IOL Tilt and Decentration
A cornea with a positive spherical aberration (SA) can be corrected by placement of an intraocular lens (IOL) with a negative SA value. However, the theoretical advantage of a negative SA can be offset by IOL tilt and decentration. Theoretical reports indicate that coma increases with rising IOL tilt and decentration under optical bench conditions. Thus, we analyzed internal higher-order aberrations (HOAs) based on tilt and decentration after cataract surgery and implantation of different aspherical IOLs with negative SA. (Source: Ophthalmology)...
POSTED 08/31/2010 at 06:00 PM --
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Effects of Nuclear Factor-{kappa}B Small Interfering RNA on Posterior Capsule Opacification [Lens]
Conclusions.
NF-B seems to be related to migration and proliferation of LECs. NF-B siRNA was effective in inhibiting the migration and proliferation of LECs in vitro and decreased PCO formation after cataract surgery in an in vivo rabbit model. (Source: Investigative Ophthalmology)...
POSTED 08/30/2010 at 05:19 PM --
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'Partial success' for lab-grown corneas
Conclusion
This small early stage study found that biosynthetic corneal tissue implanted into 10 patients remained viable two years after surgery, without causing serious complications or side effects. The implants also improved vision in some patients although results were significantly poorer when compared to patients who had donor implants (until contact lenses were used). Some patients experienced problems after surgery, which reduced the potential improvements in vision.
Since follow-up lasted only two years, it is uncertain if outcomes improved, deteriorated or remained the same after this time. In addition, as only 10 people were treated, there is a long way to go before it is known if biosynthetic corneal implants are a viable alternative to donor implants. This study warrants furt......
POSTED 08/26/2010 at 11:13 AM --
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Partial success of artificial corneas
Conclusion
This small early stage study found that biosynthetic corneal tissue implanted into 10 patients remained viable two years after surgery, without causing serious complications or side effects. The implants also improved vision in some patients although results were significantly poorer when compared to patients who had donor implants (until contact lenses were used). Some patients experienced problems after surgery, which reduced the potential improvements in vision.
Since follow-up lasted only two years, it is uncertain if outcomes improved, deteriorated or remained the same after this time. In addition, as only 10 people were treated, there is a long way to go before it is known if biosynthetic corneal implants are a viable alternative to donor implants. This study warrants furt......
POSTED 08/26/2010 at 11:13 AM --
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Prediction error and accuracy of intraocular lens power calculation in pediatric patient comparing SRK II and Pediatric IOL Calculator
Conclusions:
The prediction error and the accuracy of predictability of postoperative refraction in pediatric cataract surgery are comparable between SRK II and Pediatric IOL Calculator. The existence of the Pediatric IOL Calculator provides an alternative to the ophthalmologist for intraocular lens calculation in pediatric patients. Relatively small sample size and unequal distribution of patients especially the younger children (less than 3 years) with a short time follow-up (3 months), considering spherical equivalent only. (Source: BMC Ophthalmology - Latest articles)...
POSTED 08/24/2010 at 06:00 PM --
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REVIEW: Surgical correction of astigmatism during cataract surgery
(Source: Clinical and Experimental Optometry)...
POSTED 08/24/2010 at 02:13 AM --
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A cluster of acute-onset postoperative endophthalmitis over a 1-month period: investigation of an outbreak caused by uncommon species.
Conclusions The authors are unaware of any previous reports of postoperative endophthalmitis associated with Cellulosimicrobium cellulans. Prompt management with microbiological support, intravitreal antibiotics and PPV when needed were the key to good visual outcomes in this endophthalmitis outbreak.
PMID: 20733020 [PubMed - as supplied by publisher] (Source: The British Journal of Ophthalmology)...
POSTED 08/22/2010 at 06:00 PM --
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Emergence agitation after cataract surgery in children: a comparison of midazolam, propofol and ketamine.
Conclusions: Intravenous administration of a subhypnotic dose of midazolam or propofol in addition to a low dose of fentanyl just before discontinuing the sevoflurane anesthesia was both effective on decreasing the incidence and severity of emergence agitation in children undergoing cataract extraction without significant delaying recovery time and discharge. The effect of midazolam was clearer than that seen with propofol.
PMID: 20716081 [PubMed - in process] (Source: Paediatric Anaesthesia)...
POSTED 08/20/2010 at 01:27 PM --
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For Infants With Two Cataracts, Bilateral Surgery May Be Best: Study
When infants have bilateral congenital cataracts, removing them in one surgery instead of two will definitely save money and may also prevent a variety of problems, a recent paper says. Reuters Health Information (Source: Medscape Ophthalmology Headlines)...
POSTED 08/18/2010 at 04:02 PM --
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Emergence agitation after cataract surgery in children: a comparison of midazolam, propofol and ketamine
Summary (Source: Pediatric Anesthesia)...
POSTED 08/18/2010 at 12:06 AM --
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Angola: Over 13,000 People Undergo Eyes Surgery
At least 13,701 patients with cataracts, glaucoma and trouble of retina were submitted to operating intervention from August 2008 to August of 2010, in the Ophthalmologic Centre of Benguela. (Source: AllAfrica News: Health and Medicine)...
POSTED 08/17/2010 at 02:37 AM --
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National survey of the use of intraoperative antibiotics for prophylaxis against postoperative endophthalmitis following cataract surgery in the UK.
Authors: Murjaneh S, Waqar S, Hale JE, Kasmiya M, Jacob J, Quinn AG
PMID: 20710049 [PubMed - as supplied by publisher] (Source: The British Journal of Ophthalmology)...
POSTED 08/14/2010 at 06:00 PM --
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OptiMedica Sells Retina And Glaucoma Business To Topcon, Sharpens Focus On Laser Cataract Surgery Market
Global ophthalmic device company OptiMedica Corp. has announced that it has signed a definitive agreement to sell its retina and glaucoma assets to Topcon Corp., a strategic move that positions OptiMedica to focus exclusively on the continued development and commercialization of advanced technologies for the treatment of cataract (Source: Medical Design Online News)...
POSTED 08/10/2010 at 07:22 PM --
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[Cataract surgery - essentials for the general practitioner.]
Authors: Amstutz Ch, Thiel MA, Kaufmann C
Age-related cataracts are mainly caused by life-long accumulation of oxidative stress on the lens fibres. Symptoms include reduced visual acuity, requiring more light for reading, and glare. The only treatment that provides a cure for cataracts is surgery. Phacoemulsification represents the preferred method of lens removal. It involves fragmentation of the lens using ultrasound and insertion of an artificial intraocular lens. The preoperative assessment the general practitioner provides to surgeon and anesthesia team has an important share in the low complication rate of the procedure in the event of co-existing systemic disease. Growing patient expectation for spectacle independence following cataract surgery is met to some extent using techni......
POSTED 08/10/2010 at 06:00 PM --
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Reply: Comments on lift and crack technique for risky cataract cases & Lift and crack technique for phacoemulsification
We appreciate Bhargava and Bhargava and Carifi and Zuberbuhler's comments about the lift and crack technique we described for risky cataract cases. We agree with Bhargava and Bhargava that this technique was not defined for brunescent or black cataracts but rather for grade III to IV dense cataracts, which can be horizontally chopped and cracked. A through-and-through division of the nucleus is not always necessary in this technique, but segmentation into smaller triangular nuclear pieces is aimed for, similar to the technique shown in Bhargava and Bhargava's Figure 1. On the other hand, we believe that in situ chops with lateral separation would jeopardize the capsule integrity in the presence of incomplete capsulorhexis and/or zonular instability, particularly in brunescent cataracts. W......
POSTED 08/10/2010 at 03:53 AM --
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Usefulness of hydroimplantation technique for foldable IOL implantation
The hydroimplantation technique for inserting a foldable intraocular lens (IOL) without an ophthalmic viscosurgical device (OVD) described by Tak is, in my opinion, effective and safe. I use the irrigation cannula of the bimanual irrigation/aspiration device not only during implantation, but also in other situations that occur during cataract surgery. First, after I create 2 standard paracenteses, I find it useful to introduce an irrigating cannula into the eye through the left paracentesis to allow stability and positioning of the eye during a clear corneal incision. I then fill the anterior chamber with OVD but keep the irrigating cannula in the anterior chamber, which enables me to stabilize the eye during a continuous curvilinear capsulorhexis. It also allows me to add balanced salt so......
POSTED 08/10/2010 at 03:53 AM --
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Editorial Board
(Source: Journal of Cataract and Refractive Surgery)...
POSTED 08/10/2010 at 03:53 AM --
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Table of Contents
(Source: Journal of Cataract and Refractive Surgery)...
POSTED 08/10/2010 at 03:53 AM --
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Masthead
(Source: Journal of Cataract and Refractive Surgery)...
POSTED 08/10/2010 at 03:53 AM --
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Visual Acuity Chart
(Source: Journal of Cataract and Refractive Surgery)...
POSTED 08/10/2010 at 03:53 AM --
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