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Updated: Jun 3, 2026

Measuring Connectivity in the Primary Visual Pathway in Human Albinism Using Diffusion Tensor Imaging and Tractography

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Published on: August 11, 2016

Reading acuity in albinism: evaluation with MNREAD charts.

Kimberly Merrill¹, Katherine Hogue, Sara Downes

¹Department of Ophthalmology, University of Minnesota, Minneapolis, MN 55455, USA.

Journal of AAPOS : the Official Publication of the American Association for Pediatric Ophthalmology and Strabismus

|March 15, 2011

Summary

Individuals with albinism benefit from specific print sizes for effortless reading. The MNREAD charts identified a critical print size (CPS) larger than their reading acuity (RA) to optimize reading speed and function.

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Area of Science:

Ophthalmology
Low Vision Research
Genetics

Background:

Albinism affects vision, impacting reading ability.
Standard reading acuity (RA) may not reflect functional reading performance.
The MNREAD charts assess reading acuity (RA), maximum reading speed (MRS), and critical print size (CPS).

Purpose of the Study:

To evaluate reading performance in individuals with albinism using MNREAD charts.
To determine the optimal print size for effortless reading in this population.
To establish recommendations for educational and vocational support.

Main Methods:

63 subjects with albinism underwent MNREAD testing.
Reading continuous text to determine RA, MRS, and CPS.
Nystagmus, strabismus, and distance visual acuity were also recorded.

Main Results:

Median MRS was 150 words per minute.
Mean CPS (0.84 logMAR) was significantly larger than mean RA (0.53 logMAR).
Results varied among participants.

Conclusions:

MNREAD charts effectively measure functional reading in albinism.
A larger print size than standard RA is recommended for effortless reading.
Print size recommendations can aid educational and vocational planning.