Diagnosing color blindness and correction glasses

Color blindness can be a tricky condition to diagnose at first due to the nature of it. How are you supposed to know you are color blind if you have never seen any colors for real? It can be hard to diagnose in adulthood, but one way to tell early on is if a person in childhood is having trouble with learning at school. Due to the fact that teaching requires the use of color, the reason for a pupils lack of learning may be due to color blindness.

Of course there can be various other reasons, but this can be a pointer that a visual defect is at fault. Apart from this, someone you spend time with may point out your errors with labelling certain shades of colors. You may point out that they’re the one who is wrong, when in fact you’re the one with color blindness.

Eye specialists named ophthalmologists can test your color vision to see if you can see normally or not.  This is usually done with eye equipment and special color charts. You can read more on this at colorblindcorrectionglasses.com/ which also has an interesting article about specialised glasses that can temporarily correct color blindness.

If an eye doctor does find an issue with color deficiency, more in-depth testing will be carried out to diagnose which type of color blindness you could be dealing with. There are many different types which vary in degree and in the number of colors you can see on the spectrum. For instance, this can range from only seeing black and white to being able to see yellows and blues, but not reds and greens. Enchroma glasses as shown here colorblindcorrectionglasses.com/enchroma-review/ can correct the second types of color blindness, but not the first.

People can often work around being colorblind through various means other than color correcting glasses. For example, instead of being hindered by not telling the difference between red and yellow traffic lights, color blind people can tell which light is which by looking at the positions. Obviously there are limitations still however, as different countries position their lights in different places.

Fortunately you can still drive with color blindness, but may have a restricted license that allows you only to drive in the day time. This is due to the fact that your visual judgement can be impaired. This should not impact your life much though, as your eyes can still see everything else normally, especially with the use of enchroma glasses if you own a pair.

LASIK, LASEK & PRK

People often wonder when looking into laser eye surgery, what’s the best and safest type? In our opinion LASEK is by far the optimal procedure. It’s affordable, effective and quick.

LASEK and PRK both involve removing the epithelium in order to gain access to deep cornea tissue. LASIK instead creates a thicker cornea flap. LASEK has the slowest recovery time of the 3 procedures, with the other two being fairly quick.

The epithelial layer is replaced during LASEK, where PRK removes the layer fully before allowing it to grow back naturally. PRK is the cheapest of the few, with the other 2 being similar in price.

LASIK typically takes much fewer days to see results, with PRK taking a few weeks and having an increased risk of undesirable outcomes such as eye infection and inflammation. 

LASIK is usually the most sought after treatment due to its efficiency, recovery time, decreased risk of problems and fast surgery time. It’s the obvious first choice for anyone seeking laser eyesight correction. However, if the cornea is too thin the other two may be suitable for the patient still due to different methods of correcting the vision.

 

 

 

LASIK eye surgery in a nutshell

LASIK eye surgery

This extremely effective procedure uses a laser to change the shape of your cornea to gain results that often exceed the limitations of  contact lenses. With adjustments to the shape of the cornea, LASIK can quickly and painlessly correct the most common refractive errors such as astigmatism, nearsightedness and  farsightedness. If you’re looking for LASIK surgery in Sacramento then here’s a good place to look www.tallulahgrace.com/lasik-eye-surgery-sacramento-ca/.

Customised and standard LASIK

You have possibly heard of custom LASIK as opposed to standard LASIK. All that the word “custom” refers to is that your procedure is guided by information beyond your eye prescription.

eye surgery

Standard or traditional both treat everyone in the same manner by simply reshaping the cornea to the patient’s prescription. By not taking into account each patient’s corneal curve, the first generation lasers often caused night vision problems such as halos. This also happened to cataract surgery patients. If you’re looking to get cataract surgery performed by a great surgeon, take a look at this place http://www.tallulahgrace.com/best-cataract-surgery-kansas-city/. Thanks to innovators in laser vision correction, there are now many improved options available for patients.

What to consider

It’s important to keep some things in mind when considering LASIK:

  • What is the experience and skill level of the surgeon?
    If a surgeon isn’t qualified the risk of possible issues with your surgery increases and you could have complications
  • What technology is used?
    Technology is critical in order to have the best possible day and night vision, safest procedure and optimal outcome.
  • Is a laser or a blade used?
    An all-laser procedure gives better outcomes and lower incidences of flap complications.

During the Procedure

An outpatient procedure, this generally takes only a few minutes per eye. The surgeon begins the eye surgery by applying anesthetic eye drops to ensure pain free comfort during the procedure.

Using the laser, the surgeon creates a thin flap near the surface of the cornea. This flap is gently lifted for access to the corneal tissue underneath, which is reshaped with an excimer laser. Using a previously created corneal “map” as a guide, the eye doctor removes, predetermined amounts of tissue with the laser, then carefully replaces the flap to complete the procedure.

After the procedure

Patients who have a LASIK procedure can usually return to functional and normal levels of vision fast. Within the first 24 hours, you should see fairly well, with most patients somewhere between 20/60 and 20/10. If you live in Michigan, look here for a Michigan LASIK eye surgeon http://www.tallulahgrace.com/best-lasik-eye-surgery-michigan-cost/. You can expect to return to work within 24 to 48 hours following the LASIK procedure. Final results are usually seen after 3 to 5 months.

Eye conditions and surgery that can correct them

Hyperopia

This condition, allows clear distance vision but objects nearby appear unclear. The usual cause of this is a cornea that’s too flat which impact the way light enters the eye from close objects.

Blurriness or difficulty focusing on nearby objects is a common sign of this condition. Also, many people with farsightedness experience eye strain, aching or burning eyes, and headaches when reading or trying to focus on close-by objects.

LASIK and PRK can be used to treat hyperopia.

 

Myopia

People with this condition are able to see close objects clearly, but have trouble viewing objects that are farther away and often appear blurry. Nearsightedness is caused by light entering the eye being focused incorrectly, usually because the cornea (the covering over the front of the eye) is excessively curved or the eyeball itself is too long.

Myopia is estimated to affect nearly 30 percent of the U.S. population, making it one of the most common eye problems. Visual stress (particularly eye strain caused by reading or other up-close viewing) and genetic inheritance are believed to be the primary causes of this condition.

Both LASIK and PRK can be used to treat myopia.

 

Astigmatism:

This very common condition causes blurry vision, and may accompany either farsightedness or nearsightedness. Astigmatism is caused by an irregularly shaped cornea or, in some cases, improper curvature of the lens inside the eye. Vision becomes blurred at any distance due to light not focusing correctly on the retina.

Astigmatism is mostly hereditary, but this refractive error also may result from an eye injury, certain types of eye surgery, or from keratoconus (see below). Slight astigmatism may not be noticeable, but larger amounts can cause blurred vision along with headaches and eye discomfort.

Both LASIK and PRK can be used to treat astigmatism.

 

Keratoconus:

This disorder causes a gradual thinning of the cornea. The cornea actually becomes cone-shaped, distorting and blurring vision because light entering the eye is improperly focused on the retina. People with keratoconus also tend to experience increased sensitivity to glare and light.

Initial symptoms are often first noticed when people are in their late teen years or mid to late 20s. Over time, as thinning of the cornea progresses, vision becomes increasingly distorted.

Thinning of the cornea will continue with this disorder, so treatment with Intacs Intrastromal Corneal Ring Segments (ICRS) allows for reshaping of the cornea from within.