What To Expect From a Comprehensive Eye Exam

Eye doctors use a wide variety of tests and procedures to examine your eyes. These tests range from simple ones, like having you read an eye chart, to complex tests, such as using a high-powered lens to visualize the tiny structures inside of your eyes. Regardless, when you have an eye exam, it will usually take anywhere from half an hour to an hour or more, depending on the doctor, his or her caseload and the number and complexity of tests required for your eyes.

What is a Cataract?

A cataract is a clouding of the eye's naturally clear lens. The lens focuses light rays on the retina — the layer of light-sensing cells lining the back of the eye — to produce a sharp image of what we see. When the lens becomes cloudy, light rays cannot pass through it easily, and vision is blurred.

Surgery for Glaucoma

For some people, surgery might be the best treatment for glaucoma. Your ophthalmologist may suggest surgery as a first treatment, or after trying medication to lower your IOP.

There are several different types of surgery for glaucoma. The kind of surgery you and your ophthalmologist decide is right for you depends on many factors, including the type and severity of your glaucoma, and other eye problems or health conditions.

Glaucoma surgery may be performed using a laser (a concentrated beam of light) or conventional surgical instruments.

Diabetic Retinopathy

Diabetic-RetinopathyPeople who have diabetes mellitus do not use and store blood sugar properly and the amount of sugar in the blood will be too high. High blood sugar levels can damage vessels in the retina. This damage is referred to as diabetic retinopathy.


Presbyopia is not truly a refractive error, but is the natural process of the lens losing its ability to accommodate, or change its shape inside the eye.


Blepharitis Blepharitis is a chronic inflammation – a long-term swelling – of the eyelids and eyelash follicles. It may be caused by seborrheic dermatitis, acne, bacterial infection, allergic reaction or poor eyelid hygiene.

Dry Eye

Dry eye occurs when the eyes aren't sufficiently moisturized, leading to itching, redness and pain from dry spots on the surface of the eye.


Floaters are small specks or clouds moving in your field of vision. You often see them when looking at a plain background. Floaters are actually tiny clumps of gel or cells inside the vitreous, the clear jelly-like fluid that fills the inside of your eye. Even though they are actually floating inside, what you see are the shadows they cast on the retina.

Age Related Macular Degeneration (AMD)

Age Related Macular Degeneration Age related macular degeneration (AMD) is one of the most common causes of poor vision after age 60. The visual symptoms of AMD involve loss of central vision. While peripheral vision is unaffected, one loses the sharp, straight-ahead vision necessary for driving, reading, recognizing faces, and generally looking at detail. Imagine being able to see a clock on the wall but unable to make out the time or unable to read because you could not see parts of words on the page.

Pterygium Removal Surgery: Sutureless

Pterygium Removal surgeryA pterygium is an eye condition that results in the growth of abnormal tissue on the surface of the cornea (the transparent window on the front surface of the eye).

News & Features


Welcome Back to all of our Winter Snowbirds!


Dr. Johnson has achieved the "Lifelong Education for the Ophthalmologist Continuing Education Award"! The Award is presented in recognition of his participation in the American Academy of Ophthalmology.


Come in and ask Dr. Johnson about the latest in laser cataract surgery!


We have new electronic prescribing software to make your care and treatment even easier.

Our referral to your friends and family is the greatest compliment you can give.


Surgical Services by Dr. Mark Johnson are available at St. Andrews Surgery Center.


Patricia Vedral, our Licensed Optician, is always there to help you. If you want something we don't have in our shop, please ask her to find it for you as many frames can be ordered.


Welcome Back to all from the North! Let us know how we can help you or do our job better!