Publications by authors named "Markku Leinonen"

Purpose: The purpose of the study was to study the association between retinal parameters and motor and cognitive outcomes in children born very preterm.

Methods: This study is part of a prospective cohort study of very preterm infants (birth weight ≤ 1500 grams/gestational age < 32 weeks). At 11 years of age, the ophthalmological assessment included a retinal optical coherence tomography (OCT) examination of the peripapillary retinal nerve fibre layer (PRNFL) and the macular ganglion cell layer (GCL).

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Purpose: This study explores the effect of glaucomatous visual field defects on several neuropsychological tests that are often used in research and in clinical settings.

Methods: Nineteen glaucoma patients and nineteen healthy participants, which are current drivers and older than 65 years old were included. All participants completed the Montreal Cognitive Assessment (MoCA), the Trail Making Test (TMT), the Benton Visual Retention Test (BVRT), the Snellgrove Maze Task (SMT) and the Digit Span Test (DST).

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Purpose: To clinically verify the formula of Bennett et al. (Graefes Arch Clin Exp 1994; 232: 361) of determining the size of retinal features and to study the previously unknown conversion factor of Topcon fundus camera.

Methods: Fundus photographs were taken from 17 healthy volunteers with Topcon and telecentric Zeiss fundus cameras.

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Purpose: The purpose was to study the effect of prematurity on the macula-disc centre distance and whether it could be used as a reference tool for determining the size of retinal features in prematurely born children by fundus photography.

Methods: The macula-disc centre distance of the left eye was measured in pixels from digital fundus photographs taken from 27 prematurely born children aged 10-11 years with Topcon fundus camera. A conversion factor for Topcon fundus camera (194.

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Background: Patients with early age-related maculopathy (ARM) do not necessarily show obvious morphological signs or functional impairment. Many have good visual acuity, yet complain of decreased visual performance. The aim of this study was to investigate the aging effects on performance of parafoveal letter recognition at reduced contrast, and defects caused by early ARM and normal fellow eyes of patients with unilateral age-related macular degeneration (nfAMD).

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Purpose: To develop a simple and clinically useful technique for observing fixation at an extrafoveal locus (preferred retinal locus [PRL]) with different targets and texts in age-related macular degeneration (AMD).

Methods: A standard slit lamp was modified by adding several fixation targets in the illumination pathway for direct observation and documentation of fixation during fundus examination. Fixation patterns were analyzed in 30 subjects with AMD.

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