Here is a bit more information about supporting someone with visual impairment.

How do I make contact with a person with visual impairment?

When approaching a person who is blind or visually impaired, initiate the greeting using a normal tone of voice. Identify yourself and then enquire if your assistance is desired. Do not be afraid to ask. Ask the person what they want to do, they may say they want to take your arm for example. Do not grab somebody's arm.

How can I help a person who is blind feel more comfortable in an unfamiliar setting?

It is very helpful and important to describe the surroundings to blind or visually impaired people. Remember to give directions clearly and accurately. Pointing or using phrases such as "over there" will be of no assistance.

Don't hesitate to use the words "see", "look" or "read". Remember that blind and visually impaired people are individuals first. They do the same things as you, but sometimes use different techniques.

You should tell the person who is visually impaired person when they are approaching a door and in which direction the door opens.

Alert the person verbally when they are to walk up or down stairs. Stairs are approached squarely, never at an angle. If necessary, they switch to the side with the handrail.

Stop completely before the stairs. The person who is blind takes hold of the handrail (when available) and finds the first step by siding one foot forward until the edge of the step is detected, steps down (or up) one step and both proceed together in rhythm, the guide always one step ahead.

Stop at the end of the stairs and also verbalise "last step" .

When approaching a chair from the front, bring the blind person in contact with the front of the chair so that the knees lightly touch the seat. Inform them what type of chair it is, e.g. arm chair, desk chair, sofa, etc.

Many visually impaired people use assistive technology, such as voice recognition software to use a computer or ‘phone.

So to reiterate, if you are not sure if someone has seen something or is able to find their own way then ask them!

If someone has a guide dog do not touch it or talk to it whilst it is working.