Tag Archives: blur

The Smudged Contact Lens

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smudged-contact-lens
The contact lens rests on the cornea (see anatomy of the eye)

Blurred vision due to smudge on the contact lens?

There are many causes of blurred vision.  Sometimes, the eye doctor needs to update the power of the contact lens.  At other times, there may be an eye disorder that requires diagnosis and treatment by an ophthalmologist.  However, a smudged contact lens may be the problem.  To find out, remove and inspect the contact lens for a smudge.  

What are the causes of a smudge on the contact lens?

Many things may cause a smudge on the contact lens.  A factory defect is rare and the contact lens specialist usually detects damaged lenses prior to dispensing.  Makeup, creams, oils, or moisturizers on your fingers may cause the contact lens to be smudged.  A moisturizer in your hand soap may cause blurred vision by smudging the lens.  

What can be done to prevent smudges on the contact lens?

Proper contact lens maintenance and hygiene is important.  Follow all instructions given by your contact lens provider to the letter.  Make sure to wash your hands with hand detergent without moisturizers prior to inserting your contact lenses.  This is very important to keep your lenses clear and free of germs that can cause serious infection.

How do you remove a smudge from a contact lens?

The management of a smudged contact lens depends, in part, on the type of contact lens you wear.  If you use daily-wear contact lenses, it may be best to dispose of the smudged contact lens and replace it with a new lens.  When wearing lenses made to wear for longer than a day, carefully clean them daily by following the manufacturer’s recommendations. 

Rigid gas-permeable lenses are made for long-term use.  If they become smudged, gently rinse them with conditioning solution or a cleaning solution.  If this fails, an enzymatic cleaner may help.  Follow all instructions on the contact lens product recommended by your doctor.  Professional polishing is available by your contact lens provider.    

Where do I go for urgent care? 

If you have pain while wearing your contact, remove it immediately. If your eye remains blurred after you remove the contact lens, you may have a damaged cornea.  Make a prompt appointment with your eye doctor.  If you have pain or persistent foreign-body sensation (a feeling like sand in the eye), notify your eye doctor without delay.  If you are unable to contact your eye doctor and there is significant pain and/or loss of vision, report to the hospital emergency department urgently. 

By Scott E. Pautler, MD

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Vitreous Hemorrhage

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Eye
Vitreous is the gel that fills the eye (click on image to enlarge)

What is vitreous hemorrhage?

Vitreous hemorrhage means blood has leaked into the vitreous gel of the eye. The vitreous is a clear gel that fills the center of the eye and helps to hold the retina in place against the eye-wall like wallpaper in a room. The retina is a thin layer of delicate nerve tissue, which acts like film in a camera. In the eye, light is focused onto the retina, which “takes the picture” and sends the image to the brain. The retina has many fine blood vessels, which sometimes leak blood into the vitreous and cause a loss of vision.

What symptoms does vitreous hemorrhage cause?

Vitreous hemorrhage usually causes many new floaters in the vision. Floaters may appear as round specks, hair-like or bug-like debris, or clouds moving in your vision as though they were in front of your eye. They are more noticeable when looking at a blank surface and may interfere with the good vision in the fellow eye.

Flashes are brief streaks of light that are usually seen off to the side, especially at night when you turn your head or eyes. Flashes are caused by vitreous gel pulling on the retina with eye movement.

Although many people have occasional floaters or flashes of light, the sudden onset of many new floaters with or without flashes is an important sign of abnormal pulling on the retina by the vitreous. In some people with these symptoms, the retina may tear and detach resulting in loss of vision.

What causes vitreous hemorrhage?

There are many causes of vitreous hemorrhage. Diabetes can cause vitreous hemorrhage by weakening the blood vessels in the retina and by causing the vitreous gel to shrink and pull on the retinal vessels. Hardening of the arteries in the eye can cause vitreous hemorrhage by blocking a retinal vein where the arteries cross over the veins in the retina. Ageing changes of the vitreous gel can cause it to pull on the retina and tear it. The tearing of the retina may result in bleeding into the vitreous. Less common causes of vitreous hemorrhage include birthmarks inside the eye, inflammation, trauma, tumor, surgery, blood disorders, and macular degeneration.

How is vitreous hemorrhage treated?

The most important step is to have a thorough eye examination with ultrasonography. The ultrasound machine uses sound waves to safely and effectively “look through” the blood in the vitreous to see if the retina is attached. If a retinal detachment is found, surgery (scleral buckle, pneumatic retinopexy, and/or vitrectomy) is required in an attempt to repair it. If no retinal detachment is found on ultrasound exam, your doctor may allow the vitreous hemorrhage to clear on its own with time. The ultrasound exam may be repeated periodically to assure the retina remains attached. In many cases the cause of the vitreous hemorrhage cannot be determined until the hemorrhage has cleared. If the hemorrhage does not clear on its own, vitrectomy surgery as a one-day surgery in the hospital operating room may be considered. The amount of visual return depends on several factors including the health of the underlying retina.

What should I be on the lookout for?

After examination or treatment for a vitreous hemorrhage, you should notify your doctor if you have a burst of new floaters, a loss of side vision, or pain. Sometimes, retinal tears or a retinal detachment occur at a later date after the examination.

By Scott E. Pautler, MD

For a telemedicine consultation with Dr Pautler, please send email request to spautler@rvaf.com. We accept Medicare and most insurances in Florida. Please include contact information (including phone number) in the email. We are unable to provide consultation for those living outside the state of Florida with the exception of limited one-time consultations with residents of the following states: Alabama, Arkansas, Connecticut, Georgia, Minnesota, and Washington.

Copyright 2016-2022 Designs Unlimited of Florida. All Rights Reserved.

Uveitis

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globe anatomy
anatomy of the eye (click on image to enlarge)

What is uveitis?

Uveitis (pronounced, “you-vee-EYE-tis”) is a general term used to describe inflammation inside the eye. The uvea is the name given to the layer of tissue in the eye that has a brown color (melanin pigment) and blood vessels, which serve to provide blood supply and protect the eye from excessive light. The uvea can be divided into separate parts, which perform different functions in the eye: the iris, the ciliary body, the pars plana, and the choroid. The part of the uvea in the front of the eye is called the iris (the round, blue or brown part of the eye that you can see in the mirror). Behind the iris is the ciliary body, which produces the fluid that fills the eye. The pars plana serves as the boundary between the ciliary body and the choroid. The back part of the uvea that lies under the retina (the “film” in the eye that “takes the picture”) is called the choroid. Therefore, in any one patient uveitis is usually given a more specific name depending on where most of the inflammation is located in the eye. For example, inflammation of the iris is called iritis. When inflammation is mainly in the central vitreous gel of the eye, it is called intermediate uveitis.

What causes uveitis?

Uveitis may be caused by infection, injury from trauma, disease in the body outside the eye, or sometimes for unknown reasons. Infection by a virus, bacteria, fungus, or other parasite may cause uveitis. Infections may be limited to the eye or may involve other organs as well. In other cases uveitis is caused by inflammation without infection. For example, arthritis, multiple sclerosis, lupus, and inflammatory bowel disease may cause uveitis. Uveitis commonly occurs following an injury to the eye. In some cases, no underlying cause can be found to be the cause of uveitis. Very rarely, cancer may cause uveitis. Tobacco may be an aggravating factor and should be discontinued.

What are the symptoms of uveitis?

Various symptoms may be experienced depending on where is uvea is most inflamed. Symptoms may be mild or they may be severe and disabling. The eye may be painful, red, tearing, and light sensitive. Tiny floating spots which move or “float” may be seen. Sometimes blind spots, blurred vision, distortion, or loss of side vision occurs.

How is uveitis managed?

To effectively treat uveitis it is important to find the underlying cause whenever possible. Take some time to carefully review and report to your doctor any unusual or unexplained symptoms (see uveitis questionnaire) such as rashes, inflamed tattoos, back and joint problems. Tell your doctor if you have been exposed to TB (tuberculosis), traveled abroad, spent time in rural settings, or may be exposed to animals or infections. Heredity may also play a role. You should tell your doctor about any family members with inflammatory disorders anywhere in the body. Also, review and report your ancestry (for example, Asian, Mediterranean, or American Indian ancestry). When the doctor diagnoses uveitis, laboratory tests may be ordered to help determine its cause. Occasionally, a surgical biopsy is needed for diagnosis.   If infection is found, antibiotics are prescribed. To limit the damage from inflammation, uveitis is treated with anti-inflammatory medication in the form of eye drops (steroid and non-steroid), eye injections, and/or systemic therapy (pills or injections into the skin). When systemic therapy is used, the eye doctor frequently coordinates medical care with the expert assistance of a rheumatologist. Rarely, surgery is required to treat uveitis. In some cases, uveitis may be long-lasting. In these cases, years of therapy are needed to preserve vision. Uveitis is a serious eye problem and may result in loss of vision or blindness. However, by seeing your eye doctor and taking the medications exactly as recommended, damage to your vision can be minimized.

In some cases, uveitis can return at a future date. Therefore, if you become aware of symptoms of uveitis in the future, do not hesitate to contact your doctor.

By Scott E. Pautler, MD

For a telemedicine consultation with Dr Pautler, please send email request to spautler@rvaf.com. We accept Medicare and most insurances in Florida. Please include contact information (including phone number) in the email. We are unable to provide consultation for those living outside the state of Florida with the exception of limited one-time consultations with residents of the following states: Alabama, Arkansas, Connecticut, Georgia, Minnesota, and Washington.

Copyright © 2016-2023 Designs Unlimited of Florida. All Rights Reserved.

Posterior Capsular Opacity (secondary cataract)

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Cataract
Cataract is a foggy lens inside the eye (click image to enlarge)

 

PCO
Opacity of the posterior capsule after cataract surgery (Click to enlarge)

What is posterior capsular opacity (PCO)?

Posterior capsular opacity is a common condition in which the posterior capsule becomes hazy after cataract surgery. The posterior capsule is the clear layer of tissue that supports the intraocular lens, which is implanted into the eye at the time of cataract surgery. Over time after cataract surgery, the posterior capsule may lose its clarity.

What causes posterior capsular opacity?

The posterior capsule becomes opaque because of an abnormal growth of hazy tissue, like scar tissue, grows over the clear posterior capsule. These cells are remnants of cells from the cataract. Research is underway to determine what might be done to prevent PCO from developing.

What are the symptoms of posterior capsular opacity?

The symptoms of PCO are very similar to symptoms from cataract: blurred, cloudy, hazy vision with or without glare from oncoming lights, especially at night. These symptoms usually develop slowly, although sometimes the problem is discovered suddenly if the other eye is a clear seeing eye. In these cases, the clear eye is covered and the cloudy vision is discovered in the eye with PCO.

How is posterior capsular opacity treated?

If the vision is good and the symptoms are mild, no treatment is needed and the PCO will not harm the eye. If improvement in vision is needed, YAG laser can be performed in a brief, pain-free treatment to open the posterior capsule to allow for improvement in vision. If the vision does not improve after YAG laser, a change in glasses may be needed or further examination of the eye may disclose other problems limiting visual return.

By Scott E. Pautler, MD

For a telemedicine consultation with Dr Pautler, please send email request to spautler@rvaf.com. We accept Medicare and most insurances in Florida. Please include contact information (including phone number) in the email. We are unable to provide consultation for those living outside the state of Florida with the exception of limited one-time consultations with residents of the following states: Alabama, Arkansas, Connecticut, Georgia, Minnesota, and Washington.

Copyright © 2014-2022 Designs Unlimited of Florida. All Rights Reserved.

Cataract

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Cataract
Cataract is a foggy lens inside the eye (click image to enlarge)

What is a cataract?

A cataract is a foggy lens inside the eye. The lens is positioned behind the iris to focus light that passes through the pupil (see drawing above). The lens inside the eye works like a lens in a camera. The normal lens is clear, but it may lose its clarity over time. When the lens loses its clarity, it causes hazy and cloudy vision, often with glare from on-coming lights. The distance vision is often affected more than the near vision.

What causes cataract?

Cataract is common with age. The older a person becomes, the more likely cataracts will form. Other causes include heredity (family history of cataract), inflammation, blunt injury to the eye, sun exposure, tobacco, high blood pressure, diabetes, and medications (such as corticosteroids (prednisone) and some anti-depressants known as SSRI inhibitors).

How is cataract treated?

The only treatment of cataract is surgery in the operating room, with or without the assistance of laser. There is no way to remove a cataract with vitamins, pills, or eye drops. However, a change in glasses may minimize the blurred vision caused by cataract in the early stages. There is no emergency to treat a cataract. It will not harm the eye to hold-off from having surgery except in extremely severe cases. At the time of cataract surgery, a lens implant will be placed inside the eye to improve the ability of the eye to focus.

When is surgery needed?

Surgery is needed when the haziness in the vision from cataract has become bad enough to require improvement in vision that cannot be achieved with glasses. This is a decision made by the patient with help from the doctor.

By Scott E. Pautler, MD

For a telemedicine consultation with Dr Pautler, please send email request to spautler@rvaf.com. We accept Medicare and most insurances in Florida. Please include contact information (including phone number) in the email. We are unable to provide consultation for those living outside the state of Florida with the exception of limited one-time consultations with residents of the following states: Alabama, Arkansas, Connecticut, Georgia, Minnesota, and Washington.

Copyright  © 2014-2022 Designs Unlimited of Florida.  All Rights Reserved.

Ocular Toxoplasmosis

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globe anatomy
anatomy of the eye (click on image to enlarge)

What is ocular toxoplasmosis?

Ocular toxoplasmosis is an inflammation of the eye caused by an infection of the retina by a parasite called Toxoplasma gondii. The retina is a thin layer of delicate nerve tissue that lines the inside wall of the eye like the film in a camera. In the eye, light is focused onto the retina, which “takes the picture” of objects you look at and sends the image to the brain.

What causes ocular toxoplasmosis?

Toxoplasma gondii infects humans and animals throughout the world. Twenty to fifty percent of adults in the United States test positive for exposure, but few people experience symptoms. The most common presentation resembles mononucleosis with symptoms of fever, fatigue, and swollen lymph glands. Because the toxoplasma organism can become inactive and form a protective microscopic cyst within human cells, it can cause relapses of infection and spread to new areas of the body months to years after the initial infection. If the parasite spreads through the blood stream to the eye, ocular toxoplasmosis may threaten blindness.

How is toxoplasmosis contracted?

The most common ways to contract infection are as follows: 1.) Hand-to-mouth transmission of the toxoplasma organism in cat feces e.g. cleaning the litter box. 2.) Eating undercooked meat, chicken, or eggs from infected animals. 3.) Eating unwashed fruits and vegetables that are contaminated by animal feces. 4.) Hand-to-mouth transmission from handling infected raw meat or animal products. 5.) Transmission from infected mother to child through the placenta during pregnancy. 6.) Rarely, Toxoplasma infection may acquired through contaminated drinking water or dust in the air.

Toxoplasma gondii completes its life cycle by producing millions of oocysts (eggs) in the intestines of the cat. These infectious eggs leave the cat in the feces and may lie dormant in the ground for up to two years. These eggs may infect an animal that may eat from the ground or a human who eats unwashed, contaminated fruits and vegetables from the ground. Once inside a human or animal, the eggs “hatch”, multiply, and spread throughout the body. When the immune system attacks the parasite, it becomes dormant and “hibernates” inside cells throughout the body. In months or years in the future, it may become active to cause infection again.

What are the symptoms of ocular toxoplasmosis?

If toxoplasma reaches the eye, early symptoms include seeing new tiny floating spots (floaters), pain, redness, tearing, light sensitivity, and blurred vision. Late symptoms include permanent blind spots in the vision and, rarely, blindness. These symptoms are not specific for ocular toxoplasmosis, but they are especially important to recognize in people with known toxoplasma scars in the retina. If such symptoms are promptly reported to the doctor, treatment may minimize permanent damage to the eye.

What treatment is available?

Sulfa antibiotics (Septra or Bactrim) are frequently used for several weeks to treat active infection. In some cases of toxoplasmosis, another antibiotic called clindamycin is used. This medicine may rarely cause a severe bloody diarrhea, which should be reported to the doctor immediately for effective treatment. Prednisone pills and similar eyedrops may be used to decrease inflammation. Rarely, antibiotics may be injected into the eye.  Often, the pupil of the eye is dilated with eyedrops during the active infection to prevent scarring and to relieve pain.

It is not uncommon for untreated ocular toxoplasmosis to result in loss of vision. It is rare to experience serious side effects from medication used to treat toxoplasmosis. Armed with the knowledge to report side effects promptly to the doctor, you can minimize the chance of suffering from any permanent ill-effects from treatment.

Finally, notify your doctor if you had a toxoplasma infection in the past as it may be important to avoid intraocular steroid injections to prevent a return of infection.

By Scott E. Pautler, MD

For a telemedicine consultation with Dr Pautler, please send email request to spautler@rvaf.com. We accept Medicare and most insurances in Florida. Please include contact information (including phone number) in the email. We are unable to provide consultation for those living outside the state of Florida with the exception of limited one-time consultations with residents of the following states: Alabama, Arkansas, Connecticut, Georgia, Minnesota, and Washington.

Copyright © 2014-2022 Designs Unlimited of Florida.  All Rights Reserved.

Central Serous Retinopathy

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central serous retinopathy
anatomy of the eye (click on image to enlarge)

 

What is central serous retinopathy (CSR)?

Central serous retinopathy (also known as central serous chorioretinopathy) is an abnormal leakage of clear fluid under the retina, which causes symptoms of blurred vision often associated with a round or oval dark spot in the central vision. The retina is a thin layer of delicate tissue in the back of your eye, which lines the inside wall like the film in a camera. The retina “takes a picture” of objects you look at and sends the message to the brain.

What causes central serous retinopathy (CSR)?

The exact cause of CSR has not been well-defined. Classically, it occurs in middle-aged people with type-A personality and who are often under stress at home or work.  However, anyone may be affected regardless of age, personality type, and level of stress. Individuals with type-A personality are perfectionists who often feel pressured by time constraints. Research suggests that hormones released under stress can affect the blood vessels beneath the retina (in the choroid). These vessels may leak an abnormal amount of fluid, which then works its way under the center of the retina. Far-sighted eyes are more commonly affected than near-sighted eyes.  

What other things can aggravate central serous retinopathy (CSR)?

A host of factors may aggravate CSR. Sometimes, medical conditions (Cushing’s Syndrome, systemic lupus erythematosus, polycystic ovary disease, sleep apnea), medications (pseudephedrine, prednisone/cortisone/steroid by mouth/cream/injection/spray, OTC medication for the common “cold”, OTC nasal sprays, diet pills, muscle relaxants, and medications for erectile dysfunction), and other agents (testosterone, cocaine, caffeine, niacin, amphetamines, estrogen blockers, etc.) may contribute to the development of CSC. Rarely, CSC may be triggered by pregnancy, or by a viral infection or bacterial infection. Intense exercise has been implicated, as well. Indeed, anything that causes emotional or physiological stress in the body, including intense fasting, may contribute to the development of CSC.

What are non-medical treatments of CSC?

In many cases, the symptoms will disappear with time. Over a period of weeks to months, the abnormal leakage may stop with normal healing. Importantly, avoiding known triggers (listed above) may help. Other helpful measures include stress management, getting 8 hours of sleep per night, and treatment of sleep apnea.  

What are medical treatments of CSC?

The doctor can recommend the best course of action by taking special pictures of the eye called a fluorescein angiogram. The fluorescein angiogram shows where the leak is coming from and how active the leak is. Prescription medication may be helpful if fluid leakage does not go away with time alone. Patients with high blood pressure may benefit from beta-blocker medications. Thermal laser photocoagulation may be helpful if the site of leakage is not close to the center of vision. Side-effects are rare, but may include the appearance of a small, permanent blind spot in the vision. Another laser called Visudyne photodynamic therapy (PDT) may successfully avoid blind spots in the vision in eyes with areas of leakage close to the center of vision. Medicine injections may also be used to treat this condition.

What will happen to the vision?

Usually the vision returns to normal or near normal. Rarely, central serous chorioretinopathy will cause permanently limited central vision with distortion. In about a third of cases, CSC will return at a later date in the same or other eye. Repeated episodes of leakage may result in a build-up of permanent damage to the retina. Therefore, any future decrease in vision should be promptly reported to the doctor. The vision may be monitored with the Amsler grid test.

By Scott E. Pautler, MD

For a telemedicine consultation with Dr Pautler, please send email request to spautler@rvaf.com. We accept Medicare and most insurances in Florida. Please include contact information (including phone number) in the email. We are unable to provide consultation for those living outside the state of Florida with the exception of limited one-time consultations with residents of the following states: Alabama, Arkansas, Connecticut, Georgia, Minnesota, and Washington.

Copyright  © 2013-2023 Designs Unlimited of Florida.  All Rights Reserved.

Retinal Vein Occlusion

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What is a retinal vein occlusion (RVO)?

Retinal vein occlusion means blockage of a vein in the retina.  The retina in your eye is like the film inside a camera.  The retina “takes the picture” of objects you look at and sends the message to the brain.  The retina is a living tissue, which requires blood supplied by tiny vessels.  Retinal veins are blood vessels that drain blood out of the retina. An abnormal blood clot in a retinal vein causes a blockage (occlusion) of the blood flowing out of the retina.  Depending on the location of the occlusion, vein occlusions are divided into branch retinal vein occlusion and central retinal vein occlusion.

retinal vein occlusion
anatomy of the eye (click on image to enlarge)

Who is at risk for a retinal vein occlusion?

Retinal vein occlusions occur in 1-2% of people over 40 years of age. Retinal vein occlusions are more common in people who are overweight, use tobacco or estrogen, or have hardening of the arteries, diabetes, high blood pressure, sleep apnea, glaucoma, or blood disorders.

What are the symptoms of a retinal vein occlusion?

Blurring of vision may occur if excess fluid (edema) leaks from the veins into the center of the retina.  Floaters can look like tiny dots or cobwebs moving about in your vision.  They may be due to bleeding from the retina into the central gel of the eye.  Pain is rare and may be due to high pressure in the eye (neovascular glaucoma).

What treatment is available?

There is no cure, but treatment may improve vision or keep the vision from worsening.  Your doctor may allow time for the vein to heal.  Sometimes eye drops or pills may be prescribed.  Medicine injections (Avastin, Lucentis, Eylea, steroids) may help recover vision and may be applied without pain in most cases. Injections may be required for the long-term; about half of eyes with central retinal vein occlusion require injections for at least three years. Injections for retinal vein occlusion are safe in regard to risks of problems outside the eye. However, there appears to be a low risk of stroke (intracranial hemorrhage) of <4/1000 every year of treatment.

Laser may stabilize or improve the vision.  The vision may not return to normal following treatment as there may be some permanent damage to the retina from the occlusion.  In some cases when treatment cannot improve the vision, laser is used to prevent severe pain and complete blindness.

Your doctor is going to order appropriate tests and recommend the best course of action to take at this time.  The retinal vein occlusion will not be worsened by your daily activities or by using your eyes. You may monitor the vision with the Amsler grid test.  It is important to be seen by your primary care doctor to treat risk factors of hardening of the arteries to prevent stroke and heart attack.

By Scott E. Pautler, MD

For a telemedicine consultation with Dr Pautler, please send email request to spautler@rvaf.com. We accept Medicare and most insurances in Florida. Please include contact information (including phone number) in the email. We are unable to provide consultation for those living outside the state of Florida with the exception of limited one-time consultations with residents of the following states: Alabama, Arkansas, Connecticut, Georgia, Minnesota, and Washington.

recent BRVO
blood spots and white exudates in retina from recent brach retinal vein occlusion (click on image to enlarge)
healing BRVO
Fewer blood spots as vein occlusion heals with Avastin (click on image to enlarge)
CRVO
Recent-onset central retinal vein occlusion of left eye

Copyright  © 2013-2023 Designs Unlimited of Florida.  All Rights Reserved.