Active clinical trials for "Presbyopia"

The Presbia Flexivue Microlens is a corneal inlay.

The purpose of this study is to investigate the changes in the pilocarpine-induced ciliary body movement before and after cataract extraction in order to determine the effect of lens sclerosis on the ciliary muscle contractility.

This prospective cohort study enrolled patients with implantation of a trifocal IOL. Only one eye of each patient was enrolled. Eyes were devided into three groups according the axial length (AL), including the short AL group, the control group and the long AL group. Manifest refraction, uncorrected and distance-corrected visual acuity at different distances, contrast sensitivity, aberrations and IOL decentration were measured three months after surgery. Spectacle independence, adverse photic phenomena, overall satisfaction and life quality were assessed with a questionnaire.

This study is a prospective, open, not randomized, unilateral multicenter eye study consisting of two study arms to observe the long term satisfaction of patients after an INTRACOR treatment. The satisfaction is determined with the help of the patient perception and the subjective / objective diagnostic data. The hypothesis of the study is that patients after an INTRACOR treatment are satisfied in the long term.

Primary objective of this study is the construction and validation of an experimental environment for the simulation of a variety of near- and intermediate-vision activities of daily living (ADLs) in different combinations of light temperature and light intensity.

Patients who underwent presbyopic correction with bilateral bifocal intraocular lenses implantation are supposed to have sufficient uncorrected vision capacity for activities of daily living (ADLs) that require near vision acuity (NV), (ie. book reading). However, it is known that light intensity and temperature has a great impact on near vision capacity. Primary objective of this study is to identify the optimal task lighting conditions (in terms of light intensity and temperature) for ADLs that demand near vision acuity for a sample oa patients who underwent presbyopic correction with bilateral bifocal intraocular lenses implantation

The purpose of this study is to evaluate the long-term clinical acceptability and overall satisfaction with the IC-8 IOL at least 12 months post-IOL implantation.

Primary objective of this study is the exploration of the impact of personality type, social roles and working mandates οn the visual capacity and satisfaction of patients that underwent pseudophakic presbyopic correction.

The main purpose of this study was to identify electrophysiological predictive markers of post-correction visual comfort for presbyopic patients.

Educating patients on visual performance with presbyopic correcting intraocular lenses is crucial. Understanding the defocus curve of pre-presbyopic and emerging presbyopic crystalline lens will provide eye care provides useful information to better educate patients on visual performance expectations after cataract surgery with a presbyopic correcting intraocular lens. Our objective will be to assess the subjective range of clear vision of a pre-presbyopic and emerging presbyopic patient population utilizing a defocus curve. A comparison of the pre-presbyopic and emerging presbyopic defocus curve to all FDA-approved presbyopic intraocular lenses will be discussed in the manuscript.