Handheld AR – A useful ophthal device
The top three conditions leading to visual impairment are known to be refractive errors, cataract and glaucoma. As per a study nearly half the population may have some type of refractory error. Most of them are preventable if detected early. This is the reason that several eye check-up campaigns are conducted across the country, especially in schools. Autorefractor is an equipment used for eye examination to an assessment and measurement refractive error. This aids in prescription of appropriate glasses or contact lenses. Table-top Autorefractors (AR) are most commonly used in eye clinics and optical shops. Handheld Autorefractor is also popular in the market and for very good reasons. Let’s look at the advantages of handheld AR.
Lightweight, Fast & Easy-to-use
Unlike tabletop ARs which are kept on a table next to an ophthal chair unit in clinics, handheld autorefractors have the same power but are lightweight, easy to carry, hold and use.
Handheld AR is fast. All measurements can be completed in 10 seconds.
Handheld AR is intuitive, easy to train and use and can be used for all kinds of patients. While desktop AR needs a more cooperative and responsive patient who can sit with their chin on the chinrest, handheld autorefractors are more patient friendly. They can be used for the benefit of patients with mobility issues and/or physical challenges and bedridden patients. Most have fogging lenses for pediatric examinations and pupil camera too.
Sturdy, durable and portable
Most handheld ARs are sturdy and meant to perform while being carried around frequently. Hence they come with a protective carrying case, housing the AR as well accessories such as battery, charging cable, user manuals etc. It can be used indoors as well outdoors in most light settings and can even handle a bit of dusty or humid environment. This is why handheld autorefractor is used for offsite camps as well as within the hospital for bed-bound patients.
Accuracy of handheld autorefractor
Many studies have been conducted to compare performance of handheld autorefractors with conventional desktop ones. Most of them have concluded that the results from both are in agreement. AR studies are often accompanied with and serve as a good starting point for subjective refraction. Handheld autorefractors do accelerate subjective refraction with a more accurate starting point.
Leading models of handheld Autorefractor popular in India are 3nethra Aberro (Forus), Remedio Instaref R-20, QuickSee from PlenOptika, Welch Allyn SureSight, HandyRef-K from Nidek and many others.
A portable but powerful handheld autorefractor can be used in place of a desktop unit as a back-up in case of the main equipment being busy due to higher patient flow. Being portable, it can be helpful in testing patients who cannot come to a desktop AR testing station. A single unit can be flexibly used across multiple facilities and also for camps outside. The versatility and convenience of handheld autorefractor devices make them ideal for tele-ophthalmology services too. All-in-all a handheld autorefractor is a useful device for an eye clinic, hospital or even optical shop.
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