Choosing the right IOL when considering cataract surgery
April 6, 2023
What’s the difference between Diffractive and non-diffractive EDOF IOLs?
The photo-receptors in our retinas, known as rods and cones, require a lot of energy to function. The bloodstream is not directly connected to them. Behind them are several cells of the retinal pigment layer that take up glucose, which rods and cones then lactic acidize. After that, the pigment layer "drinks" the lactate. If the rods are defective, then the cones begin to die, as well. Is it in solidarity? The greatest economist of all time, Mother Nature, created this lesson from the eye.
Rods and cones, or the photo-receptors in our retinas, need a lot of energy in order to function. Otherwise, they cannot function normally, receiving photons and generating electrical impulses to the brain. This is the “picture” that we see.
Recently, the secret economics governing the inside of our eyes has been revealed.
The eye is not a solar battery and the energy doesn’t come from sunlight. From where, then?
In the retina, blood supplies nutrition, but the proud rods and cones are not connected directly to the bloodstream. There are different cells of the retinal pigment layer immediately behind them, then, to act as an intermediary.
These cells receive the glucose. However, they don’t consume it themselves! Rather, they nobly hand it over to the rods and cones and in that way make ends meet. But how, exactly?
Researchers explain everything in an eLife article. The rods and cones “eat” part of the glucose, and the rest is converted into lactic acid. The pigment layer then “drinks” the lactate.
In other words, the pigment cells give the rods and cones the parts of the cow that they do not eat, and they receive milk in return.
What happens if they are deprived of this “milk”? They then starting eating the “cow” itself. This is bad for everyone, especially the rods and cones.
Thus, one of the perennial mysteries of the eye’s physiology is solved. If the rods are defective, then the cones begin to die, as well. Is it in solidarity?
No! A loss of rods is due to the pigment cells no longer receiving their “milk” and switching to rations – glucose. As a result, all receptors both sick and healthy are deprived of energy.
As you can see, in complex tissues and organs, no man is an island. The survival of any cell depends upon good neighborly relations and “global trade”.
Consequently, it’s entirely possible that some vision problems can be associated with the disruption of the trade balance shared by the various retinal cells.
This is a lesson from the eye, created by the most outstanding economist of all time – Mother Nature.
S.V.
What’s the difference between Diffractive and non-diffractive EDOF IOLs?
We will open up about whether there is at least something beautiful behind these magic words – macular degeneration and diabetic retinopathy. What kind of unpleasant disease lies under such an interesting "keratoconus" and what is the connection with the cone?
Despite the fact that Macular Degeneration considered as a disease of kings, now it affects and leads to blindness not only to a privileged society. The light of hope was received from a group of American ophthalmologists who saved four patients from blindness with a new method that’s described in the Journal of Translational
Medicine.
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Researchers observed a sizable population for 15 years, which demonstrated that the probability of developing macular degeneration was 60% lower in orange lovers than in orange haters. Flavonoids, according to the study's author, are most likely what cause this impact. Numerous authors adore the word "flavonoids" because it is so lovely. However, what are they?
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Genentech has created a new delivery method for medications needed to prevent age related macular degeneration (AMD) called Port Delivery System. It resembles a small grain of rice that goes directly into your eye and time-releases medication. Genius!
