PURPOSE To investigate the refractive outcomes and spherical aberration of multifocal LASIK to create a distant-dominant center and near-dominant periphery in hyperopic, myopic, and emmetropic presbyopia. METHODS One hundred ninety-five eyes with myopic presbyopia and 119 eyes with hyperopic or emmetropic presbyopia that underwent LASIK or epithelial LASIK (epi-LASIK) were assessed out to 3 m...

PURPOSE To evaluate the efficacy, safety, predictability, and visual performance of excimer laser photorefractive keratectomy (PRK) for myopia greater than -8 diopters (D). METHODS Fifty-four patients (104 eyes) with myopia from -8D to -13D and cylinder up to -4D received surface ablation technique with the Allegretto wave version 1009-1 excimer laser to correct their refractive error. The pa...

30 Purpose: To analyse, describe and test diverse corneal and anterior segment parameters 31 in normal and keratoconic eyes to better understand the geometry of the keratoconic 32 cornea. 33 34 Method: 44 eyes from 44 keratoconic patients and 44 eyes from 44 healthy patients 35 were included in the study. The Pentacam System was used for the analysis of the 36 anterior segment parameters. New a...

PURPOSE To evaluate long-term outcomes after photorefractive keratectomy (PRK). METHODS A retrospective follow-up study of patients who received PRK at 5.0- to 6.5-mm optical zones, using the Summit broad beam excimer laser (Summit Technology, Inc., Waltham, MA) at Odense University Hospital, Odense, Denmark, between 1992 and 1998. One randomly selected eye of each patient was used in the sta...

The stretching capability of the zonules was studied in 40 human eyes obtained postmortem from 27 patients. A continuous circular capsulorhexis (CCC) (2.2-6.8 mm) was performed, and the lenses were removed by either phacoemulsification (26 eyes) or planned extracapsular cataract extraction (ECCE) (14 eyes). Maximal zonular stretch was calculated as the difference in distance between the ciliary...

Introduction: To determine the distance of Extraocular Muscle (EOM) insertions to limbus in Iranian people. Materials and Methods: 173 cases (173 eyes) were entered in an observational cross-sectional study. Patients referred to the Khatam-al-Anbia Hospital were included. All of them had to be operated on specific indications. After 360 peritomy in the operating room, the distance between EM in...

PURPOSE To evaluate visual and refractive outcomes and safety of implantable collamer lens (ICL) implantation in low-to-moderate myopia. SETTING Private Practice - Dougherty Laser Vision, Westlake Village, CA, USA. METHODS A chart review was performed in 56 (104 eyes) consecutive patients who underwent implantation of the Visian ICL V4 model. Inclusion criteria were age between 21 and 40 ye...

BACKGROUND To investigate the visual and refractive outcomes in patients with mild to moderate myopia after laser-assisted subepithelial keratectomy (LASEK) using the 500 Hz pulse rate of the Triple-A profile. METHODS Thirty-six eyes of 20 patients (mean age, 27.5 ± 4.6 years) were included in this prospective, consecutive study. Uncorrected distance visual acuity (UDVA), corrected distance v...

AIM To evaluate and compare the efficacy and stability of intrastromal corneal ring segment (ICRs) implantation with cross-linking (CXL) using different sequence and timing. METHODS In this single retrospective study, 86 keratoconic eyes subjected the ICRs implantation. We analyzed only 41 eyes that had complete follow-ups. They were divided into three groups: ICRs implantation was applied on...

purpose : to describe a distinctive pattern of induced higher order aberration (hoa) after lasik for mixed astigmatism case reports : wavefront-guided lasik with iris recognition and eye tracking (excimer laser: technolas 217z apt protocol microkeratome: moria cb) was performed in six eyes with moderate to high mixed astigmatism for a nominal optical zone of 6.3 mm. the patients were re-examine...