How could the weight of the glasses be reduced for elderly patients?

NECESSARY ADAPTATION FOR THE USE OF ASPHERIC AND ATORIC LENSES

The adaptation of the aspheric and atoric lenses should be easily acceptable for all first-time eyewear patients or patients who are satisfied with the slight curvature at the base, the thinner lens and the less peripheral distortions in the aspheric and atoric lenses.

Unfortunately, some patients who have worn a spherical correction for too long, have become accustomed to the distal lines on the periphery of the lens and the brain is adapted to correct the distorted lines. Therefore, the brain needs to be readapted when they are gone. Once the patient gets used to the lens and they are correctly and accurately centered, the vision will become much better. It is only a matter of time, which is different for each patient. Warning the patient about the adaptation period is compulsory so that they do not have negative repercussions.

DESIGN OF HIGH-CONCAVE OPHTALMIC LENSES

The high-concaves were most commonly used before the correction of cataract with intraocular lenses. Currently they are rarely used but are necessary for high hypermetropy, as well as aphakic eye surgery.

If they are used in one section, it is recommended that the diameter is as little as possible, as well as using a large aspheric lens to reduce the thickness. However, for corrections above +8.00 dioptre, lenticular lenses are recommended which are made up of a stand in which a ruff is placed, including a small diameter lens.

The lens in the middle of the lenticular lens may be spherical or aspherical.

Advantages of lenticular lenses are reduced thickness, reduced weight, good optical correction and sharpness in aspheric lanticulars and the possibility of embedding each type of frame (metal, thin frames).

A disadvantage of the lenticular lenses is the small field of vision and appearance. Although the passage is made to be gradual, the appearance is like an egg on the eye where the central part is more prominent and looks like an egg yolk.

The novalent is a new technology of high-plus lenses where the diopter from the lenticular holder climbs gradually to the strongest zone in the center. That way, the sight is better, the transition is milder and the border is less noticeable.

optometrist Marija Kosturanova