Not yet recruitingNAINTERVENTIONAL

Study in Young Adults to Understand How Glasses With a Small Reading Addition Affect Focusing and Eye Coordination During Vision Tasks

Are you a young adult who wears glasses and sometimes feels eye strain when reading or looking at screens? This study wants to find out if certain types of glasses, designed to give your eyes a little extra help for close-up tasks, can make a difference. We're looking for healthy people aged 18-35 to help us understand how these special glasses affect how your eyes focus and work together. You'll try three different pairs of glasses over several weeks and complete some eye tests and questionnaires. The goal is to see if these glasses can improve comfort and reduce eye strain for daily activities like reading or using your phone.

At a glance

Status

Not yet recruiting

Phase

Sponsor

Essilor International

Enrolment target

Start

01 Sep 2026

Estimated completion

01 Aug 2027

Healthy Young Adults Accommodation Disorder

What is this study about?

This research study is all about understanding how your eyes work when you're doing close-up tasks like reading a book, using your phone, or working on a computer. Many young adults, even those with good vision, sometimes feel their eyes get tired, strained, or uncomfortable during these activities. This study aims to explore if a specific type of glasses, which provides a small amount of extra support for your close-up vision, can help reduce these feelings and make your eyes feel more relaxed.

Researchers want to compare two different designs of these special glasses. They'll assess how each pair affects how well your eyes focus and how smoothly they work together. By doing this, they hope to learn which type of glasses, if any, could be most effective in improving comfort and reducing eye strain for people who spend a lot of time on near-vision tasks.

Your involvement would help us gain important insights into how different glasses can support eye health and comfort in young adults. This knowledge could eventually help eye care professionals give better advice and solutions to people experiencing similar eye discomfort. This study is not about treating an illness, but about understanding and improving everyday visual comfort.

Key takeaways

This study explores if special glasses can ease eye strain from close-up work.
It's for healthy young adults (18-35) who wear glasses regularly.
You'll try three different pairs of glasses, each for about 4 weeks.
You'll have eye tests and fill out questionnaires about your comfort.
The study lasts around 3-4 months in total.
Your participation helps understand how to improve everyday visual comfort.

Who may be eligible?

To take part in this study, you need to be a healthy young adult between 18 and 35 years old. You must wear glasses regularly, for at least six hours a day, and be comfortable speaking and understanding English. Your current glasses prescription for distance vision should be within a certain range, and you should not need glasses for reading (meaning you're not 'presbyopic'). You also need to spend a lot of your day doing close-up activities, like reading or using screens, for at least six hours during the week.

There are some reasons why you might not be able to join. For example, you can't be pregnant or breastfeeding. You also can't take part if you have certain eye conditions (like severe glaucoma or a very dry eye), or if you've had surgery for cataracts. If you currently wear or have worn special 'anti-fatigue' glasses or lenses with a 'boost' before, or if you ever see double, you wouldn't be able to join either. The study also cannot include anyone who has severe health problems affecting their brain or balance.

Could this study suit you?

Answer these quick questions to see if you may be eligible. This is a guide only — the research team makes the final call.

Are you between 18 and 35 years old?
Do you wear glasses for at least 6 hours a day?
Do you spend at least 6 hours on close-up activities (e.g., reading, screens) on weekdays?
Are you able to understand English and give your consent?
Are you not pregnant or breastfeeding?
Do you *not* have a severe eye condition or severe dry eyes?

Answer every question to see your result.

What does participation involve?

If you decide to take part, you will first have an eye exam to check your vision and make sure you fit the study criteria. Over the next few months, you'll be given three different pairs of study glasses, one at a time. You'll wear each pair for about four weeks. During these weeks, you'll continue with your usual daily activities, wearing the study glasses for at least six hours a day.

Throughout the study, you'll come in for several appointments. At these visits, you'll have eye tests to see how well your eyes are focusing and working together. You'll also be asked to fill out questionnaires about how comfortable your eyes feel, if you're experiencing any strain, and your overall vision quality. The entire study will last for a total of around three to four months.

Potential risks and benefits

Taking part in this study could help us learn more about how to improve comfort for people who spend a lot of time on close-up tasks. You might find that some of the study glasses make your eyes feel more comfortable or reduce strain. However, there's also a chance you might not notice any difference, or in rare cases, you might feel some mild, temporary discomfort while wearing a new pair of glasses, such as needing a short time to adjust. All eye tests are standard and safe. You are free to withdraw from the study at any time, for any reason, without it affecting your medical care.

Locations (1)

City St Georges's, University of London
Verified postcode
London, United Kingdom

Common questions

What kind of glasses will I be wearing?

You'll wear three different pairs of glasses, each designed to give a small amount of extra help for close-up vision. They are not like traditional reading glasses but are meant to support your natural focusing.

Will I need to change my daily routine?

No, you'll continue with your normal daily activities, like reading or using screens, but you'll wear the study glasses for at least six hours each day during the times you're assigned a pair.

How many times will I need to visit the clinic?

You will have a screening visit and then several follow-up visits over the course of the study, each lasting about an hour or two. The exact number will be explained by the study team.

Do I get to keep the glasses?

No, the glasses provided for the study are for research purposes only and will need to be returned at the end of each four-week period or at the end of the study.

Will I get paid to take part?

The information provided does not mention payment, but you should ask the study team if there is any compensation for your time or travel expenses.

How to find out more

Miriam Conway, PhD

miriam.conway.1@city.ac.uk +44 20 7040 8392 Official trial record

Always speak to your GP or specialist before deciding to take part in a study.