Variation of Bruch's membrane opening in response to intraocular pressure change during scleral lens wear, in a population with keratoconus.

Purpose: The present study aimed to determine the potential impact of scleral lenses on intraocular pressure (IOP) by analysing the Bruch's membrane opening-minimum rim width (BMO-MRW) while the lenses are worn, in a population with keratoconus.

Methods: Participants were required to have keratoconus and be successfully fitted with scleral lenses for at least 3 months. A new pair of optimised scleral lenses was provided before the study.

The sociodemographic characteristics and social determinants of visual impairment in a homeless population in the Montreal area.

Objective: Homelessness is a serious social and public health concern in Canada. Individuals experiencing homelessness face numerous health problems and barriers in accessing health services. Visual impairment can exacerbate the lower quality of life experienced by people who are homeless, but its incidence among this population has been poorly documented in the literature.

The prevalence and causes of visual impairment among the male homeless population of Montreal, Canada.

Clinical Relevance: Homeless populations have lower health indicators, including in eye care. Few data exist on the levels and causes of visual impairment in Canadian homeless populations, and none in Montreal.

Background: This study aims to characterise the causes and levels of visual impairment, as well as eye care services utilisation among the Montreal homeless.

Effect of Latanoprostene Bunod on Optic Nerve Head Blood Flow.

Significance: Topical latanoprostene bunod increases capillary oxygen saturation and blood volume at the optic nerve head in healthy individuals.

Purpose: This study aimed to evaluate the effect of topical latanoprostene bunod on optic nerve blood volume and oxygen saturation in a population of healthy participants.

Methods: In this prospective double-blind crossover study, 23 healthy participants aged from 21 to 62 years were recruited.

Bruch Membrane Opening Minimum Rim Width Changes During Scleral Lens Wear.

Objective: The purpose of this study was to evaluate the change in Bruch membrane opening minimum rim width (BMO-MRW) during scleral lens (SL) wear.

Methods: Twenty young white subjects were enrolled (10 women and 10 men); preliminary evaluation consisted of serial measurements of intraocular pressure (IOP) using a dynamic noncontact tonometer (Corvis, Oculus), which also yielded a corneal biomechanical index and central corneal thickness, and BMO-MRW using optical coherence tomography imaging (OCT) imaging (Spectralis, Heidelberg) through 6 hrs to establish normative diurnal curves. The next day, participants were fitted with a 16-mm SL on one eye, and OCT measurements were repeated over the same time span.

Intra-ocular pressure variation associated with the wear of scleral lenses of different diameters.

Purpose: To evaluate the variation of intra-ocular pressure during scleral lens wear, and the influence of the lens diameter on the results.

Methods: This is a prospective, randomized study performed on Caucasian subjects (16 F; 5 M), aged 24.7 + 4.