Vision care principles
Is there evidence that supports the DOT Glasses approach to vision care?
We have worked with many optometrists, ophthalmologists, eye care clinics and eye care hospitals. While all of them prefer providing perfect vision solutions provided by an optometrist or eye care professional, there is a general consensus that providing “good enough” vision is a good alternative to improve vision acuity when there is no possibility to get a proper eye exam, either because of cost or access.
Can a “good enough” prescription damage someone’s vision?
This was our first question to ourselves when we started developing the DOT Glasses “radical” solution, so we spoke to dozens of optometrists/ophthalmologists and researched the topic extensively. The experts agree that the variance to perfect vision (i.e. good enough vision) in the DOT Glasses solution will not worsen a customer’s eyesight and will not harm a customer.
For instance on the websites of the Mayo Clinic in the U.S. and of one of the largest German optical manufacturers Zeiss, it is unequivocally stated that neither overcorrection nor undercorrection can damage the eyes. However, in the case of children and young people, more caution is needed.
We do recommend that once a customer has access to an optometrist, that a proper vision screening is performed. Poor vision can be the consequence of a disease (such a diabetes), and a proper eye care specialist will be able to address the primary cause of poor vision.
Are DOT Glasses suitable for young children?
Although our frame sizes could be used for children as young as 5, we believe our product is best suited for children 8 years or older. This is more due to the testing procedure, and the ability of a child to properly participate in the vision assessment. There are cases when a child simply wants glasses, or wants to please an adult with the “right” answer, which can lead to an incorrect assessment. In addition, children below the age of 9 have a risk of developing “lazy eye” and hence should be examined by a vision care specialist.
How do you deal with astigmatism?
Our solution corrects for spherical errors, not cylindrical errors (i.e. astigmatism) as correcting for astigmatism would significantly complicate the supply chain and potentially prevent delivering the solution to some areas. However, there are two important factors to consider:
Most incidences of astigmatism are relatively minor (it’s a natural curve, which means the vast majority of customers will have “zero” or “very minor” cylindrical errors). On average, only 7% of people with refractive errors have astigmatism, and most of that will be “very minor”.
A prescription that corrects for spherical error can sometimes be adjusted to compensate for some of the cylindrical error (“spherical equivalent”). Although our assessment doesn’t cover astigmatism, the fact that people select the lens that works the best for them, also allows them to compensate as needed to find a lens that works best.
What do you do if someone has a cataract?
Although most of our vision entrepreneurs don’t have much training to identify eye disease, they are usually able to identify a cataract. In this case, and in any other case in which someone complains of poor vision and is not helped by our lenses, we’ll provide them the contact to the nearest eye clinic and recommend that they make the effort to have a consultation with an optometrist. We will also refer patients with other, non-refractive error eye problems to a specialist.