Efficacy of spectacle lenses specifically designed for myopia control: systematic review and meta-analysis.

Purpose: To investigate the efficacy of spectacle lenses designed to control myopia progression in individuals under 18 years old, focusing on changes in spherical equivalent refraction (SER), axial length (AL) and relative peripheral refraction (RPR).

Methods: A systematic review was conducted according to Prisma guidelines. Databases searched included PubMed, Embase, and Scopus, covering studies from the last six years without language restrictions.

What Are the Dry Eye Questionnaires Available in the Scientific Literature Used for? A Scoping Review.

Purpose: Dry eye disease (DED) is a frequent chronic ophthalmic condition. Its diagnosis includes tests and patient reported outcomes (PRO) questionnaires. Although many PRO dry eye questionnaires (PRO-DEQs) are available, they differ greatly from each other and not all have been validated.

Patient selection to optimize near vision performance with a low-addition trifocal lens.

Purpose: To assess the impact of ocular biometric variables on the visual performance achieved with a low addition trifocal intraocular lens (MIOL).

Methods: Retrospective observational study including 34 eyes. Preoperative measured variables included mean corneal power (Km), corneal regular astigmatism (RA), anterior chamber depth (ACD), axial length (AXL), total irregular astigmatism (IA), spherical aberration (SA) and distance from pupil center to vertex normal (µ).

New Approach for the Calculation of the Intraocular Lens Power Based on the Fictitious Corneal Refractive Index Estimation.

Purpose: To identify the sources of error in predictability beyond the effective lens position and to develop two new thick lens equations.

Methods: Retrospective observational case series with 43 eyes. Information related to the actual lens position, corneal radii measured with specular reflection and Scheimpflug-based technologies, and the characteristics of the implanted lenses (radii and thickness) were used for obtaining the fictitious indexes that better predicted the postoperative spherical equivalent (SE) when the real effective lens position (ELP) was known.

Standard Clinical Outcomes With a New Low Addition Trifocal Intraocular Lens.

Purpose: To evaluate the standard clinical outcomes, defocus curves, and satisfaction obtained with a new diffractive low addition trifocal intraocular lens (IOL).

Methods: Thirty patients who were implanted with the Versario Multifocal 3F IOL (Valeant Med Sp.zo.

Confounding sizing in posterior chamber phakic lens selection due to white-to-white measurement bias.

Purpose: To assess the agreement in the white-to-white (WTW) measurement with two different devices, the reproducibility and the probability of confusing sizing (PCS) in selecting a different implantable collamer lens (ICL).

Study Design: Retrospective observational case series.

Methods: Images of 192 eyes were captured with both devices.

From Presbyopia to Cataracts: A Critical Review on Dysfunctional Lens Syndrome.

Dysfunctional lens syndrome (DLS) is a term coined to describe the natural aging changes in the crystalline lens. Different alterations in the refractive properties and transparency of the lens are produced during the development of presbyopia and cataract, such as changes in internal high order aberrations or an increase in ocular forward scattering, with a potentially significant impact on clinical measures, including visual acuity and contrast sensitivity. Objective technologies have emerged to solve the limits of current methods for the grading of the lens aging, which have been linked to the DLS term.

Prediction of surgically induced astigmatism in manual and femtosecond laser-assisted clear corneal incisions.

Purpose: To assess the surgically induced astigmatism with femtosecond laser-assisted and manual temporal clear corneal incisions and to evaluate the performance of a model for prediction of the surgically induced astigmatism based on the preoperative corneal astigmatism.

Methods: Clinical data of 104 right eyes and 104 left eyes undergoing cataract surgery, 52 with manual incisions and 52 with femtosecond laser-assisted incisions in each eye group, were extracted and revised retrospectively. In all cases, manual incisions were 2.

Biometric Factors Associated with the Visual Performance of a High Addition Multifocal Intraocular Lens.

Unlabelled: Purpose/Aim: To evaluate the impact of ocular parameters on the visual performance achieved with the multifocal intraocular lens (IOL) Bi-Flex M 677MY.

Materials And Methods: About 26 subjects were included in the current study. Several physiological variables were retrieved from the 3-month follow-up visit, including pupil diameter and distance from pupil center to the vertex normal of the anterior cornea (µ).

Agreement and repeatability of objective systems for assessment of the tear film.

Purpose: To assess the agreement and repeatability of two objective systems for measuring the tear film stability.

Methods: Retrospective analysis of the tear film stability of 99 healthy right eyes measured with a videokeratoscope (VK) and the Optical Quality Analysis System (OQAS, Visiometrics). Two consecutive measures were taken with both systems, with an interval of 10 min between them.

Corneal biomechanics after laser refractive surgery: Unmasking differences between techniques.

The hypothesis that small-incision lenticule extraction provides better preservation of corneal biomechanics than previous laser refractive techniques has led to a growth in the interest in clinical and experimental research in this field. This hypothesis is based on the fact that corneal layers with greater stiffness are preserved with this new technique. However, this hypothesis is controversial because clinical research has shown a great disparity in the outcomes.

Ocular surface and tear film status among contact lens wearers and non-wearers who use VDT at work: comparing three different lens types.

Purpose: To analyze differences in the ocular surface appearance and tear film status of contact lens wearers and non-wearers in a group of visual display terminals (VDT) workers and additionally to assess differences between lens materials.

Methods: Cross-sectional study of 236 office workers, of whom 92 were contact lens wearers. Workers provided information on their contact lenses (conventional hydrogel, silicone hydrogel or rigid gas permeable lenses) and exposure to VDT at work.

New parameters for evaluating corneal biomechanics and intraocular pressure after small-incision lenticule extraction by Scheimpflug-based dynamic tonometry.

Purpose: To evaluate parameters and dynamic corneal densitometry with a new dynamic Scheimpflug analyzer (Corvis ST) in eyes having small-incision lenticule extraction (SMILE).

Setting: Qvision, Vithas Virgen del Mar Hospital, Almería, Spain.

Design: Retrospective case series.

Corneal Thickness After SMILE Affects Scheimpflug-based Dynamic Tonometry.

Purpose: To evaluate the corneal biomechanical changes due to small incision lenticule extraction (SMILE) measured by Scheimpflug-based dynamic tonometry and to assess the impact of the corneal thickness.

Methods: Sixty-eight patients measured with the Corvis ST (Oculus Optikgeräte GmbH, Wetzlar, Germany) preoperatively and 1 month after SMILE were included in this retrospective observational study. Patients were divided into three groups depending on the preoperative spherical equivalent: low from -1.

Effect of contact lens use on Computer Vision Syndrome.

Purpose: To analyse the relationship between Computer Vision Syndrome (CVS) in computer workers and contact lens use, according to lens materials.

Methods: Cross-sectional study. The study included 426 civil-service office workers, of whom 22% were contact lens wearers.