Magnification options for low vision
For many people living with low vision, magnification can make everyday tasks such as reading letters, labels, menus and prescriptions more accessible.
While a magnifier is not a cure for sight loss, the right device can make a significant difference to independence and confidence.
On this page, we explore the different types of magnifiers and how best to use them.
Getting started
As there are many types and strengths of magnifier available, a low vision assessment is strongly recommended.
This should be carried out by a qualified professional, such as a dispensing optician or a Rehabilitation Officer for Visual Impairment (ROVI), who can advise on the most appropriate solution for your individual needs.
Optical magnifiers
Handheld magnifiers (held above the page)
Handheld magnifiers are held between your eye and the text and are:
- Available in a range of strengths (typically from around 2× to 12.5× magnification).
- Often available with built-in illumination.
- Portable and convenient for quick tasks such as reading price tags or post.
Stand magnifiers (resting on the page)
These sit directly on the page at a fixed distance from the text.
- Particularly useful for longer reading tasks.
- Often easier to keep steady.
- Usually available with built-in lighting.
- May require you to wear your reading prescription glasses while using them.
"While inexpensive magnifiers are widely available, quality varies. Optical clarity, durability and lighting quality can differ considerably, so professional advice is valuable before purchasing."
Magnifying reading glasses
There are also magnifying lenses available in spectacle frames, offering hands-free use.
Standard over-the-counter reading glasses typically provide low levels of magnification (often up to around 2×). Lens strength is usually shown in dioptres (D). For example, 2× magnification is approximately +4.00D (commonly referred to as “plus fours”).
These are available through professional assessment. With stronger magnification, working distance becomes very close and it may only be practical to use one eye. In these cases, the magnifying lens is fitted on the appropriate side.
Important considerations
Magnification is governed by the physics of light, and there are some unavoidable trade-offs:
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Higher magnification = smaller field of view.
You will see less text at one time.
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Higher magnification = closer working distance.
The lens must be held closer to the page to focus.
For this reason, it is usually best to use the lowest level of magnification that meets your needs as this maximises how much you can see at once and can make reading more comfortable.
Lighting matters
Good lighting plays a crucial role in improving reading comfort and visual clarity, especially for individuals with low vision.
Many magnifiers are designed with built-in LED lights, which provide direct illumination to the text. Adjustable brightness settings can be particularly beneficial, allowing users to tailor the light level to their personal comfort, especially if they are sensitive to glare or harsh lighting.
It's also important to position the light carefully so that it illuminates the page evenly without casting shadows, which can interfere with reading and reduce overall ease of use.
Practical tips for using a magnifier
Position the centre of the lens over your strongest area of vision.
When reading a line of text, try moving the paper rather than your eyes or the magnifier excessively.
A clipboard or reading stand can help you position text at a comfortable angle.
If the image is unclear, try holding the magnifier slightly closer to the page.
Sit comfortably and avoid leaning excessively.
Wash gently with warm water and a small amount of washing-up liquid, then dry with a soft cloth.
Attaching your magnifier to a lanyard can make it easier to find quickly when out and about.
Electronic magnifiers
Electronic magnifiers include video magnifiers or CCTV systems that use cameras to project magnified images on to a screen.
Depending on your needs, these can provide greater flexibility, including adjustable magnification, contrast settings and larger fields of view. These options can also be discussed during your low vision assessment.
Next steps
With professional guidance, appropriate lighting and practise, magnification can become a valuable tool in supporting everyday independence for people with low vision.
For further advice and information:
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Speak to your optician about arranging a low vision assessment.
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Contact RNIB which sells a range of magnification aids in its shop.
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Blind Veterans UK beneficiaries can get in touch with our Member Support Hub for advice and support, or contact their community team.
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