I’m a bit obsessed with prism glasses, and the two things that come to mind when I think of them are: How much better they look on the inside than outside, and how much less likely they are to break when they fall.
In the US, prism glasses are the subject of a lot of heated debate over whether they are a distraction or a source of health problems.
They’re also a subject of the latest research, which suggests that prism glasses might actually reduce the risk of eye problems in some people.
So how much better are they than the alternatives?
First, let’s consider what the scientific literature says about prism glasses.
A study published in the Lancet on December 15, 2017 found that a small number of prism glasses had been found to improve visual function in people with mild vision impairment.
Those people were then asked to wear them for a few days.
“After the intervention, we saw that the people who wore prism glasses for longer periods had significantly lower levels of eye damage,” the researchers wrote.
The researchers found that “a small number” of prism-glass glasses had improved vision in the patients, and those with severe vision impairment were “significantly more likely” to see a benefit.
It’s worth noting that the researchers did not use prism glasses to assess whether they actually improved people’s visual functioning, but instead assessed whether they were effective for some people with certain types of vision problems.
The results were fairly consistent: There was a benefit from wearing prism glasses even for people who had mild vision impairments, and they had no effect on people with severe sight impairments.
It appears that the benefits were mostly due to people using prism glasses longer than five days.
This is a good thing because it allows people with vision problems to continue to use prism lenses even if they have to wear glasses for a short period of time.
As a side note, there is some evidence that prism lenses may help to reduce the amount of blood in the eye that is lost during eye surgery, which may reduce the severity of vision loss.
In a study published earlier this year in the Journal of the American Ophthalmology Society, researchers looked at the effects of two types of prism lenses on the visual function of people with retinitis pigmentosa, a degenerative eye disease that affects the retina.
The lenses used were different types of polychromatic lens.
The types of lenses used in this study are the polychromic type, which includes polychromal lenses with lenses that have two or more different wavelengths of light.
In other words, there are two types: one that contains light wavelengths of red and green, and one that has a light spectrum of blue and yellow.
The two lenses used to evaluate the effects were the prism type and the prism-type, which are usually called the prism and prism-chromatic lenses.
The type of lens used in the study varied depending on the person’s age and eye size.
A woman in her 20s with retinal degeneration who had normal vision but moderate visual acuity and vision loss, for example, was given two different types (one of which was a polychromate and one of which contained blue and green lenses).
After a week of wearing prism lenses for five days, the patient saw improvements in her vision, the researchers reported.
The study did not measure the effects on vision quality, but the researchers noted that the patients had a “significant improvement in overall visual acitivity and in the severity and frequency of the eye lesion.”
A small study published this month in the journal Frontiers in Optometry found that prism-screen glasses reduce the visual aches and pains that people with low vision experience.
The participants in the small study wore prism-framed glasses for six weeks, and their visual acumen improved.
However, when researchers compared the results of this small study with a study from the same group published in September 2016, they found that the study participants’ vision did not improve at all.
The authors suggested that “it is possible that the small sample size was due to a small proportion of the participants being under the age of 25, which is not likely to have influenced the observed changes in vision.”
The authors also suggested that the lack of changes in the visual field was a possible explanation.
In both the small and the large study, prism-based lenses reduced the symptoms of mild to moderate vision loss that people experience after retinal surgery.
The small study also found that wearing prism-equipped glasses for more than six weeks improved the visual performance of the patients with vision loss caused by retinal disease, and people with moderate vision impairment did not experience any benefit from prism-free glasses.
In addition, a small study that was published in October 2017 found no benefit from using prism-compatible glasses to reduce symptoms of moderate to severe vision loss in people who have vision problems caused by eye surgery.
It also found no benefits from using the lenses for less than three months, or if the glasses were used for less time than