Various causes of decreased vision and how to treat them

Most of us have had an eye condition and have  visited a professional eye doctor or ophthalmologist. Some of these conditions may subside on their own and some require the close follow up and treatment by an ophthalmologist or eye doctor.

 Whether your vision has always been blurry, or you recently developed blurry vision, there are many options available to try to restore clear vision and maintain your eye health at optimum levels.

Causes of decreased vision:

The most popular causes of decreased visual clarity or acuity that affect most people around the world are myopia (short sightedness), hyperopia (farsightedness), and astigmatism. Most people seek professional ophthalmologist advice to follow up and treat these conditions.

Myopia: in this condition you can clearly see close objects while father objects are unclear and blurred. This results from eye conditions that lead to the focus  of convergent light rays in front of the retina instead of on it causing the blurring.

Hyperopia : in this condition near objects are blurred while farther objects appear clearer . this is caused by the convergent light rays entering the eye focusing behind the retina, causing decreased visual clarity and poor concentration during near work.

Astigmatism: this occurs when the convergent rays in the eye gather into numerous irregular foci in front or behind the retina or a mixture of both. It may be caused by corneal irregularity or less commonly due to a tilt in the lens of the eye 

All these errors of refraction can be easily detected by your eye professional or ophthalmologist during a routine eye exam. Your doctor may use various instruments and ask you to look through different lenses to test the condition, whether myopia, hyperopia, or astigmatism.

  These conditions are easily treated by contact lenses or glasses. Some persons may feel uncomfortable with these options and resort to vision correction procedures otherwise known as refractive surgeries.

Refractive surgeries:

These procedures decrease the need for glasses and / or contact lenses. Your ophthalmologist has various options to use including lasers to reshape the cornea to correct the error,  and upon a careful examination he will be able to tell you whether you are a candidate for these  procedures or not. 

A few examples of these surgeries include:

Intraocular lens implantation:

 these artificially made lenses are inserted into the eye between the cornea and the iris, or directly behind the iris. They act very similar to contact lenses and can only be surgically inserted or removed. These mainly correct myopia.  

LASIK

 in this surgery the shape of the cornea is altered using a special form of laser and the price range varies from center to center, and depends on numerous factors such as center costs, anesthesia costs and surgeon fees

FemtoLASIK

 FemtoLASIK in Egypt  is becoming the popular trend  nowadays. It is very similar to traditional LASIK surgery but instead of micro blades a femtosecond laser is used to create and  elevate the surgical flaps, and another laser is used to reshape the cornea

عن الطبيب

أستاذ طب و جراحة العيون م. طب عين شمس أستشاري جراحات تصحيح عيوب الابصار و المياه البيضاء و القرنية عضو الجمعية الامريكية لعلاج العيون و تصحيح العيون بالليزر زميل المجلس العالمي لجراحة و طب العيون زميل الكلية الملكية لطب و جراحات العيون بأنجلترا

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About the doctor

A consultant specializing in corneal, cataract and Glaucoma Surgery and Refractive surgery in Egypt, Assistant Professor of Ophthalmology – Ain Shams University, Consultant cornea, cataract, and Glaucoma Surgery and Refractive Surgery, Fellow of the Royal College of Physicians and Surgeons of Glasgow, UK.

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