What is Presbyopia?
When you look at a nearby object your lens curvature changes accordingly and alters the focusing power forming an image. But aging causes a refractive error wherein the ciliary muscle fibres around the lens of the eye lose its flexibility. Further the lens capacity to reshape gets rigid and causes difficulties in changing the focus from far and near vision known as Presbyopia (age related long sight) or aging eye condition. The exact causes are under research and debate.
Sometimes one gets imperative to change presbyopic prescriptions for glasses quite often.
Spectacle independence and presbyopic correction has now become an enhanced vision experience with better refractive satisfaction owing to advancement in ophthalmology and wide array of options.
What are the causes?
One of the major risk factor causing presbyopia is increasing age and it normally occurs around 40 yrs although diabetes, multiple sclerosis or cardiovascular disease can have an early onset prematurely.
What are the symptoms?
You begin to experience difficulty to read small print or sometimes see with blurred vision at normal reading distance, headaches and strain in the eyes to read small print. Normally the need to hold the reading material at one arm length to read is another common symptom. It needs to be identified if these symptoms are due to presbyopia or some other reason.
How is Presbyopia Diagnosed?
Presbyopia is diagnosed through a comprehensive eye examination including the Visual acuity exam, Refraction test and Slit lamp exam according to the suitability of your eye.
What are the Treatment options?
Reading glasses, eye glasses with bifocal lens having variable focusing power and multifocal contact lens are the simplest options. Other common options are surgeries either to enable clear vision at all distances by using presbyopia correcting IOL’s (Intraocular lenses) or to maintain near vision for one eye and distance vision for the other eye using monovision lenses.
What are the commonly available surgical options for Presbyopia correction?
- Laser Assisted Stromal In-situ Keratomileusis (LASIK) – This is a wavefront guided refractive surgery by excimer lasers where the correction is done by reshaping the cornea by creating a flap. It is a customized procedure wherein one eye is reserved for near vision and the other for distance vision enabling you to make the best use of monovision. It is a safe, painless and effective procedure.
- Lens implant– IOLs are implanted according to the suitability of your eye and life style requirement.
- Refractive lens exchange (Clear Lens Exchange) – This procedure is advisable if you have high refractive error. It takes care of near and distant vision as well as cataract occurrence. Here the natural lens is removed and replaced by intraocularlens which provides multifocal vision. The concept is similar to a cataract surgery to remove the cataract but here it’s for refractive purpose. It is suitable in case you are suffering from dry eyes or have thin cornea.
Presbyopia is not a disease but an inevitable part of aging.
It has no cure but it is correctable.
Hence prudent to have a timely eye check up in case you find any of the presbyopic symptoms affect your vision.
Some procedures are undergoing research and trials while some are more frequent and effectively conducted.
To avoid presbyopia complications do get in touch with us for a comprehensive eye examination and obtain the best treatment suitable for your eyes.