odern cataract surgery aims not only to remove lens opacities but also to achieve correction of any refractive error. In addition to restoration of uncorrected visual acuity, correction of preexisting astigmatism is also important, and treatment options for this purpose include corneal limbal relaxing incisions, excimer laser photoablation and toric intraocular lens (IOL) implantation. Shimizu ...

PURPOSE To evaluate distance and near contrast sensitivity (CS) under photopic and mesopic conditions before and after refractive lens exchange (RLE) and implantation of the aspheric AcrySofReSTOR (SN6AD3 model) intraocular lens (IOL). METHODS Seventy-four eyes of 37 patients after RLE underwent bilateral implantation with the aspheric AcrySof ReSTOR IOL. The patient sample was divided into m...

BACKGROUND To report a patient with penetrating keratoplasty (PKP) graft endothelial failure implanted with toric intraocular lens (IOL) who was treated with Descemet stripping endothelial keratoplasty (DSAEK). CASE PRESENTATION A 40 year old male patient implanted with toric intraocular lens for the treatment of post PKP astigmatism, presented for the treatment of graft endothelial failure'....

Correction of corneal astigmatism is a key element of cataract surgery, since post-surgical residual astigmatism can compromise the patient's uncorrected visual acuity. Toric intraocular lenses (IOLs) compensate for corneal astigmatism at the time of surgery, correcting ocular astigmatism. They are a predictable treatment. However, accurate measurement of corneal astigmatism is mandatory for ch...

The main result of this paper is the proof of Nash conjecture for stable toric varieties. We also introduce Nash problem for pairs and prove it in the case of pairs (X, Y ) of toric variety X and a proper closed T -invariant subset Y , containing Sing(X).

purpose : to evaluate distance and near contrast sensitivity (cs) under photopic and mesopic conditions before and after refractive lens exchange (rle) and implantation of the aspheric acrysof restor (sn6ad3 model) intraocular lens (iol) methods : sixty eyes of 30 consecutive patients after rle underwent bilateral implantation with the aspheric acrysof restor iol. the patients sample was divide...

By Noel Alpins, FRANZCO, FRCOphth, FACS The ASSORT Toric Calculator offers unique features, designed for accuracy and functionality, that are not available on other calculators provided by implant companies or private groups. Its primary unique feature is the ability to calculate the most effective implant (sphere and toricity) available from all companies worldwide and compare IOLs based on th...

M anagement of astigmatism at the time of cataract or refractive lens surgery has evolved to include arcuate keratotomy and toric intraocular lens (IOL) implantation. Integration of preoperative corneal diagnostic instrumentation via Streamline digital wireless connectivity to the LENSARTM femtosecond laser (LENSAR Inc., Orlando, FL, US) now allows improved precision and accuracy of arcuate inc...

We introduce a notion of balanced configurations of vectors. This is motivated by the study of rational A-hypergeometric functions in the sense of Gelfand, Kapranov and Zelevinsky. We classify balanced configurations of seven plane vectors up to GL(2, R)-equivalence and deduce that the only gkz-rational toric four-folds in P are those varieties associated with an essential Cayley configuration....

We report the case of a 37-year-old man with a high myopic keratoconus eye that was treated with a posterior chamber toric implantable collamer lens (ICL) in Korea. The patient had a history of contact lens intolerance and did not want to have a corneal transplantation. His uncorrected visual acuity (UCVA) and best spectacle corrected visual acuity were 0.02 and 0.4 in the left eye, respectivel...