What is glaucoma?

Glaucoma is an eye disease in which the optic nerve is damaged, causing permanent vision loss. Most commonly caused by raised intraocular pressure that lead to visual loss, which over time can progress to blindness. Worldwide, glaucoma is one of the leading cause of blindness.

Risk factors for glaucoma:

• Age: Six times more likely to get glaucoma if you are over 40 years old.
• Immediate family member with glaucoma: The most common type of glaucoma, primary open angle glaucoma, is hereditary.
• Diabetes: Some diseases that impact the entire body, such as diabetes, anaemia, or hardening of the arteries, increase the risk of the condition.
• Incorrect usage of steroid: Studies indicate Steroids increase intraocular pressure.
• Injury, infection or tumor in or around the eye
• High myopia
• Hypertension

Unfortunately, any vision lost as a result of glaucoma usually cannot be restored. This is why regular preventive eye examinations are so important. Low-vision rehabilitation services, which include the use of specialized optical devices and training, may benefit people with severe vision loss from glaucoma.

How is glaucoma detected?

Contact lenses & Special Contact Lenses Fitting

Most refractive errors such as nearsightedness, farsightedness, astigmatism and presbyopia can be corrected with contact lenses. We will fitting with consideration of your overall vision problems, the health of your eyes, your specific visual needs and lifestyles.

• Soft Contact Lenses
• Rigid Gas Permeable Lenses (RGP /GP)
• For Astigmatism
• For High Myopia
• For Presbyopia
• For Color Vision Deficiency
• For Keratoconus
• Cosmetic Contact Lenses
• Shortsightedness Control (Orthokeratology)
• FAQ

Soft contact lenses

Soft contact lensesare made of soft, flexible plastics that allow oxygen to pass through to the cornea. Newer soft lens materials include silicone-hydrogels to provide more oxygen to your eye while you wear your lenses.

Classified by Disposable (Replacement) Schedule

• Daily disposable
• Bi-Weekly disposable
• Monthly disposable
• Annually disposable

Rigid gas permeable contact lenses (RGP/ GP)

Rigid gas permeable contact lenses (RGPs) are more durable and resistant to deposit buildup, and generally give a clearer, crisper vision.They are easier to handle and less likely to tear. However, they are not as comfortable initially as soft contacts and it may take a few weeks to get used to wearing RGPs, compared to several days for soft contacts.

Advantages of RGP

• Crisper vision
• Easy care and handling
• Deposit resistance
• Excellence eye health
• Good value

Contact Lenses For Astigmatism

There are many brands and styles of soft lenses for astigmatism, including:

• Disposable contact lenses, that are available for monthly, biweekly and even daily replacement.
• Toric bifocal contact lenses, that correct both astigmatism and presbyopia.
• Scleral lenses, special large-diameter gas permeable contacts are extremely effective to unusual or high amounts of astigmatism
• Custom contact lenses, made of hydrogel and silicone hydrogel materials for to unusual or high amounts of astigmatism

Contact Lenses For High Myopia

The preferred method of correction of High Myopia is contact lenses. Contact lenses can restore vision with complete peripheral vision and little minification error. (Minification error is when looking through a high minus prescription all images are smaller) Contact lenses of the same correction will allow images to be much larger than a high prescription eyeglass would be, reducing minification error.

• Disposable contact lenses, which are now available as high as -20D , and for torics about -9D of sphere. This translates to a maximum spectacle power of -22D and -10D respectively, taking into account a vertex distance of 12mm.
• Rigid gas permeable contact lenses (RGP/ GP) which are smaller, thinner, more oxygen permeable than soft lenses, and which do not absorb tears from the surface of the eye.

Contact Lenses For Presbyopia

Presbyopia, a word that meant “the elderly eye” in Greek, is a symptom of aging eyes. After early to mid-40s, the lens of your eye becomes increasingly rigid and inflexible: it can no longer adjust its shape as easily to allow you to focus on both near and distant objects. Contact lenses options for presbyopia:

• Monovision contact lenses, one contact lens is prescribed for near vision and the other contact lens for distance.
• Multifocal contact lenses, like bifocal or progressive eyeglasses, have multiple focal points.
• Reading glasses worn over standard contact lenses for normal (distance) viewing.

Contact Lenses For Color Vision Deficiency

Color deficiency could be significantly enhanced the color perception by a monocular contact lens. A specialty contact lenses which tinted in deep red is worn in the nondominant eye and intensifies the color of red and green objects.

This lens does not cure the vision problem of color blindness, it only aids in the perception of colors.

Contact Lenses For Keratoconus

There is no one design that is best for every type or stage of keratoconus. The “best lens” is the one that fits your eye, corrects your vision and is comfortable to wear. Here is a brief outline of the types of lenses available for keratoconus:

• Rigid gas permeable contact lenses (RGP/ GP), Primary option for correcting KC vision. The rigid lens masks the underlying irregular cornea and functions as the new refractive surface of the eye, with the tear film filling in the space between the back of the contact lens andthe front of the eye.
• Soft lenses, latest soft lens in silicone hydrogel materials and complex mathematics to offer comfortable wear and excellent vision.
• Piggy-backs, a two lens system; an RGP lens which provides crisp vision, worn on top of a soft lens, which acts as a cushion providing comfort.
• Hybrid lenses, lens design combination that has an RGP center surrounded by a soft peripheral “skirt”.
• Scleral lenses, large diameter lenses that rest on the white part of the eye, called the sclera, and vaults over the cornea. That is surprisingly comfortable to wear because the edges of the lens rests above and below the eye lid margins so there is no lens awareness.

Cosmetic Contact Lenses

Cosmetic contact lenses are actually medical devices oversees by the U.S. Food and Drug Administration(FDA). Just like corrective contact lenses you should never buy contact lenses from a street vendor or a beauty supply store, and you should always have a prescription.

Wearing any kind of contact lenses, including Cosmetic contact lenses, can cause serious damage to your eyes if the lenses are obtained without a prescription or not used correctly. These risks include:

• A cut or scratch on the top layer of your eyeball (Corneal Abrasion)
• Allergic reactions like itchy, watery red eyes
• Decreased vision
• Infection
• Blindness

Remember:
" Buying contact lenses without a prescription is dangerous!"

What is Color Blindness, or Color Vision Deficiency?

This is refers to the inability of a person to correctly distinguish certain colors.

Complete color blindness, to view the world in only black and white, is rare.

Most of them are color deficiency, which has problems distinguishing between the colors red and green, mistaking them for the same color. A less common type of color deficiency involves the colors blue and yellow.

Inherited Colour Vision Deficiency

Color blindness is usually hereditary(you are born with it). More males are affected by the disorder than females.

• approximately 1 in 12 men (8%)
• approximately 1 in 200 women (0.005%)

Acquired Colour Vision Defects

Occasionally, certain eye diseases cause color blindness, referred to as "Acquired Color Deficiency."