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In the world of eyeglasses contact lenses are not less popular due to their flexibility to wear and look. If you have a normal power in your eyes then you should opt for contact lenses because they are safe and will never damage your eyes if you remove them before sleeping and taking utmost care of your eyes. It is recommend to buy high quality contact lenses. These lenses are light in weight and named as an effective medical device by FDA for correction of faulty vision. In fact, they have now become a popular substitute for eyeglasses.

These are mostly colorless but are sometimes slightly tinted to make them easy to use.

Uses of contact lenses:

Contact Lenses

# 1. For myopia (shortsightedness): Myopia or short-sightedness is one of the most common refractive vision disorders where contact lenses are used. A special type of corrective contact lens, the spherical lens is used to bend the light evenly to create a focused image on the retina. The contact lenses used in this case have negative powers.

# 2. For hypermetropia (long-sightedness): Since the objects close to the eye seem unclear while the far objects seem clear, convex contact lenses are used. These have positive powers.

# 3. For astigmatism: A patient suffering from astigmatism sees distorted images in all directions. The light is not evenly focused on the retina. A toric lens is usually used to correct the vision. Toric lenses do not refract light vertically but horizontally. Therefore, these are most suited for this type of optical disorders. Sometimes rigid, spherical lenses are also used.

# 4. For presbyopia: Presbyopia is a condition of the eye that occurs mostly with an increase in age. The eye lenses lose their elasticity, making it difficult to focus on close objects. Thus, it is a case of long-sightedness caused by ageing. Two types of contact lenses are used for treatment: monovision lenses and multifocal lenses. If there is keratoconus in addition to astigmatism then a certain type of contact lenses can be used to give a greater accuracy of vision than eyeglasses.

# 5. For colour blindness: Colour blindness or colour deficiency is the diminished ability of the cone cells of the eye to detect color. Complete color blindness or achromatopia can lead to impairment of eyesight in a manner that is not fixable in a normal way. An "X-Chrom" lens with red hue might be used to partially restore vision. “Red-filtering contact lenses” can also be used to diminish light sensitivity in case of achromatopia.

# 6. For aniseikonia: In this case, the size of the image on the eyes varies widely. Certain types of corrective lenses are used to rectify the refractive error that causes this problem.

Contact Lenses

# 7. For aesthetic purposes: Cosmetic or decorative contact lenses are also worn nowadays as a fashion trend. These lenses are tinted to change the colour and appearance of the eye. These blinds also have a sublime touch to their appearance. They usually do not correct any refractive error of the retina. Some of these partially colour the iris, thus accentuating the natural colour, while others completely cover the iris, thus changing the eye colour. Circle contact lenses are also used nowadays in some countries to give an enlarged appearance to the iris, thus making the eyes look like that of dolls. However, it is advisable not to try these lenses without a certification of perfect vision.

Why Are Contact Lenses Popular?

Initially, contact lenses were made of hard-blown glass which made them difficult to wear. However, with the advent of soft contact lenses in 1971, this drawback was removed and contact lenses became increasingly popular. They can be used for daily wear and some of them can also be worn while sleeping. The fact that they do not collect moisture or dust as easily as eyeglasses make them easier to handle. Colour changing contact lenses are widely used in films and other forms of visual media by actors to give the desired appearance.

Contact lenses feel great! They make you look smart, and you can easily visualize the whole world without having to wear outdated or heavy glasses. If you want natural field or view then you should consider opting for contact lenses. Contact lenses are superior over eyeglasses because it doesn’t have frames which can block your vision. If you are a sports person then you should choose contact lenses because you will not face any problems with harsh weather conditions. However, for every beginner contacts aren’t something they can master effectively.

Wearing contacts the improper way or for an extended period of time can lead to several health conditions which can deteriorate your eyes permanently.

Contact Lenses

# 1. Contacts lead to dry eyes

Contacts are responsible for dry eyes because they absorb amounts of tears going into the cornea. As a result, it leads to itching, burning and red-eye conditions which stimulate dry eyes.Now, too much dry eyes can lead to scarring of the cornea causing immense pain. Hence, always use a lubricant while you’re using contact lenses.

# 2. Stops corneal reflex

Another potential threat of wearing contact lenses is it leads to corneal reflex. Corneal reflex allows the eyes to shut down when it detects a potential threat to the cornea. For example, when there is pressure in the cornea or any chances of trauma coming near the eye, the brain signals the eyes to close.Wearing contacts reduces the chance of corneal relax and the eye is susceptible to trauma and infection. As a result, eyes can be damaged.The solution to this predicament is to wear glasses at home, and using a lens to a minimum amount.

# 3. Can cause conjunctivitis

Conjunctivitis or red eye can easily affect one who wears contacts at a long stretch. When you are wearing contacts for a long time then bacteria, dirt and debris can accumulate in the eye. Further, contact lenses block the amount of oxygen getting into the eye.This can result in vision issues along with infections that result in conjunctivitis or red eyes as the oxygen cannot eventually clean their eyes out. Symptoms include red eyes, itchiness and discomfort. The solution to this is to wear contacts for a limited time and never fail to remove them prior to bed.

# 4. Irritation if used along with birth control pills

Birth control pills combined with contact lenses will lead to severe eye dryness. This can cause irritation in vision along with corneal damage. As a consequence vision will be affected.

The solution to this is to not consume birth control pills while you’re to use the contact lenses.

# 1. Contacts can block oxygen supply to the eyes:

Another potential side effect of using contacts is they can block oxygen to the eyes. Oxygen is very essential for the eyes as it helps in clearing out infection and dust accumulated. Without the supply of oxygen to the eyes they will dry up.

Moreover, the lack of oxygen can cause red eyes, corneal abrasion etc. This can lead to severe eye conditions, for example, blindness.

# 2. I can lead to Corneal ulcer:

When a person’s cornea is affected due to misuse of contacts, it can lead to an accumulation of fungus and bacteria. Moreover, due to the scarring of the tissue, it can lead to a corneal ulcer.A corneal ulcer is dangerous and can lead to permanent blindness. Hence, use contacts properly and preferably softer ones.

Contact Lenses

# 3. A condition of Ptosis:

Contact lenses can lead to Ptosis; Ptosis is a condition which enables the dropping of eyelids and making one unable to open their eyes fully. Tissue scarring and eyelid abrasions are one of the major reasons behind the condition of Ptosis.One way to prevent Ptosis is to use soft lenses and not hard regular ones.

Well, now that know of the potential side effects and dangers of contact lenses, use them wisely to prevent chances of scarring of permanent eye blindness.