c(
person("Tjebo", "Heeren",
role = c("aut", "cre"),
email = "tjebo@gmx.de",
comment = c(ORCID = "0000-0001-5297-2301")),
person("Antoine", "Fabri", role = "ctb"))
A tool to facilitate common tasks in ophthalmic research:
Conversion between different visual acuity notations (Snellen, logMAR
and ETDRS), counting of patients, recode right and left eyes and reshape
eye side specific variables between wide and long format. The 'eye'
package also contains a real life data set of people with intravitreal
injections with anti-vascular endothelial growth factor (anti-VEGF),
made available by Fasler et al. (2019) <doi:10.1136/bmjopen-2018-027441>.
Visual acuity conversion is based on
Schulze-Bonsel et al. (2006) <doi:10.1167/iovs.05-0981>,
Gregori et al. (2010) <doi:10.1097/iae.0b013e3181d87e04>,
Beck et al. (2003) <doi:10.1016/s0002-9394(02)01825-1> and
Bach (2007) <http:michaelbach.de/sci/acuity.html>.
Tjebo Heeren [aut, cre] (<https://orcid.org/0000-0001-5297-2301>),
Antoine Fabri [ctb]

There is no ophthalmic researcher who has not had headaches from
the handling of visual acuity entries. Different notations, untidy entries.
This shall now be a matter of the past. Eye makes it as easy as pie to work
with VA data - easy cleaning, easy conversion between
Snellen, logMAR, ETDRS letters, and qualitative visual acuity
shall never pester you again. The eye
package automates the pesky task to count number of patients and eyes,
and can help to clean data with easy re-coding for right and left eyes.
It also contains functions to help reshaping eye side specific variables
between wide and long format. Visual acuity conversion is based on
Schulze-Bonsel et al. (2006) <doi:10.1167/iovs.05-0981>,
Gregori et al. (2010) <doi:10.1097/iae.0b013e3181d87e04>,
Beck et al. (2003) <doi:10.1016/s0002-9394(02)01825-1> and
Bach (2007) <http:michaelbach.de/sci/acuity.html>.

Prepare/Analyse Eye Tracking Data for Reading
c(
person( given = "San",
family = "Verhavert",
role = c("aut", "cre"),
email = "verhavertsan@gmail.com" ),
person( given = "Tine",
family = "van Daal",
role = c( "aut" ),
email = "tine.vandaal@uantwerpen.be" ),
person( given = "Leen",
family = "Catrysse",
role = c( "aut" ),
email = "Leen.Catrysse@uantwerpen.be" ) )
Functions to prepare and analyse eye tracking data of reading
exercises. The functions allow some basic data preparations and code fixations
as first and second pass. First passes can be further devided into forward and
reading. The package further allows for aggregating fixation times per AOI or
per AOI and per type of pass (first forward, first rereading, second). These
methods are based on Hyönä, Lorch, and Rinck (2003) <doi:10.1016/B978-044451020-4/50018-9>
and Hyönä, and Lorch (2004) <doi:10.1016/j.learninstruc.2004.01.001>. It is
also possible to convert between metric length and visual degrees.
San Verhavert [aut, cre],
Tine van Daal [aut],
Leen Catrysse [aut]