Just another Sleddoggin.com Blogs weblog

Archive for October, 2009


Laser Eye Surgery And Dry Eyes

Los Angeles eye surgeonEveryday, a large number of people live with an actual, medical condition referred to as dry eye. When an person’s eyes don’t generate a sufficient amount of tears to maintain adequate lubrication, dry eye occurs and there are many ways people experience this condition depending on the individual. Los Angeles eye surgeons explain that individuals with dry eye may experience a feeling of scratchiness in the eyes, a burning sensation, large amounts of mucous, sensitivity to wind and smoke, and increased light sensitivity. Oddly, individuals with dry eye may also experience excessive tears as the lacrimal glands, which produce tears, try to compensate for the lack of lubrication.

Laser-Assisted in Situ Keratomileusis, also known as Los Angeles Lasik eye surgery, is a procedure to correct vision in patients who experience myopia or nearsightedness, hyperopia or farsightedness, and astigmatism.

Among most people who undergo this surgery by a qualified, experienced Lasik surgeon Los Angeles patients end up with 20/20 vision or better without complications, however, LASIK can sometimes leave some patients with dry eye. This is especially true if the patient had dry eye prior to the surgery. In those cases, candidate screening was inadequate and the surgery should not have been done.

During Beverly Hills Lasik eye surgery, the surgeon cuts a thin corneal flap so the cornea can be reshaped underneath the flap using a laser. Creation of the flap inevitably cuts some of the corneal nerve fibers related to tear production. The lacrimal glands are beneath the upper eyelids and just below the eyebrows. They produce tears which flow through a drainage system and flush debris from the eyes. When these nerves are disrupted by flap creation, tear production is reduced and this happens in all Lasik procedures. In most cases the nerves regenerate within a few months and tear production becomes normal. In the meantime, moisturizing eyedrops are prescribed.

Usually dry eyes are a disqualifying condition for Lasik. But an eye surgeon will assess each individual and make a judgment call. It can be treated or managed. Prescription eyedrops can help. Your eye surgeon may insert plugs into the tear duct openings (the puncta; singular is punctum). These openings are in the inner corners of the eyes and allow tears to drain from the eyes into the nasal passages. Punctal plugs reduce tear drainage to keep the eyes better lubricated. Special lubricating drops may also be prescribed for people with mild dryness prior to Lasik surgery to minimize potential complications.

When considering Lasik eye surgery, be sure to inform your Lasik surgeon of your medical history, including any previous diagnosis of dry eye, as well as medications you are currently taking. This will help the surgeon provide you with the most effective, comfortable post-op experience possible. To find out if you are a candidate for Lasik eye surgery, the first step is to contact an experienced Lasik surgeon to learn more.

Which Laser Eye Correction Treatment Is Best For Me?

Los Angeles eye surgeon

The most popular variation of laser treatment is called Lasik (for “laser in-situ keratomileusis”). In this technique, the Los Angeles eye surgeon applies the laser upon the cornea, rather than near the corneal surface. This is accomplished by creating a protective flap in the front 20-25% of the cornea and then applying the laser treatment to the tissue beneath the flap. This protective flap can be made with a laser or with a keratome.

The vision correction treatment can also be applied near the surface of the cornea (instead of under a protective flap), in which case the technique is referred to as Advanced Surface Treatment, or “Lasik without a flap”. This technique has several minor variations, which include PRK (for “photo-refractive keratectomy”), Lasek, and Epi-Lasik.

In PRK, the thin layer of soft tissue coating the outside of the eye (the epithelium) is removed and the Beverly Hills Lasik surgeon applies the laser energy to the firm tissue underneath.

In Lasek-with an “e”-the soft tissue on the surface is replaced after the laser treatment. In Epi-Lasik, this thin layer of soft material is folded back using a machine. PRK, Lasek, and Epi-Lasik are very similar to each other.

When the laser treatment is applied to the tissue deep within the cornea (as in Lasik) instead of near the surface (as in Advanced Surface Treatment), the healing is quicker with more rapid vision recovery. Patients usually see quite well the next day after a Los Angeles Lasik treatment. In “Lasik without a flap” the intial healing takes about a week. However, after the healing period is complete, the results are the same with each of these techniques.

Lasik requires an additional surgical step, which is the creation of the protective flap. The flap is created with an instrument known as a keratome or with the IntraLase laser. Creation of the flap takes about 15 seconds and is virtually painless. Complications with the flap occur about 1% of the time. Almost all of the complications are mild and can be easily treated, often by lifting or repositioning the flap. The most serious complication would involve improper creation of the flap; when this occurs, the patient is asked to wait three months, and then can return for a repeat treatment.

With either Beverly Hills Lasik or “Lasik without a flap”, there are two types of computer software that can be used, known as conventional and Custom. Both of these use the same laser to perform the vision correction treatment. The conventional software works like glasses or a contact lens; there is one prescription that covers the entire eye. Obviously, this produces excellent vision, just as do glasses and contact lenses. With Custom treatment, an additional modification is made in the treatment to account for additional irregularities in the vision. On average, the Custom treatments produce slightly better vision than the conventional software.

At the Caster Eye Center, we perform all of the variations of laser vision correction. All of the variations produce excellent vision. During your consultation, we will obtain measurements of your eyes, and Dr. Caster will personally talk to you and determine which procedure is the best for your specific situation. In this careful way, we obtain the best vision possible for our patients.