Reading speed during a mesopic visual acuity task

Mesopic Functional Visual Acuity in Normal Subjects

To evaluate mesopic functional visual acuity (FVA) with a newly developed system in normal subjects and to compare the results with photopic FVA, sixty-eight healthy volunteers (24.03 ± 4.42 [mean ± standard deviation] years) were enrolled in this study. A commercially available FVA measurement system (AS-28; Kowa, Aichi, Japan) was modified to measure FVA under mesopic conditions as well as ph...

The Effects of Reading Speed on Visual Search Task

Speed reading training enhances one’s reading speed. Typically, those who train using the Park-Sasaki training method can read all the characters sequentially with the reading speed of over 10,000 characters per minute (about over 4,000 words per minute in English sentences). It means that they take in a huge amount of information during speed reading. Our study investigated the training effect...

Are Individual Differences in Reading Speed Related to Extrafoveal Visual Acuity and Crowding?

Readers differ considerably in their speed of self-paced reading. One factor known to influence fixation durations in reading is the preprocessing of words in parafoveal vision. Here we investigated whether individual differences in reading speed or the amount of information extracted from upcoming words (the preview benefit) can be explained by basic differences in extrafoveal vision--i.e., th...

A comparison of mesopic visual acuity and objective visual quality following cataract surgery with hydrophobic acrylic intraocular lenses

PURPOSE To evaluate mesopic visual acuity and visual quality as measured by objective scatter index (OSI) in pseudophakic eyes with long-term follow-up after implantation of hydrophobic acrylic lenses made from two different lens materials. SETTING This study was carried out in a private clinic. DESIGN This study was an observational cohort study. METHODS This pilot study included 181 eye...

Predicting lamp spectrum effects at mesopic levels. Part 2: Preferred appearance and visual acuity