Perspective Core Hub — legal
Cookie Policy
This page explains how cookie files are used on Perspective Core Hub, which categories of cookies a visitor may encounter, and how to change or withdraw a choice at any time. It is a plain explanation, not marketing copy.
Last updated 15 October 2026
The short version first
Perspective Core Hub is an educational site about refractive and corrective laser surgery. It does not run a patient account area, it does not process payments, and it does not sell anything. Because of that, the cookie footprint is small and mostly technical: keeping the site loading reliably, measuring which pages about techniques and platforms people actually read, and remembering the choice you make in the consent notice.
- Strictly necessary
- Cannot be switched off; the site breaks without them.
- Analytics
- Help us see which guides are read and where people leave.
- Advertising
- Set only if you accept them, and only where our pages are advertised.
- Your choice
- Editable at any time through the consent notice on the site.
What cookies are and why a site like ours uses them
- A cookie is a small file a site stores in your browser.
- Some are required for the site to load at all.
- Others are optional and only run after you agree.
- No cookie on this site identifies you by name.
A short definition
A cookie is a text file that a website asks your browser to keep. When you return to the same site, the browser sends the file back, which lets the site remember that the last visit was yours. The file usually holds a short identifier and a few settings, not the content of the page and not your medical information. Similar storage such as local storage and session storage works in much the same way, and this cookie policy covers those too, because a visitor should not have to distinguish between them.
Perspective Core Hub writes about refractive techniques and platforms for readers in Indonesia, and most of the site is plain reading: guides, comparisons, and explanations of what a procedure involves. A reading site still needs cookies for a few practical reasons, which is why this page exists rather than a single sentence saying that we use cookies.
First-party and third-party
First-party cookies are set by Perspective Core Hub itself. On this site they do the administrative work: remembering your consent choice so the notice does not reappear on every page, and keeping your session stable while you move between a comparison of procedures and a guide about recovery. None of them describes you as a person and none of them is shared as a profile.
Third-party cookies are set by services loaded on our pages, such as a measurement service that counts visits or an advertising network that shows our pages to people searching for refractive surgery. Those providers act under their own policies and see only the technical signals their services require. Our pages do not run a login area and do not pass any health information to those services, because we never ask for it in the first place.
You can read how information is stored and handled in the Privacy Policy, which explains the wider picture.
Cookies on this site
The categories we use
Each row below describes one category, what it does in practice, and how long it typically stays on your device. Where a row is marked required, the site cannot function without it; the optional rows wait for your agreement.
| Category | What it does | Set by | Typical lifetime | Your control |
|---|---|---|---|---|
| Strictly necessary | Keeps your session stable, applies your consent choice, and protects forms from misuse. Without these, pages may fail to load or repeat the consent notice. | Perspective Core Hub | Session, up to 12 months | Required. Cannot be switched off. |
| Analytics | Counts visits and shows which guides about techniques, platforms and recovery are read, so we can keep the useful pages useful. | Measurement service | Up to 24 months | Optional. Enabled only after you agree. |
| Advertising | Helps show our educational pages to people searching for corrective laser surgery, and limits how often the same page is shown to one person. | Advertising network | Up to 13 months | Optional. Refused by default. |
| Preferences | Remembers a display choice such as a collapsed table on a comparison page, so the layout stays as you left it. | Perspective Core Hub | Up to 12 months | Optional. Clearing them resets the layout. |
Lifetimes are the usual maximum; many are shorter and some are cleared when you close the browser.
Changing or withdrawing a choice
Your decision is not permanent. Withdrawing consent stops new optional cookies from being set, and clearing the ones already stored removes them from your device.
-
1
Use the consent notice
The notice that appears on the site lets you accept optional categories, refuse them, or keep only the required ones. Reopening it and changing a switch takes effect straight away; you do not need to contact us to do it.
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2
Clear cookies in your browser
Every common browser has a settings page for stored site data, usually under privacy or history. Removing all cookies for this site resets the consent choice, so the notice will ask again on your next visit. Blocking cookies entirely is also possible, but the consent notice may then reappear more often.
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3
Use private browsing when you prefer it
Private or incognito windows discard stored data when you close them. Reading a guide on refractive techniques that way leaves nothing behind on the device, at the cost of some layout settings being forgotten between visits.
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4
Adjust device-level limits
Mobile operating systems and some browsers offer a broader setting that limits tracking across sites. Turning it on covers this site as well as others, though the exact wording differs by platform and version.
What cookies on this site are not used for
Cookies on this site do not carry clinical information about your eyes, they do not record what you discussed with a clinic, and they do not decide anything about your suitability for a procedure. Suitability is a clinical judgement made during an examination, and no file in a browser can change that. If you later contact a clinic, the information you share there is handled under that clinic's own privacy rules.
Analytics here are read as totals rather than as individual profiles: which pages about platforms or recovery are opened, roughly how long a reader stays, and where a visit begins. That is what tells us whether an explanation of a technique was clear enough to finish, and it is why we keep the measurement modest rather than exhaustive.
Advertising cookies, when you allow them, are used to place our educational pages in front of people searching for corrective laser surgery. They do not give us your identity, they do not hand us your search history, and they do not let us contact you. If you refuse them, the site keeps working exactly as before.
Where to look in your browser
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Privacy or site settings
The list of stored cookies per site, with a remove option for each entry.
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History and stored data
Clearing site data here resets consent for every site you visited, including this one.
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Private or incognito mode
Sessions close clean; nothing stays on the device once the window is shut.
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Browsing extensions
Some tools manage cookies or block trackers on your behalf; they apply per browser profile.
Menu names differ between browsers and versions, so the exact path may read slightly differently on your device. The effect is the same either way: stored cookies for this site can be removed whenever you want.
The reading comes first, the tracking stays behind it
Perspective Core Hub exists so a reader in Jakarta, Bandung or Surabaya can compare modern refractive techniques before ever booking an examination. Measurement helps us see which explanations land, and it is kept in the background for that reason alone.
Questions visitors ask about cookies here
Short answers to the points that come up most when people read a cookie policy on an educational health site.
Do I have to accept cookies to read the guides?
No. Every page is readable with only the required cookies, and refusing the optional categories changes nothing about the text you can open. The site simply keeps its own layout settings for the current visit instead of remembering them.
Do cookies hold anything about my eyes or a past consultation?
No. This site does not run a patient portal and does not collect clinical records, so there is nothing of that kind for a cookie to store. What stays in your browser is technical: a consent choice, a session identifier, and anonymous visit counts.
Will refusing analytics break a comparison table?
No. Comparison pages and procedure guides are static content, so they render the same whether measurement is on or off. Refusing analytics only means we cannot see aggregate numbers for your visit.
How will I know if this policy changes?
The date at the top of this page is updated whenever the categories listed here change. If a new category is introduced, it appears in the table with its purpose and lifetime, and the consent notice asks for a fresh decision before anything optional runs.
Who do I ask if something here is unclear?
Write to us and we will explain the point in plain words. Use the Contact page for our email address and working hours, or send the question through the form there.
Related documents and where to continue
This cookie policy works alongside the other legal pages on the site. If you came here from a guide and want to get back to the subject itself, the reading pages are listed below as well.
Questions about this policy
Ask us directly and we will answer in plain words, in English, during office hours.
- Address
- Jl. Cikini Raya No. 58, Menteng, Jakarta Pusat, DKI Jakarta 10330, Indonesia
- [email protected]
- Phone
- +62 21 5189 4276
- Office hours
- Monday to Friday, 09:00–18:00; Saturday, 09:00–13:00
Perspective Core Hub · cookie policy · updated 15 October 2026