Diagnostics Health

The timing of a cataract operation should be tailored to the individual’s visual requirements. Some will need and want their cataract removed sooner than others. For example if the person wishes to continue to drive then a cataract will need to be removed when it is still relatively mild. Early surgery may also be appropriate if the cataract is affecting the individual’s ability to perform their job safely and effectively, or if it is spoiling the enjoyment of their hobbies and past times. However if the person has less demanding visual requirements then it may be appropriate to leave the cataract until it is more advanced. The decision to operate or not should be based on the particular circumstances and wishes of each patient. There are not fixed rules about the timing of surgery.

Each individual should consider how much difficulty their cataract is causing them. Their optometrist or doctor may have spotted some cataract but if the patient is having no vision problems then surgery is probably not needed. Cataract on it own is rarely harmful to the eye. Sometimes the patient may be aware of impaired sight but can cope safely with all their needs

Let’s not try to portray too negative an image of laser eye surgery. Undoubtedly, you will be going in with eyes wide open and aware of the risks involved and by the time you are in the operating chair, you will have weighed up all the pros and cons and will be happy with your decision. Here are some of the associated risks which could occur:

• vision loss
• visual symptoms
• regular follow ups as a result of under or over treatment
• dry eyes
• diminishing results

Let’s examine the risks in a little more detail. Always keep in mind the success of this procedure is very high but the following can occur in some instances.

Under or over treatment is an interesting side effect and this is usually a frequent occurrence. What this means is perfect vision without the aid of visual aids only occurs in a small percentage of patients. Further post operative treatment may be required while if a patient wore glasses before the surgery, there is a strong chance they will still be required to wear them after the procedure.

Visual problems such as loss of vision and

By becoming more educated about the harmful effects of UV rays on the eyes, you will be better able to choose quality sunglasses that are capable of providing lasting protection to you from the irreversible damage to your vision that can result from prolonged exposure to the sun.

Prescription sunglasses are specially designed for people who need vision correction to see clearly while also providing protection from the sun’s rays. Many sunglass companies now make stylist, fashion-conscious sunglasses that also require a prescription.

Prescription sunglasses are designed to protect the user from the harmful ultraviolet rays of the sun. However, polarized lens can provide added protection for the eyes from glare that occurs when light is reflected off flat surfaces such as water or snow. Another great choice is photo-chromatic sunglasses because they have the ability to darken in the sun yet lighten automatically when you go indoors.

Until recently prescription sunglasses were not available in a wrap-around style. The curvature of the lens would cause vision distortion. Now with new technology, prescription sunglasses are available with wrap-around making them very fashionably.

If you require custom-made prescription sunglasses, be aware that they will cost

Anyone with reduced vision is visually impaired, and can have problems functioning, ranging from minor to severe difficulty. There are two general classifications of low vision in use today:

• partially sighted – visual acuity that with conventional prescription lenses is still between 20/70 and 20/200 (a person with 20/70 eyesight must be 20 feet away to see clearly an object that a person with 20/20 eyesight can see clearly from 70 feet away);
• legal blindness – visual acuity that cannot be corrected to better than 20/200 with conventional lenses and/or the patient has a restricted field of vision less that 20 degrees wide. (Note that some definitions of “partially sighted” include the legally blind.)

Low vision impairments take many forms and exist in varying degrees. It is important to understand that the visual acuity alone is not a good predictor of the degree of the problem a person is having. Someone with relatively good acuity (e.g., 20/40) can be having a very hard time functioning, while someone with worse acuity (e.g., 20/200) might not be having any real problems doing the things that they want to do.

The common types of low vision are: