I. Definition of RGP glasses
RGP glasses are hard oxygen permeable corneal contact lenses, which contain polymers such as silicon and fluorine that can greatly increase the amount of oxygen passing through. Compared with soft contact lenses, it not only improves oxygen permeability, but also ensures the solidity of the material and has good wettability and anti-sedimentation properties.
Second, the use of RGP glasses
RGP glasses have been clinically proven by domestic and foreign ophthalmologists for many years to control and correct the treatment effect of youth true myopia and cone cornea. Due to the synthesis and application of polymer materials with high Dk value, high elastic modulus, hydrophilic, anti-precipitation and good biocompatibility, rigid corneal contact lenses have been rapidly popularized around the world.
Third, the characteristics of RGP
1.Safety
Highly oxygen-permeable lens surface is anti-precipitation and does not collect foreign matter inside, which is not easy to contaminate and effectively reduces eye complications.
2.Therapeutic
Unique lens shape design, its lens stress can flatten the corneal refraction, control myopia deepening, stable lens tension and cornea to form a good liquid film layer, can effectively eliminate corneal astigmatism.
3.Comfort
The patented aspheric design of the peripheral part of the lens ensures a soft environment with good circulation of tears, which makes it more comfortable to wear than soft contact lenses for a long time.
Fourth, the advantages of RGP
1, RGP has a high oxygen permeability, the lens has mobility, greatly reducing eye complications, high safety.
2, RGP has some control over the deepening myopia.
3, RGP has a good correction effect on refractive amblyopia, especially amblyopia caused by high myopia, astigmatism, refractive aberration, etc.
4.RGP has a good correction effect on highly irregular corneal astigmatism and astigmatism caused by trauma, etc.
5.RGP has an ideal correction effect on high refractive error.
6.RGP can be used for the control and treatment of early and middle cone corneas.
Five, RGP adapted to the crowd
1, RGP glasses sufficient oxygen supply can guarantee the health of the eye cornea. Suitable for.
People with high refractive error.
Astigmatism up to 2.50D, and can not be equipped with toric lenses.
Long wearers and those who wear them for long periods of time on a daily basis.
Those who are not suitable for soft contact lenses due to stubborn lens deposits or inflammation.
2. In special cases, the good corrective vision performance of RGP contact lenses can correct.
Patients with mildly conical corneas.
Patients with aphakic eyes (those who cannot implant IOLs after cataract surgery)
Patients with mild dry eyes
3, RGP hard contact lens adaptation period is slightly longer than soft lenses, generally about one to two weeks
Sixth, RGP is not suitable for people
People who work in acidic or alkaline and dusty environments.
Excessively timid, neurotic and psychotic patients.
Poor living habits. Those who have restricted occupational environment in sloppy households.
Patients with eye allergy, chronic blepharitis and acute ocular surface inflammation.
Pterygium and other causes of uneven corneal surface.
VII. RGP adverse reactions and treatment
1. Initial symptoms such as foreign body sensation, congestion, lacrimation and fluctuating vision may occur after the first wearer wears the lens, but the symptoms will gradually disappear as time passes. Possible adverse reactions include corneal epithelial staining, corneal edema, conjunctival congestion, etc. It needs timely treatment.
2. To prevent, reduce and eliminate the occurrence of complications.
Lenses should be worn and cared for in strict accordance with the instructions for use.
A drop of antibiotic should be ordered after lens removal for the first two weeks of wear. Other medications may be prescribed by the doctor depending on the patient’s condition.
If you feel uncomfortable with the lenses, you should remove them and first check if there is any contamination or scratches on the lenses, or if there is dust in the eyes, etc. If there is, they should be cleaned or treated before wearing them, if not, you should stop wearing them and consult or see your doctor or optometrist.
When you are not feeling well (such as cold, diarrhea, etc.), suspend wearing.