# Trinh Optometry Group, provider of Eyexam of CA, Chino Hills: an eye care center in Chino Hills (2026 guide) Source: Local AI Registry, https://localairegistry.com/biz/ca/chino-hills/trinh-optometry-group-provider-of-eyexam-of-ca-chino-hills-ca. Free to reuse with a link back. By Steve Lee, founder and CEO of Local AI Registry. Fact-checked against 1 source. Updated 2026-10-23. Owner review: not yet. Canonical: https://localairegistry.com/biz/ca/chino-hills/trinh-optometry-group-provider-of-eyexam-of-ca-chino-hills-ca ## Photos - ![Photo 1](https://localairegistry.com/api/photo?src=https%3A%2F%2Fseoaesthetic-assets.sfo3.cdn.digitaloceanspaces.com%2Fphotos%2Fcmvkdnpt7041hyevm2l23inf0%2F0.jpg) - ![Photo 2](https://localairegistry.com/api/photo?src=https%3A%2F%2Fseoaesthetic-assets.sfo3.cdn.digitaloceanspaces.com%2Fphotos%2Fcmvkdnpt7041hyevm2l23inf0%2F1.jpg) - ![Photo 3](https://localairegistry.com/api/photo?src=https%3A%2F%2Fseoaesthetic-assets.sfo3.cdn.digitaloceanspaces.com%2Fphotos%2Fcmvkdnpt7041hyevm2l23inf0%2F2.jpg) ## In short Trinh Optometry Group, provider of Eyexam of CA is an eye care center in Chino Hills, CA. Its AI Score is 36 of 100, which is poor. Every fact on this page carries one of three marks: Confirmed (from their website, Google Business Profile, review sites, licensing boards, or measured by Local AI Registry), Visitor submitted (added by a person, with a date and how they know), or AI guess (what AI engines like Gemini and ChatGPT are saying, not confirmed by anyone). Every mark points to a reference at the end of this page. ## Key facts | Fact | Value | | --- | --- | | Type | Eye care center | | Address | 13855 City Center Dr Ste 3030, Chino Hills, CA 91709, USA | | Hours | Mon to Sat 10 AM to 6 PM · Sun 11 AM to 5 PM | | Phone | (909) 628-1309 | | Medical director | Nothing found | | Rating | 4.9 across 354 reviews on Google | | Known for | Nothing found | | Prices | Nothing found | | Quietest time | Nothing found | | Parking | Nothing found | | Last verified | October 22, 2026, 7:55 PM | ## All the details Every row is something the owner can add or correct. Each one is marked Confirmed, Visitor submitted or AI guess, with where it came from. | Group | Fact | Value | Mark | Evidence | | --- | --- | --- | --- | --- | | Location info | Address | 13855 City Center Dr Ste 3030, Chino Hills, CA 91709, USA | Confirmed | Google Business Profile, checked Oct 22, 2026 | | Location info | Description | Trinh Optometry Group, provider of Eyexam of CA is the local eye doctor to see for all of your eye care needs in Chino Hills, CA. As your local Chino Hills optometrist, Trinh Optometry Group, provider of Eyexam of CA can help diagnose, treat, and detect subtle changes in your eyes year over year. Come visit our offices at 13855 City Center Dr Chino Hills, CA 91709 and let us help you see and look your best. Our doctors are here to provide the professional eye care near you, to guarantee you have the clearest vision. Call today to schedule an appointment for your annual eye exam. | Confirmed | Google Business Profile, checked Oct 22, 2026 | | Location info | Hours | Mon to Sat 10:00 AM to 6:00 PM · Sun 11:00 AM to 5:00 PM | Confirmed | Google Business Profile, checked Oct 22, 2026 | | Location info | Name | Trinh Optometry Group, provider of Eyexam of CA | Confirmed | Google Business Profile, checked Oct 22, 2026 | | Location info | Phone | (909) 628-1309 | Confirmed | Google Business Profile, checked Oct 22, 2026 | | Hours | Monday | 10:00 AM to 6:00 PM | Confirmed | Google Business Profile, checked Oct 22, 2026 | | Hours | Tuesday | 10:00 AM to 6:00 PM | Confirmed | Google Business Profile, checked Oct 22, 2026 | | Hours | Wednesday | 10:00 AM to 6:00 PM | Confirmed | Google Business Profile, checked Oct 22, 2026 | | Hours | Thursday | 10:00 AM to 6:00 PM | Confirmed | Google Business Profile, checked Oct 22, 2026 | | Hours | Friday | 10:00 AM to 6:00 PM | Confirmed | Google Business Profile, checked Oct 22, 2026 | | Hours | Saturday | 10:00 AM to 6:00 PM | Confirmed | Google Business Profile, checked Oct 22, 2026 | | Hours | Sunday | 11:00 AM to 5:00 PM | Confirmed | Google Business Profile, checked Oct 22, 2026 | | Links | Website | https://doctors.eyeexamsnow.com/optometrists/ca/chino-hills/13855-city-center-dr.html | Confirmed | Google Business Profile, checked Oct 22, 2026 | ## Services and prices Services not read yet, back on Scan Day. ### Known for None of the 5 reviews we've read names a service yet. ## The team Nothing found ## Visiting Trinh Optometry Address: 13855 City Center Dr Ste 3030, Chino Hills, CA 91709, USA. Phone: (909) 628-1309. Hours: Mon to Sat 10 AM to 6 PM · Sun 11 AM to 5 PM. (Confirmed, Google Business Profile, checked October 22, 2026 at 7:55 PM.) ### Location info from Google Business Profile Business description, written by Trinh Optometry on its Google Business Profile: "Trinh Optometry Group, provider of Eyexam of CA is the local eye doctor to see for all of your eye care needs in Chino Hills, CA. As your local Chino Hills optometrist, Trinh Optometry Group, provider of Eyexam of CA can help diagnose, treat, and detect subtle changes in your eyes year over year. Come visit our offices at 13855 City Center Dr Chino Hills, CA 91709 and let us help you see and look your best. Our doctors are here to provide the professional eye care near you, to guarantee you have the clearest vision. Call today to schedule an appointment for your annual eye exam." ### When to go Busy times not read yet, back on Scan Day. ### Parking and getting in Nothing found ### Nearby Nearby places not read yet, back on Scan Day. ## Reputation 4.9 average across 354 reviews: Google 25. (Confirmed, read October 22, 2026.) The practice is noted for its thorough eye exams and modern equipment, but struggles with appointment scheduling and customer service consistency. (AI guess, from 354 reviews.) ### What people like - Thorough eye exams - Modern testing equipment - Attentive staff ### What people do not like - Long waits past the appointment time - Unresponsive front desk - Deceptive pricing for services ### Press No press story about Trinh Optometry found yet. ### Awards None named yet. ### Directories Directory listings not read yet. ## Recent updates from Trinh Optometry Trinh Optometry hasn't posted an update here yet. ## Questions people ask ### bad experiences at Trinh Optometry, anyone? No answer yet ### worth it or not, what do the regulars say No answer yet ### are the injectors here nurses or doctors No answer yet ### Turning up at Trinh Optometry for the first time, what happens? No answer yet ### how rough is the follow up at Trinh Optometry? No answer yet ### financing here, is there any? No answer yet ### never been to Trinh Optometry in Chino Hills, how does it go? No answer yet ### opening hours here, what are they these days? No answer yet ### is there a way to spread the cost here No answer yet ### anything I should sort out before a consult here? No answer yet ### what else is on City Center around this place? No answer yet ### best optometrist in Chino Hills, CA No answer yet ### trying to book here, how long is the wait? No answer yet ### when is this place actually dead? No answer yet ### Ballpark for a visit to an eye doctor in Chino Hills? No answer yet ### Trinh Optometry or Bright Vision? No answer yet ### do I need to leave early to find a space No answer yet ### who should I ask for at Trinh Optometry? No answer yet ### Open on a Sunday here? No answer yet ### On a budget in Chino Hills, is Trinh Optometry the one? No answer yet ## What AI gets wrong about Trinh Optometry We ask Gemini and ChatGPT about Trinh Optometry. These are the answers that disagree with the record. ChatGPT and Gemini, read by Local AI Registry on Oct 22, 2026. No capture has disagreed with the record yet. ## The AI Score: 36 of 100 The AI Score measures how likely AI engines are to recommend a business, and how accurately. Chino Hills eye care centers run 36 to 46. Fair starts at 45, good at 65. Trinh Optometry scores 36, below the Chino Hills average of 39. The same method scores every business on the registry. | Signal | Weight | Score | What it measures | Trinh Optometry | | --- | --- | --- | --- | --- | | Retrieval grounding | 26 | 25 | Whether you appear in the ranked results AI retrieves and cites: AI-Overview citations, organic top-10 for your money queries, and the Bing index ChatGPT leans on. | Poor | | Off-property attestation | 20 | 42 | Volume and consistency of what others say about you: YouTube mentions, branded web mentions, third-party “best-of” lists. The cause of retrievability. | Poor | | AI visibility | 14 | 0 | Whether ChatGPT, Gemini, Perplexity, and AI Overviews name you, and whether they name you for the right service. | Named in 0 of 1 answer that recommended anyone. 1 more named nobody, which is not a loss and is not scored. | | Reviews & response | 12 | 84 | The star average is only one input. We also read volume, velocity, the specificity of review language, and response cadence. Specific reviews are what AI quotes verbatim. | Good | | Backlink & citation authority | 8 | 60 | Domain authority and editorial quality of the sources that attest to you. | Fair | | Google Business Profile | 8 | 84 | Required and recommended fields; update cadence. The listing AI pulls from first. | Good | | Speed & mobile | 7 | 51 | Core Web Vitals at the 75th percentile, on a real phone. | Fair | | Content freshness & schema | 5 | 74 | Crawl recency, intent alignment, valid JSON-LD, canonicals. | Good | Full method: https://localairegistry.com/methodology ## How AI decides what to tell you about an eye care center When you ask ChatGPT, Gemini or Google for a med spa, the AI does not visit each business. It reads what is already written about it: the business website, its Google Business Profile, review sites like Yelp and RealSelf, news stories, licensing boards and directories like this one. Then it repeats what those sources agree on. That is why AI gets small facts wrong. If Yelp says a place is open Mondays and the website says it is not, the AI has to pick one. The table above shows the answers that disagree with the record today. The more sources agree, and the more specific they are, the more confidently AI recommends a business. A review that says "the nurse did half a syringe in my lips and it looks natural" is far more useful to an AI than one that says "great place." ## How to choose an eye care center in California, with or without AI A few checks take ten minutes and matter more than any rating. This is general information, not medical advice. - Look up every injector. Doctors are listed by the California medical board, and nurses and nurse practitioners by its nursing board. Both lookups are free. - Ask who does the injections, and check that person's license. - Ask for the price per unit of Botox and per syringe of filler, not per area. - Read reviews that name a provider and a treatment. Vague praise is easy to fake. - Check that the hours and phone number match on Google, Yelp and the website. Mismatches are how people end up at a locked door. - Ask whether they dissolve filler and when they would tell you not to add more. ## How to read the marks on this page - Confirmed (solid circle): from a known source. The business website, its Google Business Profile, review sites like Yelp, Healthgrades and RealSelf, a licensing board, or measured by Local AI Registry. - Visitor submitted (hollow circle): added or corrected by a person, with the date and how they know, like a phone call or a visit. - AI guess (hollow triangle): what AI engines are saying right now. Nobody has confirmed it. ## About the author Steve Lee is the founder and CEO of Local AI Registry and sets its editorial standards. He is a former Google executive in Search and a former Microsoft executive, with more than 20 years in digital: search, local discovery, and how people find businesses online. He is based in Irvine. - Expertise: search at Google and Microsoft, AI search, answer engine optimization, generative engine optimization, local SEO, structured data and entity mapping. - Industry: medical aesthetics, injectables, med spa operations and marketing. - Disclosure: Local AI Registry sells services to business owners, including Trinh Optometry if it claims this page. That does not change what this page says. Every fact carries its source. ## Entity map Every person, place, organization and treatment named on this page, with a stable ID and a public reference. The JSON-LD below connects them to each other. | Entity | Type | ID on this page | Same as | Relationship to Trinh Optometry | | --- | --- | --- | --- | --- | | Trinh Optometry Group, provider of Eyexam of CA | MedicalBusiness | #business | https://doctors.eyeexamsnow.com/optometrists/ca/chino-hills/13855-city-center-dr.html | Subject of this page | | Chino Hills, California | City | #city | Nothing found | City Trinh Optometry is in | | Local AI Registry | Organization | #publisher | https://localairegistry.com | Publisher of this page | | Steve Lee | Person | #author | https://localairegistry.com/team | Author of this page | ## Topical map Where this page sits in the registry. It's one profile among the eye care centers in Chino Hills, linked to the lists and towns around it. ### Lists - Best eye care centers in Chino Hills: https://localairegistry.com/leaderboards/ca/chino-hills/eye-care-center - Best businesses in Chino Hills: https://localairegistry.com/leaderboards/ca/chino-hills ### Nearby - /los-angeles: https://localairegistry.com/leaderboards/ca/los-angeles - /san-francisco: https://localairegistry.com/leaderboards/ca/san-francisco - /san-jose: https://localairegistry.com/leaderboards/ca/san-jose - /san-diego: https://localairegistry.com/leaderboards/ca/san-diego - /irvine: https://localairegistry.com/leaderboards/ca/irvine - /fresno: https://localairegistry.com/leaderboards/ca/fresno ### Every list - Every leaderboard in California: https://localairegistry.com/leaderboards/ca ## Frequently asked questions ### What is AI search optimization for local business? Getting a business named when a neighbor asks ChatGPT, Gemini, or Perplexity for a recommendation. Some call it AI SEO, some call it generative engine optimization. Traditional SEO fights for ten blue links; this fights for the one answer an assistant says out loud. The AI Score on this page measures the eight signals that drive it. ### What is Local AI Registry? The public record of how AI sees local business. We score every business we list by one published method, we keep the questions people ask about it in one place, and we never sell rank. Looking up any business here is free. ### How does this page help a business get recommended by AI? Assistants read public pages before they answer. This one states what the business does, what people ask about it, and what the Record answers, in one place a machine can read. Correcting what is wrong here changes what an assistant repeats next. ### Who writes the answers here? Registry AI writes the first answer under every question, from the Record and the public sources named beneath it. Neighbors write the rest under pseudonyms. A registered owner can reply as the business, and their reply says so. ### I own Trinh Optometry Group, provider of Eyexam of CA. How do I fix something or rank higher? Register the page. It is free, it takes about five minutes, and it lets you correct the Record and reply as the business. Nothing on this page is for sale, so the only thing that moves the score is the work. ## References ### Sources cited - [1] Google Business Profile, https://www.google.com/maps/place/?q=place_id:ChIJT7_Zy6Uyw4ARMb2bi4DOAgo (accessed Oct 22, 2026)