patients. We highlight potential complications of LASEK and how these may be managed. Following laser refractive surgery, corneal th

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In the consultation section of the January issue, the refractive surgical problem involved a patient who was operated on for a pterygium but the surgeon did not know that laser in situ keratomileusis (LASIK) had been performed 10 years previously. The LASIK flap was excised during surgery, and irregular astigmatism and corneal scarring developed. The patient's visual acuity deteriorated to 20/100. (Source: Journal of Cataract and Refractive Surgery)

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Conclusion: There was a greater decrease in IOP measurement after LASIK by rebound tonometry, showing this method was more affected by surgery.Financial Disclosure: No author has a financial or proprietary interest in any material or method mentioned. (Source: Journal of Cataract and Refractive Surgery)

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Before opting for laser eye surgery, you need to make sure you know what the procedure will entail and how it will work for you, writes FIONA REDDAN (Source: The Irish Times - Health)

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Dr. Angela Nahl of La Jolla LASIK Institute recently became the first San Diego LASIK surgeon to perform refractive surgery on a patient using the new Ziemer Z-LASIK technology. The patient, who happens to be a physician, reported only minor discomfort and tested with 20/20 vision following the ten minute procedure. During LASIK, the surgeon cuts a flap in the patient's cornea, performs laser treatment and replaces the flap. Over the last eight years, the quality of results and speed of healing have been

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The May issue of Ophthalmology, the journal of the American Academy of Ophthalmology, includes a surprising, first report on increasing rates of age-related macular degeneration (AMD) among Asians, and describes an innovative "bypass" laser surgery that may help many people with central retinal vein occlusion (CRVO) avoid serious vision loss. Are Asians as Vulnerable to AMD as Caucasians? A major review by Tien Yi Wong, MD, MPH, PhD, and Singapore Eye Research Institute colleagues concludes that Asians ma

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Authors: Liu A, Manche EE The authors report anterior segment optical coherence tomography (OCT) imaging findings in a case of central toxic keratopathy following laser in situ keratomileusis (LASIK) surgery for low hyperopia. OCT imaging 1 month after surgery demonstrates that the flap thickness is maintained and the location of stromal tissue loss is just posterior to the flap in the stromal bed in the affected area. This corresponds to the clinical observation of interface opacity extending posteri

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Authors: Srinivasan S, Herzig S The femtosecond laser is gaining popularity as a safe and effective alternative to the microkeratome for creating corneal flaps during LASIK. Rarely, gas bubble formation in the anterior chamber during laser flap creation can interfere with the eye tracking and iris registration software during the subsequent excimer laser ablation. Surgical steps to ensure successful eye tracking and iris registration in such cases are described in this report. PMID: 20415292 [PubM

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Conclusion This is a well-conducted Cochrane review, which carried out a thorough search for all suitable trials comparing laser eye surgery with phakic intraocular lenses for moderate to severe short-sightedness. Both techniques achieved the same success rate for the proportion of people who had 20/20 vision 12 months after surgery. People given phakic lenses were less likely to have a loss in their ‘best spectacle corrected visual acuity’ after treatment. However, on two occasions, cataracts develop

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A new type of procedure for correcting short-sightedness could be safer than laser eye surgery, according to a new scientific review. (Source: the Mail online | Health)

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Authors: Kohnen T, Klaproth OK Non-corrected residual refractive errors after cataract extraction and implantation of an artificial intraocular lens (IOL) lead to limited visual acuity or suboptimal usage of enhanced optical properties of IOLs, such as bifocal implants, which are dependent on postoperative emmetropia. In addition to the established corneal procedures for correction of ametropia (excimer laser surgery or limbal relaxing incisions) sulcus supported pseudophakic supplementary IOLs can al

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Conclusions Improvements in Pelli-Robson CS scores were observed during the first year after IVR/IVB in eyes with mCNV. Content Type Journal ArticleCategory Retinal DisordersDOI 10.1007/s00417-010-1341-xAuthors Sarah Moussa, The Ludwig Boltzmann Institute for Retinology and Biomicroscopic Laser Surgery Vienna AustriaSiamak Ansari-Shahrezaei, The Ludwig Boltzmann Institute for Retinology and Biomicroscopic Laser Surgery Vienna AustriaEva Smretschnig, The Ludwig Boltzmann Institute for R

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Conclusions. The authors describe an accurate and reliable setup to measure and record in vivo real-time changes in IOP measurement from the anterior chamber during laser surgery. Femtosecond laser flap creation exerts less extreme IOP fluctuations with improved chamber stability but requires more procedure time than does microkeratome. (Source: Investigative Ophthalmology)

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In reference to the article describing histological examination of epi-LASIK flaps, we report a unique postoperative problem. A 22-year-old man had epi-LASIK in both eyes after standard refractive surgery evaluation. The refractive error was −2.00 diopters sphere (DS) in each eye. Intraoperatively, the patient squeezed his eyes as the epikeratome was creating the epithelial flap. The epithelial flaps appeared thin and were spontaneously amputated. The laser was delivered as usual, and bandage contact le

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Conclusion: Flap thickness did not affect visual or refractive outcomes with a mechanical microkeratome with either blade type.Financial Disclaimer: No author has a financial or proprietary interest in any material or method mentioned. (Source: Journal of Cataract and Refractive Surgery)

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We report a case of Mycobacterium abscessus keratitis after elective laser in situ keratomileusis in a 19-year-old woman. The infection started 3 weeks after uneventful surgery, and the patient received multiple antimicrobial treatments without response. A corneal scrape isolate showed an acid-fast bacterium that was subsequently confirmed by culture to be M abscessus. Prompt treatment of oral moxifloxacin 400 mg twice daily and hourly topical amikacin 2.5% was started. Recovery occurred within the first

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A 48-year-old man with a history of myopic laser in situ keratomileusis (LASIK) had selective laser trabeculoplasty (SLT) for the treatment of glaucoma in the right eye. He subsequently developed grade 2 diffuse lamellar keratitis (DLK). He then elected to have SLT in the left eye and developed grade 1 DLK. To our knowledge, this is the first report of bilateral consecutive late postoperative DLK following SLT after LASIK.Financial disclosure: Neither author has a financial or proprietary interest in any

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We would like to make several comments about the article by Nishimura et al. Forward movements of the cornea measured by slit scan or similar devices after myopic laser in situ keratomileusis (LASIK) or photorefractive keratectomy have been reported by many authors. This phenomenon can be explained by the steepening of the posterior cornea caused by postoperative changes in the magnification ratio. Postoperative differences in the corneal thickness measurement by ultrasound and by slit scan or similar de

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