Temperatures too hot for your lenses to handle

Most spectacle lenses are made of plastic. If you went back 30 years, most were then glass. Why the switch? Plastic is a lot lighter, which translates into more comfortable glasses to wear.

Technology continues to improve lens performance with stronger and more durable surface coatings, like Hoya Diamond Finish Anti Reflection Coating, and Hoya Super Hard. Likewise the photochromic performance continues to develop lenses which react faster, both to darken and return to clear, with more colour options. Higher index plastics deliver lighter-weight thinner lenses with improved optical clarity, such as Hoya Nulux Index lenses.

One important consideration for these lenses is watching the temperature. Lens coatings can deteriorate -craze and delaminate - if exposed to heat and to big changes in temperature.

Most lenses can handle 80 degrees, some even hotter. The lenses will be fine with a gradual increase in temperature. Time here is extremely important. If you went from a freezer then directly into a sauna and had a huge increase in temperature in a few seconds then the lenses and coatings are at risk of damage. The same as if you took a glass out of a freezer and then pour boiling water over it, the glass will shatter.

A good rule is if it’s too hot for a person, then it’s too hot for your glasses. Especially important - in a lot of cars there is a glasses compartment above your head near the mirror and interior lights. That is honestly the worst possible place to keep your glasses in summer. It’s right up against the metal roof so the intense heat can, and most likely will damage the lenses.

Read more on every day lens care.

Contact Lenses Delivered Direct to Your Door

Just a reminder that if you are ordering contact lenses, we can, in most cases, arrange to have these delivered directly to your home (or work). Easy. Let us know you need lenses and we will take care of arrangements.

If you find it easier to have your lenses sent automatically to you check out our My Lens program.

What we are wearing - Claire's new glasses

Claire has chosen a Face a Face frame, acetate with a detailed pattern.

Frame: Face a Face Bahia 4 Col 4321

Lens: Hoya Mystyle Profile Detail progressive, 1.67, clear lens with a Diamond Finish anti-reflection coating.

Another acetate (plastic) frame - is this your preference now?

The fit of the Face a Face frame is exceptionally comfortable - this is the 4th pair of these I have had. I do have a very light metal frame (Blackfin) but the acetates are fun.

How do you find the vision?

This new prescription is an improvement for reading - which is appreciated. I am staying with the same progressive design, Detail because I like the clarity. I switch between different pairs of glasses and don’t notice a difference apart from the close range - clearer with the more recent prescriptions. The field of view is easy, and if I am gardening on a steep bank everything seems good.

With all your glasses how do you chose what to wear?

Having different frames is definitely a fun part of being an optometrist. Mostly I coordinate with whatever I am wearing for work. On a day off it is usually less curated! Days off I choose glasses with photochromic lenses - way more comfortable and suits being outside.

NZ Retinal Screening AI to launch

Auckland ophthalmologist Dr David Squirrell is leading the charge to save the eyesight of New Zealand diabetes patients through the development of AI technology.

Along with his team at Toku Eyes, Dr Squirrell has developed artificial intelligence software to help screen for diabetic retinopathy. This is a vital step to preventing visual impairment and irreversible sight loss.

Diabetes is the leading cause of blindness in working age adults, but 40 percent of diabetic patients in New Zealand are still not being screened for diabetic retinopathy.

Toku Eyes hopes to encourage more people to get screened by making the process faster, more accessible, and even more accurate.

Listen to this RNZ interview when Kathryn Ryan speaks with Dr David Squirrell, chair of the Northern Region Diabetic Retinopathy Screening Governance Committee. 

Anna Joplin - Optometrist

Optometrist Anna Joplin will be a familiar face to many of you. Anna is in her third year working alongside Claire and Sally. We asked her to tell us more about herself and her career in optometry.

“My name is Anna, I am Welsh, coming from the fabulous rugby mad capital- Cardiff.

At the age of 7 I was the youngest person my inspirational Optometrist fitted with contact lenses. I loved my appointments and soon became fascinated with eyes. By the age of 10 I had decided I wanted to be an Optometrist.

Soon after qualifying I came to NZ. It was meant to be for an OE, but I still haven't left.

My passion is the patient journey which is so important, for people to feel at ease and informed so they make good choices about their health.”

Anna, Sally and Claire are available for online bookings.

Book an Appointment Online

or call us on 09 425 9646

A Career in Optics

This week is Mahurangi College’s annual Careers night. We are always keen to talk to young people about different careers in optics.

We share information about both working as Optometrists and Dispensing Opticians. Interested? Read on.

OPTOMETRIST

Do you like biology, physics and maths? Do you want to help people? Becoming an Optometrist may be the career for you.

What is an Optometrist?

An eye professional who examines eyes to help fix vision problems e.g. prescribing glasses or fitting contact lenses. An optometrist also diagnoses and manages eye diseases such as glaucoma and cataracts. Optometrists also remove eyelashes, treat eye infections and remove foreign bodies in the eyes!

How do I become an Optometrist?

You need a Bachelor of Optometry (BOptom) from the University of Auckland. Your first year is in the Bachelor of Science degree doing the biomedical science specialisation (like first year students doing medicine). Then you apply for the Bachelor of Optometry degree. Candidates are selected for interviews based on grades, and places offered based on grades & interview. B Optom degree takes 4 further years. Once you have a BOptom you are a fully qualified optometrist (no internship required).

Is optometry all just glasses?

No.  Although prescribing glasses is part of an optometrist’s role, there are multiple specialisations including paediatrics, low vision, behavioural optometry (working with children with learning difficulties and patients with head injuries), sports optometry, hospital optometry and contact lenses.

Do I have to do surgery?

No, optometrists are not medically trained and don’t do surgery. A person who needs eye surgery is referred  to an eye specialist (called an ophthalmologist). Optometrists can treat many other eye conditions with prescription medications. 

What are the job prospects like?

Good. Most graduates succeed in getting a job after university. The population is aging so there is  a greater need for glasses and more eye disease. With a BOptom you can work in New Zealand and Australia.

What is the work/life balance like as an optometrist?

Very good. Regular office hours and the freedom to choose where to live and work.

Qualities of a good optometrist:

Accurate, eye for detail, good communicator, friendly and loves meeting new people, ability to think on your feet, problem solving

DISPENSING OPTICIAN

Are you doing Level 2 Maths? 

Do you want to help people? Are you interested in getting a qualification while you work? Find out about becoming a Dispensing Optician. 

What is a Dispensing Optician?

Dispensing Opticians (DO’s) interpret prescriptions from optometrists and ophthalmologists (eye specialists) for glasses or contact lenses, help people find suitable frames and lens systems, and fit and assemble glasses. DOs are qualified and registered Healthcare Practitioners.

DO’s need up-to-date knowledge of frames and lenses. Technology is constantly changing and new developments are improving what is possible  with frame and lenses.

How do I become an DO?

DO’s train on the job, completing a correspondence course with Open Training and Education Network (OTEN) through TAFE NSW, Australia. Training also includes several block courses (usually held in New Zealand). To achieve the qualification students must have completed 100 hours of work as well.

Where do DO’s work?

DO’s own and operate their own businesses, or work for optometrists or corporate optical outlets. 

Qualities of a good DO

Accurate, eye for detail, good communicator, friendly and loves meeting new people, enjoys teamwork, problem solver. 

Want to know more?

Contact us if you would like to find out more about this career choice. We are happy to offer work experience visits. We can help you find training opportunities if you think a career in Optics is appealing.