Are Multi-focal Contact Lenses For You?

scl 2Whether you have worn contact lenses or not, multi-focal soft lenses can give you the freedom to see up close without always requiring glasses.

Multi-focal contacts work in a very different way than bifocal or progressive no-line glasses. With glasses, you have 2 distinct areas your eye rotates to view either distance or near. However, with soft multi-focal contacts, both the distance AND the near are located together within the small area of the pupil ( the black hole in the center of your colored iris ).

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Some multi-focal contacts have the near in the center like above with the distance around the periphery. Other designs have the distance in the center and the near around the periphery.

Fitting multi-focal contacts is not as straightforward as with standard contact lenses. There is an adaptation time for your brain to adjust to the new environment. Fitting these lenses requires multiple visits to our office for evaluation after you have ample time to go through the adjustment period.

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At that time, I can reevaluate the lenses and often make the next improvement. Patience on your part is needed if together we are to get the optimal lens power and fit. This generally requires from 4 to 8 visits depending on whether we need to change brands or make large prescription changes.

Multi-focal contacts may lower some distance ‘crispness’ but often only to a minor extent. The excitement and increase in near vision usually more than compensates should distance vision be a little less than glasses or your previous non-multi-focal contacts when your near vision was blurred.

Very small changes in power – often just 1 small step of lens change – can often make the difference between success and poor performance for you. That is why multiple visits are necessary in order to let your eyes and brain adapt to see if other changes are helpful later.

That is also why the fees for multi-focal soft lenses are considerably higher than standard single vision lenses – the time it takes to perfect your fit and vision is more than twice that of standard contact lens fitting.

Please give us a call at 415-747-8191 or visit our website at sao2020.com for more info.

Children and Digital Media

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Sleeping with cell phones or tablets can lower the quality of sleep states a medical article in  Univadis publication. This can be an important concern to all people and especially the young. The article states nearly 1/5th of all children sleep with their cellphones and quality of sleep may affect their health and immune system.

A recent CNN article reports a study by the American Academy of Pediatrics which sets guidelines. The academy recommends that for children 2 to 5 years of age, screen time should be limited to one hour per day.

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For kids ages 6 and older, parents can determine the restrictions for time spent using screen, as well as monitor the types of digital media their children use.

Babies are most vulnerable to screens. Infants aged 18 months and younger should not be exposed to any digital media, the academy says.

Digital media has opened the door to wonderful access to knowledge. However, like anything in life, moderation is the key and protecting children from undo eyestrain and poor sleep.

 

Adapting To Progressive Glasses

ADAPTING TO PROGRESSIVE LENSES

 Progressive lenses actually have three different focal distances all in one pair of eyeglasses.  Progressive lenses address near, intermediate and distance vision—without a visible, defined line in the lenses.  Using progressive lenses sometimes takes a bit of adjustment if you are new to them. These lenses are not like single lenses or bi-focal lenses.

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Lined Bifocal
  1. Turning Your Head, Not Your Eyes

The main difference between natural sight and seeing through progressive lenses is that you will need to turn your head to focus on an object instead of moving your eyes from side to side.

The corrective portion of your new glasses is in the middle of the lenses and trying to look through the outer portion of the lenses will appear fuzzy and out-of-focus. Therefore, you must look through the middle of the lenses and turn your head to look at objects that are not directly in front of you.

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  1. Move Your Head Vertically

Once you have turned your head to view an object straight on, you must then move your head up and down to bring the object into focus. This allows you to locate the one of three distances in your progressive prescription which will work the best and produce the sharpest image for you.

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There are many measurements that need to be done specifically for your eyes and the frame you choose. When everything is properly set up, a simple small moving your head will provide you with the vision you need at all distances.

Learning to focus will take some time and practice until it becomes second nature to you. It’s a lot like when you first get a car and it’s raining and you try to find where the controls for the lights and wipers are among all the other knobs. After a short time, you learn them so well that you can carry on a conversation with your passenger and use all the controls like it’s on automatic.

  1. Wear Your Glasses High

To give your eyes the greatest amount of corrective lenses surface to view through, it is important to wear progressive lenses high up on the bridge of your nose and as close to your face as possible.

This is exactly where your eye doctor should have measured and fitted your glasses for the best correction to your vision. Do not allow the glasses to shift or move on your nose, as this will prevent you from being able to gain focus. If your glasses are moving or shifting, bring them back for a fitting adjustment.

  1. Stop or Minimize Wearing Your Old Glasses

A person’s sight is a combination of the eyes and the brain working together to focus on objects at different distances. However, with progressive lenses you will have to retrain your brain and eyes to work together through the prescription of your new lenses. Minimize switching back and forth between your old and new glasses as you may disturb the retraining process. Retraining your eyes and brain to work with the new glasses may take anywhere from a few days to a few weeks. Please contact our office if you have any difficulties or questions.

Special Eyeglasses For Computer Eyestrain?

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Years ago, most people who worked at desks would open their mail, read it and then pull out their typewriter or pen and paper and respond. Those days are practically ancient history now. When before, our eyes would glance around the room while opening our mail and then look up while thinking of how to respond, these days that’s rarely the case. Our computers go from one email to the other with no lag of time for us to glance across the room or, if lucky, out the window. All this contributes to computer eye strain.

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Our eyes are not prepared for constant sustained near work.  For thousands of years, the near work demanded of our eyes was pulling the spear out of some Mammoth beast after the hunt.  There was no Instagram or Facebook need for posting pictures of our hunt and sharing with nearby tribes.

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Looking at a monitor 22-26 inches away puts a demand on your eye’s focusing lens. Just like holding your arm out straight is an easy  task for 30 seconds but after 5 minutes keeping it straight out becomes a daunting task, your eyes operate in like manner.

They need to look away every few minutes for proper function and to reduce stress. In our work environment, looking away, even if possible, typically is not done due to a stream of work on the computer monitor in front of us.

This is why in many cases of prolonged computer work, a person needs a specialized computer pair of eyeglasses. When people become older and need reading glasses, specialized computer glasses become of paramount importance.  When people wear progressive (bifocal) eyeglasses, they cannot see the screen without tilting their head back, as the reading portion is at the bottom of their glasses. This is not only inefficient but, like carpal tunnel syndrome, can cause neck injury and pain.

A specialized computer prescription is designed to reduce stress at the computer monitor distance and drastically reduces eyestrain and radically improves work efficiency.

Contact us at 415-747-8191 or read more at our website.

Alzheimer’s Detection In The Eye

altzheimer1There are many devastating diseases of aging like hypertension, diabetes and heart disease. However, none impacts the family quite as much as the emotional and psychological impact of Alzheimer’s disease.    

A relatively new eye scan instrument called an OCT –  OcularOCT machineCoherence Tomography – has been used to evaluate glaucoma, macular degeneration and retinal holes and detachments. Now, researchers have determined a connection between OCT results and early Alzheimer’s detection.

Early detection can help with early treatments – though treatments are far less than medicine would like. However, early detection would help in early diagnosis and provide for life’s adjustment in a more comfortable fashion – both for the patient and for developing family support.

Though very technical, the OCT instrument scans the back of the eye in real time. The entire process takes less than 1 minute and requires no drops or medicines to perform.

Below is an image created by the OCT of a detailed picture of the retina at the back of the eye.  Deposits in the retina (drusen) or reduction of the number of transmission  nerve fiber layer may be indicators of oncoming Alzheimer’s.

Imre Lengyell, PhD discusses in this short video his thoughts over drusen and Alzheimer’s.

It is awesome that research continues not only in this ocular area but in all areas of medicine to discover causes, early detection and possible treatments for this horrific disease which strips a person of his cognitive abilities and yet physically he or she still lives.

 

 

 

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