Help & Tips

Frame Care Tips

1. Dont wipe your lenses dry with tissue or any hard paper. Use a soft, clean, lint-free cotton/microfiber cloth.

2. Clean the lens and frame by hair shampoo, if you find oily dirt on the lens.

3. When not wearing your glasses be sure to store them safely. Dont leave your eyewear in extreme cold or hot temperatures, such as on the car dashboard, as this can damage the lens coatings.

4. Have your eyeglasses adjusted regularly. This includes tightening the screws and replacing the nosepads.

5. Make sure to take off your specs when you feel sleepy or you know you will fall sleep soon. Most of the glasses frame get cracked when people wearing it during a sleep.

6. When using hairspray or other chemicals, remove eyeglasses beforehand to prevent any damage to the lenses.

Glasses not gripping your ears properly? Feeling loose? Adjust the arms on your glasses

1). Use a hair dryer to carefully heat up the arms to make them a little easier to bend.

2). Make sure to support the frames as you "carefully" bend them.

3). Don't force them to bend.

4). If you contain the heat by holding the frames inside a bowel or container as you heat, it will help.

5). Don't hold the hairdryer for too long in one place on the frame.


The Perfect Frame Fit for you!

The shape of your face is the most important factor when choosing frames. The following descriptions should help you decide which frame design is right for you.

Round Faces

Rectangular frames would be most suitable.

Oval Faces

Most frames will suit this face shape. Size is the most important point when deciding on frames.

Triangular Faces

Rectangular frames would be most suitable.

Square Faces

Oval Shaped or Round Frames would be most suitable.

Rectangular Faces

Oval and Round frames would be most suitable with medium or larger size models.


Glasses for Computer Work - Eyestrain

It seems that we use computers just about everywhere these days.  Most of us spend a large part of our day squinting at a monitor, be it at work, home, or university.  With more and more of our shopping and entertainment being driven by the Internet, the time we spend on the computer is only likely to increase.

For many people, this is not likely to pose a problem but for people that spend more than two hours at a computer each day it is likely that they will experience symptoms of CVS or Computer Vision Syndrome. The most common symptoms include headaches, focusing difficulties, burning eyes, tired eyes, general eyestrain, aching eyes, dry eyes, double vision, blurred vision, light sensitivity, and neck and shoulder pain.  These symptoms can be uncomfortable and can certainly reduce a person’s productivity. The good news is that it is relatively simple to ease these symptoms.  Many of these vision problems can be caused by medical conditions like astigmatism or presbyopia but in many cases they are caused by the way you use your computer.

If you are not a glasses wearer, simple changes like ensuring your computer screen is clean, correctly positioned, and set up correctly will make significant differences.  And if you are a glasses wearer then the ensuring your glasses lenses are clean and smear free will help to reduce glare and reflections.

Furthermore, by law employers must ensure that your workplace and equipment do not put your health at risk, so talk to them if you have any problems or special requirements regarding your vision. If you use a computer for a significant length of time at work or while studying, your employer or the NHS, respectively, should pay for your regular eye examinations. If you are found to need glasses or contact lenses to use a computer, your employer is legally required to pay for these.  Full-time students 18 years and under will be covered under the NHS.

If symptoms such as headaches persist, you should always consult your optician or doctor for their advice. It may be the case that a simple change in prescription is all that is needed to cure these symptoms. Of course, these symptoms could also be a sign of a more serious condition, so get them checked! If you are like us and are always looking for something for nothing, why not keep an eye on our Blog as we regularly let our customers know when and where you can get a cheap or perhaps even free eye test at leading high street opticians.

Recommended Steps to take to reduce Eye Strain.

1). Adequate Lighting

Proper lighting can reduce eyestrain and glare. Glare is created by glare on walls and other surfaces, reflections from the computer screen, bright light coming in from outside, and bright light inside. To decrease light and reflections from external light, close drapes or blinds. When using computers, lighting should be about half of that used in most offices. Using fewer light bulbs or florescent bulbs or use lower intensity bulbs can reduce glare caused by overhead lighting.

2). Work Environment

Temperature and humidity or poor ventilation all contribute to headaches and dry eyes so ensure your working environment is comfortable.

3). Workstation/Monitor Placement

By modifying your work area, you can reduce eyestrain and other effects of CVS. If you need to look back and forth between the printed or written page and the computer, eyestrain can occur. Place written pages on a copy stand next to the monitor. Properly light the copy stand. Adjust your workstation and chair to the correct height. Purchase ergonomic furniture to assure proper screen locations and posture. Poor ergonomic setup is a cause of head, neck, shoulder, and back pain.

Place your monitor directly in front of you, not off to one side. It should be about 20 to 26 inches away from you. Make sure your monitor is just right for you, not too high and not too low. You may need to raise or lower your chair. If you reposition your chair, keep in mind that your arms should be parallel to the floor when you type, and your feet should be flat on the floor or on a footstool. Finally, maintain good posture at your desk: keep your back straight and your shoulders back. Adjust the contrast between the background and the characters on the screen by adjusting the brightness on your computer screen.

4).  Correct Monitor Setup

Proper setup of your monitor will dramatically improve the comfort on your eyes; this setup process is simply done by adjusting the contrast and brightness settings of your monitor.  If you are using an older CRT monitor that suffers from screen flicker, consider upgrading to a newer TFT screen as these tend to be easier on the eye.

5). Take Regular Breaks

Take regular breaks away from the screen for 10-15 minutes every hour to avoid eye fatigue, perfect time to grab a cup of tea or coffee! Your eyes make more than 10 thousand movements an hour when looking at a computer, so they will naturally get tired.  We also tend to blink less frequently when staring at a screen, which will cause our eyes to feel dry.  To help neutralize dryness and fatigue, try looking away from the screen for approximately one minute out of ten, looking around the room or preferably out of a window.


How Twin can help you beat eyestrain

To help combat eyestrain caused by using computer screens we offer a advanced Blue-Cut coating on your lenses to eliminate surface reflections.  This increases the light transmission through the lenses and provides you with clear, defined vision day or night. Any optician would advise you to incorporate an anti-reflective coating for computer use and night-time driving.  The coating has stylistic benefits as well, as the lenses tend to appear thin and almost non-existent, making your eyes look more natural.

If you require a pair of glasses for you computer work in the office, why not check out our collection starting from just Rs.360. Having a spare pair of cheap glasses kept at your desk will mean you can continue to ensure eyestrain is kept to a reduced level.

Understanding Frame Measurements

In terms of the fitting of the spectacle frame, the bridge is perhaps the most important part to consider when choosing your frames, because it is here that the major bearing surface and area of contact between the front and the face is situated. The bridge design should facilitate a comfortable and supportive fit which will maintain the position of the lenses over your eyes with a natural gaze.

The Bridge Width

The bridge width is the minimum horizontal distance between the nasal surfaces of the rims on a plastic or metal frame, or the minimum horizontal distance between the nasal surfaces of the lenses in rimless frames. If a frame has adjustable nose pads on metal arms various modifications can be made in order to achieve a satisfactory fit.

Increasing the distance between the pads may be appropriate in cases when:

The frame size is sitting too high on the face

The bifocal segments or distance section of a progressive (Varifocal) lens are too high

The bridge is too small a fitting for the nose

The distance from the eye to the lens is too great

Decreasing the distance between the pads may be appropriate in cases when:

The frame sits too low on the face

The bifocal segments or distance section of a progressive (Varifocal) lens are too low

The bridge is too low for the nose

The lenses are sitting too close to the eyes and lashes

The Lens Width

The lens width is the distance between the vertical sides of a rectangle containing the lens shape (in mm), the diagram above illustrates this.  The sizes for the lens width and bridge width can usually be found on your current glasses by looking on the inside of the frame (usually printed on the arms or the bridge)

The Arm Length

The arm length is measured from the dowel point to the extreme end of the side, this is made up of the length to the bend and the length of the drop to give the overall length of side.

When choosing a new spectacle frame check your current frame sizes by looking for the printed measurements (usually found on the arm or bridge), for example:


52 (mm) will represent the lens width

16(mm) will represent the bridge width

52 (mm) will represent the overall length of the arm

Overall Frame Width

Another measurement to consider would be the overall width of the frames, the diagram above illustrates this, it is important to note, aside from two times the lens width plus the bridge width the overall width is also dictated by factors such as the thickness of the rims of the frames and how swept out the lugs are from the frame. Our measurements give an approximate indication to the overall width taking into consideration the lenses and bridge not the lugs of the frame, this measurement is approximate and will vary according to the type and design of the frames.


Your Vision Type

Fashion / Non prescription

These frames can be purchased without prescription lenses, simply select the Frame Only or Plano choice.

Single Vision Use

Single vision lenses can be used for seeing things at a distance, viewing your computer screen or just reading up close. These lenses will just contain one correction over the whole lens area hence the name Single Vision.


These lenses contain two prescriptions, the upper part of the lens is generally used for distance vision, while the lower part is used for near vision. Bifocals do have a visible dividing line between the upper and lower sections of the lens.

Varifocals / Progressives

Progressive or Varifocal lenses provide a smooth progression from distance correction to near correction. This eliminates segment lines, and also gives a third area of the lens. This intermediate vision area allows for clear vision at arms distance.