Professor Tom H Williamson

MD MBChB, FRCS(Glas), FRCOphth

Consultant Ophthalmologist and Vitreoretinal Specialist

Cookie Policy

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How we use cookies

A cookie is a small file which asks permission to be placed on your computer’s hard drive. Once you agree, the file is added and the cookie helps analyse web traffic or lets you know when you visit a particular site. Cookies allow web applications to respond to you as an individual. The web application can tailor its operations to your needs, likes and dislikes by gathering and remembering information about your registered account(s) and preferences.

We use traffic log cookies to identify which pages are being used. This helps us analyse data about web page traffic and improve our website in order to tailor it to customer needs. We only use this information for statistical analysis purposes and then the data is removed from the system.
Overall, cookies help us provide you with a better website, by enabling us to monitor which pages you find useful and which you do not. A cookie in no way gives us access to your computer or any information about you, other than the data you choose to share with us.

You can choose to accept or decline cookies. Most web browsers automatically accept cookies, but you can usually modify your browser setting to decline cookies if you prefer. This may prevent you from taking full advantage of the website.

Cookies used

Necessary (1)

Necessary cookies help make a website usable by enabling basic functions like page navigation and access to secure
areas of the website. The website cannot function properly without these cookies.

Name: __cfduid
Provider: datatables.net
Cookie purpose description: Used by the content network, Cloudflare, to identify trusted web traffic.
Type: HTTP
Expiry: 1 year

Marketing (9)

Marketing cookies are used to track visitors across websites. The intention is to display ads that are relevant and
engaging for the individual user and thereby more valuable for publishers and third party advertisers.

Name: GPS
Provider: youtube.com
Cookie purpose description: Registers a unique ID on mobile devices to enable tracking based on geographical GPS location .
Type: HTTP
Expiry: Session

Name: VISITOR_INFO1_LIVE
Provider: youtube.com
Cookie purpose description: Tries to estimate the users’ bandwidth on pages with integrated YouTube video s.
Type: HTTP
Expiry: 179 days

Name: YSC
Provider: youtube.com
Cookie purpose description: Registers a unique ID to keep statistics o f w h at videos from YouTube the user has seen
Type: HTTP
Expiry: Session

Name: yt-remote-cast-installed
Provider: youtube.com
Cookie purpose description: Stores the user’s video player preferences using embedded YouTube video
Type: Pixel
Expiry: Session

Name: yt-remote-connected-devices
Provider: youtube.com
Cookie purpose description: Stores the user’s video player preferences using embedded YouTube video
Type: Pixel
Expiry: Persistent

Name: yt-remote-device-id
Provider: youtube.com
Cookie purpose description: Stores the user’s video player preferences using embedded YouTube video
Type: HTTP
Expiry: Persistent

Name: yt-remote-fast-check-period
Provider: youtube.com
Cookie purpose description: Stores the user’s video player preferences using embedded YouTube video
Type: HTTP
Expiry: Session

Name: yt-remote-session-app
Provider: youtube.com
Cookie purpose description: Stores the user’s video player preferences using embedded YouTube video
Type: HTTP
Expiry: Session

Name: yt-remote-session-name
Provider: youtube.com
Cookie purpose description: Stores the user’s video p layer preferences using embedded YouTube video
Type: HTTP
Expiry: Session

Unclassified (2)

Unclassified cookies are cookies that we are in the process of classifying, together with the providers of individual
cookies.

Name: yt.innertube::nextId
Provider: youtube.com
Cookie purpose description: Unclassified
Type: HTTP
Expiry: Persistent

Name: yt.innertube::requests
Provider: youtube.com
Cookie purpose description: Unclassified
Type: HTTP
Expiry: Persistent