purpose: to compare the efficacy of adding an opposite clear corneal incision (occi) on the steep axis during phacoemulsification in reducing the pre-existing corneal astigmatism. methods: this randomized clinical trial was performed on 120 eyes with corneal astigmatism of >1d undergoing phacoemulsification. incisions were made based on the type of astigmatism as follows: superior or superior+o...

purpose: to evaluate the effectiveness of limbal relaxing incision (lri) during phacoemulsification for correcting pre-existing corneal astigmatism. methods: the study included 21 eyes of 21 patients undergoing phacoemulsification combined with lri and 36 eyes of 36 patients undergoing phacoemulsification without lri as controls. lri was created according to a nomorgram based on preoperative as...

We read with interest the article by Savini and Naeser on refractive astigmatism following toric intraocular lens (IOL) implantation. In the group of 40 eyes phacoemulsification was performed through a 2.75-mm temporal incision. In Table 1 it was indicated that surgical-induced corneal astigmatism along the surgical meridian (mean 6 SD) was -0.15 6 0.40 diopters (D; range, -0.81 to þ0.79 D) in ...

BACKGROUND The limbal relaxing incisions (LRIs) technique is a safe and an inexpensive procedure, which is simple for experts to perform. It can effectively reduce astigmatism and result in a rapid visual rehabilitation. But there are few reports about reducing pre-existing corneal astigmatism by LRI in ICL surgery. Our research was aimed to study the effect of limbal relaxing inci sions during...

PURPOSE To establish whether average refractive overcorrection or undercorrection of corneal astigmatism based on the orientation (rule) of the astigmatism occurs if toric intraocular lenses (IOLs) are calculated on the basis of anterior corneal measurements in eyes requiring toric IOL cylinder power of 2.50 diopters (D) or greater. METHODS One hundred thirteen consecutive eyes with anterior ...

OBJECTIVE To evaluate changes in corneal astigmatism in patients undergoing orbital decompression surgery. METHODS This retrospective, non randomized comparative study involved 42 eyes from 21 patients with thyroid ophthalmopathy who underwent orbital decompression surgery between September 2011 and September 2014. The 42 eyes were divided into three groups: control (9 eyes), two-wall decompr...

PURPOSE To define measures of assessing success and subsequent ways to improve excimer laser treatment of astigmatism. METHODS We studied 97 eyes of 79 patients, followed for 12 months, that underwent photorefractive keratectomy (PRK) for myopia and astigmatism with a VISX 20/20 excimer laser. Preoperative spherical equivalent refraction at the corneal plane was between -1.00 and -15.00 D. Me...

Background In this retrospective randomized case series, we compared bilateral symmetry between OD and OS eyes, intercorneal differences and Functional Optical Zone (FOZ) of the corneal aberrations. Methods Sixty-seven normal subjects (with no ocular pathology) who never had any ocular surgery were bilaterally evaluated at Augenzentrum Recklinghausen (Germany). In all cases, standard examinat...

PURPOSE To describe the results of cataract extraction with toric intraocular lens (IOL) implantation in patients with preexisting astigmatism from three corneal conditions (keratoconus, postkeratoplasty, and postpterygium surgery). METHODS Cataract patients with topographically stable, fairly regular (although sometimes very high) corneal astigmatism underwent phacoemulsification with implan...

Background. To evaluate the change in corneal astigmatism after intrastromal corneal ring segment (ICRS) implantation in keratoconus patients with previous deep anterior lamellar keratoplasty (DALK). Design was a longitudinal, retrospective, interventional study. The study included 25 eyes of 24 patients with keratoconus who had DALK performed at least two years prior to ICRS implantation. All ...