Learn about the best ways to correct vision in detail by reading the following article and getting to know the most important information as well. Vision problems vary between nearsightedness, farsightedness and deviation, but there are many special ways to correct vision that refocus light rays on the retina, or adjust the focus on the cornea
.In this article, we will learn about the different methods of vision correction
Eyesight correction methods
There are many ways to correct vision, including the following
1. Eyeglasses
Eyeglasses are one of the easiest ways to correct vision. Eyeglasses focus light rays on the retina. The following is the most important information about them:
Types of eyeglasses
There are two main types of eyeglasses, as follows
Single focus glasses: which are used to correct the vision caused by myopia or long-sightedness, and may be used for reading
Multifocal glasses: which are used in cases of myopia and long-sightedness together, and can be worn when using a computer.
Materials used to make eyeglasses
Eyeglass lenses are made using one of the following materials
plastic.
Polycarbonate.
Trivex which is a new type of plastic.
High-index lenses made of plastic.
Types of protective coatings
There are a number of protective coatings that are used in coating eyeglass lenses to maintain eye health, including the following:
Anti-reflective coating: reduces glare and eyestrain.
Ultraviolet coating: which protects the eyes from the sun''s harmful ultraviolet rays.
Tinted Solar Imaging Coating: Adjusts the tint of the lens depending on exposure to sunlight.
2. Prescription lenses
Prescription lenses are small plastic discs that are placed on the cornea of the eye to correct vision in the same way as eyeglasses. The following is the most important information:
Types of prescription lenses
There are many types of prescription lenses that are considered a way to correct vision, and they are as follows:
Single use lenses: They are used for one day and then discarded.
Daily use lenses: They are used during the day and removed at night, then discarded after a few weeks.
Long-term contact lenses: They are used day and night for a set number of weeks, and then discarded.
Contraindications to the use of prescription lenses
It is worth noting that there are some cases in which the use of prescription lenses may not be suitable, such as:
Presence of medical conditions that increase the possibility of eye infections, such as: allergies or dry eyes.
Not being able to clean the lenses, or not having the time to take care of them.
Inability to touch the eye and the lens inside it.
3. Surgical operations
There are a number of surgeries that are performed with the aim of correcting vision, especially in cases of nearsightedness, which are more successful than others, and the result depends on several factors, including the refractive error.
There are several types of surgeries that are considered ways to correct vision, including the following:
LASIK
LASIK is one of the most common vision correction surgeries, and it is done by creating a flap in the cornea to be lifted to reach the inner layers of the cornea and start forming the cornea after that.
Upon completion of the formation of the cornea, the flap is returned to its place.
Laser-assisted subepithelium keratotomy
This vision correction is done by sculpting the cornea with the help of various techniques to preserve the epithelium layer without creating a flap.
Although there are no complications associated with making a flap, such as: dry eyes, there are some disadvantages of this process, such as:
Recovery takes longer.
The need to wear a contact lens strap for 3 to 4 days.
The need to use steroid s for a longer period of time.
The presence of pain after the operation that exceeds the pain of the LASIK operation.
Laser keratoplasty (PKR)
In this process, the epithelium is scraped instead of creating a flap, and the cornea is then reshaped.
One of the disadvantages of this operation is that it requires a rather long recovery time, as it may cause some inconvenience after the operation.
Small incision lens extraction (SMILE)
This operation is one of the newest procedures for correcting myopia. It uses a precise type of laser that s a disc-shaped tissue inside the cornea that can be removed through a small incision without the need to a flap.
