Myopic observers may not benefit to the same extent as emmetropes from adaptive optics (AO) correction in a visual acuity (VA) task. To investigate this, we measured AO-corrected VA in 10 low myopes and 9 emmetropes. Subjects were grouped by refractive error. Mean spherical equivalent refractive error was -2.73 D (SEM = 0.35) for the myopes and 0.04 D (SEM = 0.1) for the emmetropes. All subject...

The retinal and the choroidal thickness were measured at four locations along horizontal direction (foveola, one nasal to fovea two temporal) in a group of 43 young adults (mean age: 27.1 ± 3.9 years), with ocular refraction ranging from emmetropia high myopia (0 −10D). Thickness values obtained OCT images centered foveal depression. exhibited correlation all eccentricities but not fovea. When ...

purpose: to evaluate the visual outcomes of lasik in myopic eyes. methods: this interventional case series was performed on records of 345 eyes of 179 patients for correcting myopia with astigmatism < 3.00 diopter (d). all patients were operated by one surgeon (h.n.) with the nidek ec 5000 excimer laser. all patients had at least one year follow up. based on preoperative refraction, patients we...

In this study we evaluate the visual outcomes, safety, efficacy, and stability of implanting of second sulcus intraocular lens (IOL) to correct unsatisfied ametropic patients after phacoemulsification. Methods. Retrospective study of 15 eyes (15 patients) underwent secondary intraocular lens implanted into the ciliary sulcus. The IOL used was a Sensar IOL three-piece foldable hydrophobic acryli...

PURPOSE To evaluate bilateral myopia following blunt trauma to one eye. CASE REPORT Traumatic myopia is a rare transient situation which may be seen in the injured eye or both eyes after blunt ocular trauma. We examined one case with transient myopia in the left eye which had been exposed to a blunt ocular injury. Myopia was also observed in the right eye 12 hours after the trauma. The right ...

A series of 67 cases of epikeratophakia is presented with an average time from surgery of 12.2 months. For aphakia there was a delay in the recovery of vision, but by nine months 83% of 57 patients achieved an acuity equal to, or within 1 line of, the preoperative value. 57% were corrected to within 3 dioptres of emmetropia, but in the latter part of the series 75% were within this range. Astig...

PURPOSE To compare 2 methods of axial length measurement, immersion ultrasonography and partial coherence interferometry, and to elucidate surgical outcomes based on immersion measurements. SETTING Oregon Eye Institute, Eugene, Oregon, USA. METHODS Axial length measurements in 50 cataractous eyes were obtained by optical biometry (IOLMaster, Zeiss Humphrey Systems) and immersion ultrasound ...

Understanding of the biomechanics accommodative apparatus in eyes with different refraction is important for solving problems theoretical and practical ophthalmology. Purpose: To determine changes anterior eye segment dimensions during accommodation response normal patients myopia, hypermetropia. Methods Material: 116 (56 aged from 18 to 30 years, -2.0 + 2.0 D) were examined. All underwent a fu...

The present paper presents a review of multifocal intraocular lenses (IOLs) focusing on the optical principle used to create multifocality: refraction and diffraction. The principal optics of the different IOL designs in the market were discussed and compared. The main conclusion of this study states that diffractive bifocal optics seems to be superior to refractive designs which is well-substa...

Axial length of the eye correlates with magnitude myopia. However, there are conflicting reports on relationship between certain corneal parameters myopia magnitude. The objective this study was to compare ocular biometry and emmetropic myopic groups. Participants (n=127) were categorized as emmetropia (spherical equivalent, SE, ±0.50D), low (-0.75D≤SE&lt;-6.00D) high (SE≥-6.00D). difference in...