Role of in vivo confocal microscopy in the diagnosis of infectious keratitis.

Purpose: To investigate the utility of in vivo confocal microscopy (IVCM) in the diagnosis of infectious keratitis (IK).

Methods: Retrospective chart review of 46 patients with a final diagnosis of IK were included in the study. All patients received IVCM corneal imaging using the Heidelberg Retinal Tomography III system.

Reduction of Acanthamoeba Cyst Density Associated With Treatment Detected by In Vivo Confocal Microscopy in Acanthamoeba Keratitis.

Purpose: Acanthamoeba keratitis (AK) is a severe vision-threatening ocular infection that is frequently a diagnostic challenge. Treatment course is lengthy and often not fully effective. Contact lens wear has been recognized as the prime risk factor for AK.

Repeatability of automated vessel density measurements using optical coherence tomography angiography.

Aims: To determine the repeatability of optical coherence tomography angiography (OCT-A)-derived automated vessel density measurements in the superficial retinal layer (SRL) and deep retinal layer (DRL) in healthy individuals.

Methods: 41 eyes of 21 healthy individuals were included in this study. OCT-A was performed using the NIDEK RS-3000 Advance with prototype OCT-A software.

Effects of lenses with different power profiles on eye shape in chickens.

Purpose: Defocus imposed to the periphery of the visual field can affect the development of foveal/central refractive errors. To make use of this observation, lenses can be designed to reduce myopia progression, but it is important to know which power profiles of the lenses are most effective. We have studied this question in chickens.

Individual set-point and gain of emmetropization in chickens.

During the developmental process of emmetropization evidence shows that visual feedback guides the eye as it approaches a refractive state close to zero, or slightly hyperopic. How this "set-point" is internally defined, in the presence of continuous shifts of the focal plane with different viewing distances and accommodation, remains unclear. Minimizing defocus blur over time should produce similar end-point refractions in different individuals.