Most authors reach the layout stage with one question: Does it look right? Font chosen, margins set, everything fit to the page. What they rarely ask is whether a reader with low vision can get through it — and by the time that question comes up, if it comes up at all, the book is already at the proof stage. The decisions that cost nothing to get right at the start cost real money to fix at the end. Changing type size at proof means reflowing every spread. Changing paper stock means a new print run.
I think about this as both an author and a reader. My vision affects how I work and what I can read comfortably. I’ve sat with badly laid-out books and felt the specific fatigue of fighting a page — tracking lines that are too long, losing my place in justified text, squinting at type that’s a point or two too small. Those aren’t subjective preferences. They’re the direct result of layout decisions that didn’t account for the full range of readers.
The good news is that the decisions that make a book more readable for low-vision readers are the same ones that make it more readable for everyone. Making these choices belongs in your standard layout process, not in a separate accessible edition produced after the fact.
Start with type size
The minimum for accessible standard print is 12pt. That’s the floor, not the target. Fourteen-point is the better default for body text if your audience includes — or might include — readers with low vision.
The reason size matters isn’t just magnification. It’s flow. Readers with low vision typically adjust their magnification tools for standard 11–12pt type; text smaller than that forces them to zoom further in, which shrinks the visible area and breaks reading rhythm. In a printed book, there’s no zoom. The size you set is the size the reader has.
Fourteen points sits at the boundary between accessible standard print and dedicated large print, which begins at 16pt. For authors producing one edition intended to reach the widest possible audience, 14pt is the right target — close enough to large print to serve many low-vision readers, yet legible enough to read like a standard book.
One more thing to consider: size rules apply to every element on the page, not just body text. Page numbers, captions, footnotes, and running heads all need to meet the same floor. A reader who can navigate your body text at 12pt can’t read a 9pt footnote.
Pick a typeface for letter clarity, not tradition
The conventional wisdom — serif fonts for print, sans-serif for screens — has never been confirmed by controlled research, and for low-vision readers it doesn’t hold. What the evidence confirms clearly is that what matters most is not whether a font has serifs, but whether its letterforms are distinct from one another. Letters that are easy to confuse — the uppercase I and lowercase l, the numeral 1 and the letter l, a lowercase rn and a lowercase m — cause disproportionate difficulty for readers whose vision is already compensating for reduced acuity.
This is the design problem that Atkinson Hyperlegible was built to solve. The Braille Institute developed it in 2019, specifically for low-vision readers, in collaboration with a low-vision specialist and a panel of people with visual impairments. The font deliberately breaks typographic conventions — the uppercase I has serifs while the uppercase T does not, the lowercase r has an enlarged terminal — because the goal is character distinction, not stylistic consistency. Every decision in the design points at one outcome: making each letter unmistakable. It’s available for free under the SIL Open Font License and on Google Fonts. In February 2025, the Braille Institute released Atkinson Hyperlegible Next, an updated version with seven weights, support for more than 150 languages, and a variable font format.
If Atkinson Hyperlegible doesn’t fit the aesthetic of your book, the practical criteria to apply to any font are: large x-height, open counters, and no dramatic stroke contrast. Avoid fonts with thin strokes that disappear at small sizes, condensed letterforms that reduce spacing between characters, or decorative features that blur letter distinctions. Times New Roman fails on multiple counts and appears by name in several accessible print guides as a font to avoid for readers with low vision.
Set leading that gives the eye room to move
Leading — the vertical space between lines — is probably the most underused tool in accessible layout. Most book templates default to 120% of the type size: 12pt font, roughly 14.4pt leading. That’s adequate for readers with full vision. For low vision readers, the minimum is 1.5 times the font size, which puts 12pt type at 18pt leading.
The reason is eye tracking. When a reader finishes a line and returns to the left margin to begin the next one, tight leading makes it easy to end up on the wrong line. For readers with low vision, those who are already managing a reduced field of view, that error happens more often and takes longer to correct. Adequate leading is what lets the eye reliably find the start of the next line.
For accessible standard print, 1.5x is the target. Some publishers go to 2x for dedicated large print editions. The adjustment from the default 1.2x to 1.5x costs nothing and immediately reduces the most common source of reading fatigue for low vision readers.
Align left and never justify
Justified text — where every line stretches to meet both margins — looks tidy. It also creates variable spacing between words, and those gaps distribute unevenly across lines. Readers with low vision, those who rely on consistent word spacing to maintain tracking, lose their footing in justified text the same way a path with uneven pavers trips a person who depends on the rhythm of regular steps.
The fix is flush left, ragged right. The left margin is always in the same place. Every line starts from a consistent point. The uneven right edge is not a design problem; it’s evidence that the text isn’t being distorted to fill the column.
While you’re adjusting alignment, turn off automatic hyphenation. A hyphenated word split across a line break requires the reader to hold the first half of the word in memory while locating the second half at the start of the next line. For low vision readers, that’s a meaningful cognitive load on top of an already demanding reading task.
Keep lines short enough to track
The typographic standard for line length in single-column print is 45–75 characters per line, with 66 characters per line widely accepted as optimal. For low vision readers, shorter is better; under 60 characters per line is the accessible target.
The reason shorter lines help is the same reason adequate leading helps: finding the start of the next line. A reader with a narrow visual field — picture looking through a soda straw — has to travel farther to complete a long line, then return farther to begin the next one. Shorter lines reduce that travel.
If you’re setting 14pt type with 1-inch margins on a standard 6×9 trade paperback, your line length will naturally fall within the accessible range. The decisions compound: larger type and wider margins produce shorter lines without any additional adjustment.
Choose paper that reduces glare
Bright white paper with a glossy or coated finish creates specular glare — the reflective flash that makes it hard to read under direct light. For low vision readers, that glare washes out the contrast between the ink and the page, which is the contrast they depend on to read at all.
The accessible choice is matte or uncoated paper in cream or natural white. Cream paper reduces glare compared to bright white, and the slightly warmer background improves perceived contrast as the eye adapts to it. The fiction publishing convention of cream paper on uncoated stock is accessible by accident; no one talks about it in accessibility terms, but it produces exactly the reading comfort that accessible print guides recommend.
If you’re self-publishing through a print-on-demand service like IngramSpark or KDP, you can specify cream or natural uncoated stock at setup. That decision costs nothing extra and changes the reading experience for every reader, not just readers with low vision.
One more note on contrast: reversed type — white text on a dark background — is harder to read at body text sizes because ink spread on press thickens strokes and closes the counters of letters. Reserve it for display elements only.
Give white space structural work to do
White space isn’t the absence of content. It’s how a reader knows where one thing ends and another begins. Generous margins, paragraph spacing, and space above and below headings all reduce the visual density of a page — fewer elements competing for attention, clearer signals between sections — and that reduction is what keeps a low vision reader from hitting the wall three chapters in.
For bound books, inner margins need to be wider than outer margins to account for the gutter — text that rides too close to the spine disappears into the binding. A 1.25-inch inner margin and 0.875-inch outer margin is a reasonable starting point for a standard trade paperback; adjust based on page count and binding method.
Paragraph spacing above and below headings, and between body paragraphs, does structural work for the reader with low vision the same way it does for any reader — it signals breaks in the content without requiring the reader to parse formatting cues that might be invisible at reduced acuity.
None of these decisions exist in isolation, and none of them are expensive to get right before you go to print. If you’re building your layout in Mockingbird, you can test all of them without touching your manuscript — change the type size in the template, and every page reflows.