Farvardin Blog

Cataract

A cataract is a clouding of the eye's natural, clear lens. Think of it as a clear window that slowly becomes frosted. This clouding scatters light, preventing a sharp image from reaching the retina. It is most commonly related to aging. However, some forms of congenital cataract are seen in children.

Refractive Error

Refractive error means that your eye does not focus light ideally onto the retina, resulting in a blurred image on the retina. This condition is not a disease, but a common problem with light focusing. Its main types include myopia (nearsightedness: nearby objects are clear while distant objects appear blurry), hyperopia (farsightedness: distance vision may be clearer than near vision), and astigmatism (vision is blurry at all distances due to an irregularly shaped cornea).

Night Blindness

Night blindness is a symptom, not a disease. It means your eyes have trouble adapting to low light. This is often due to a problem with the rod cells in your retina, which are responsible for night and peripheral vision.

Color Blindness

Most color blindness is not complete blindness to color, but a difficulty telling certain colors apart. It is usually an inherited condition (more common in males) present from birth. It happens when certain light-sensitive cone cells in your retina don't work properly. The most common type is trouble distinguishing reds from greens.

Retinopathy of Prematurity

ROP is a disease that affects premature infants. In the womb, the retinal blood vessels grow late in pregnancy. When a baby is born very early, this normal growth is interrupted. After birth, abnormal, fragile blood vessels may begin to grow in the retina. These vessels can leak and scar, potentially pulling the retina off (detachment).

Retinal Detachment

A retinal detachment is a medical emergency. It occurs when the retina peels away from the back wall of the eye, like wallpaper bubbling off a wall. When detached, the retina cannot function, leading to vision loss.

Tearlose Artificial Tears

The ophthalmic solution **Tearlose** is generally used as an **artificial tear** or **ocular lubricant**. This drop is employed to alleviate dryness, burning, and itching of the eyes caused by environmental factors, prolonged screen use, or certain ocular conditions.

Cyclosporin Eyedrop xxx

Cyclosporin Eyedrop

Artipic Eyedrop

Vitamin A Capsule

Optivision Capsule

Silicone Oil Removal

Silicone oil is a substance injected into the eye at the end of certain complex vitrectomy surgeries (usually for difficult retinal detachments) to hold the retina in place for an extended period. After the retina has fully stabilized (typically several months to a year later), this oil must be removed in a second surgery because over time it can lead to complications such as glaucoma, cataract, or corneal opacity.

Ptosis Surgery

Ptosis refers to drooping of the upper eyelid, which can be congenital or acquired (e.g., due to aging, eyelid trauma, or neuromuscular disorders). In severe cases, this drooping can restrict the superior visual field, cause eye fatigue, or be cosmetically bothersome. Surgery aims to elevate the eyelid to an appropriate level and achieve symmetry with the contralateral eye.

Strabismus Surgery

This surgery is performed to correct strabismus (misalignment of the eyes). In strabismus, due to an imbalance in the function of the extraocular muscles, the visual axes of the two eyes are not aligned. This can cause diplopia (double vision), amblyopia (lazy eye), and cosmetic and social problems. The surgery aims to restore eye coordination and alignment by strengthening, weakening, or repositioning one or more of the eye muscles.

Phaco with PCIOL

This is the standard treatment method for cataract. In cataract, the eye's natural clear lens gradually becomes cloudy, like a fogged-up window, blurring vision, fading colors, and making night vision difficult. Phaco surgery involves making a small incision in the cornea, breaking up and removing the clouded lens using ultrasound waves, and replacing it with a clear artificial lens (IOL).

Intravitreal injection

Direct injection of medication into the vitreous (the eye's gel-like substance) is used to treat vascular and inflammatory diseases of the retina and macula. Common injectable drugs include anti-VEGF agents (such as Avastin, Eylea) to reduce abnormal blood vessel growth and retinal edema, and corticosteroids (such as triamcinolone, Ozurdex) to suppress and control inflammation.

Phakic IOL implantation

This procedure is different from other laser vision correction surgeries. Instead of reshaping the cornea, a thin, custom-made lens is implanted inside your eye, usually just behind your natural iris. Your natural lens remains untouched. This is often the preferred option for very high prescriptions or thin corneas unsuitable for laser surgery. The procedure is performed through a microscopic incision, often using general or local anesthesia. The artificial lens unfolds and is positioned securely in place.

Retinal PDT

PDT is a two-step treatment primarily used for certain types of wet age-related macular degeneration (AMD). First, a light-activated drug called verteporfin is infused into a vein in your arm over about 10 minutes. Second, about 15 minutes after the infusion starts, your doctor will shine a non-thermal ("cold") red laser directly onto the leaky blood vessels in your macula for some seconds. The laser activates the drug only in that precise area, causing the abnormal vessels to seal without damaging the overlying retina. The laser itself is not hot and is not felt by the patient.

Retinal BL

A Barrier Laser is used to treat retinal tears, holes, or areas of significant thinning to prevent retinal detachment. After dilating and numbing your eye, your doctor will place a contact lens. The laser is applied in a pattern of small burns that surround the tear or weak area. These burns create gentle scar tissue that "spot-welds" or "fences off" the problem area, sealing it to the back wall of the eye and preventing fluid from getting underneath to cause a detachment. The procedure typically takes 5-15 minutes. You will see bright flashes and may feel a slight pulsing sensation.

YAG PI

This procedure is performed to treat or prevent angle-closure glaucoma. You will sit at the slit lamp after numbing drops are applied. Your doctor will place a special contact lens on your eye to focus the YAG laser. The laser creates one or two microscopic holes in the colored part of your eye (the iris). These holes create a new drainage pathway for the eye's fluid, bypassing a narrow or blocked natural angle. This lowers eye pressure and prevents a sudden, sight-threatening pressure spike (acute angle-closure attack). You may hear a clicking sound and feel a slight pinch or sting with each laser pulse.

YAG Capsulotomy

This is a quick, painless procedure done in your doctor's office. You will sit at a machine called a slit lamp, much like during a regular eye exam. Your doctor will place special eye drops to numb your eye and may use a lens to focus. The YAG laser is then used to create a small, clear opening in the cloudy membrane (posterior capsule) that sits behind your artificial lens implant. This cloudiness is a common occurrence months or years after cataract surgery. The laser uses focused light energy to vaporize a tiny area of the cloudiness without making any incision. The entire process takes only a few minutes.

Retinal PRP

PRP is a treatment for severe diabetic retinopathy or retinal vein occlusions. Its goal is to shrink abnormal, leaky blood vessels and reduce the risk of bleeding and retinal detachment. The procedure is done with numbing drops and taking painkiller medication to ensure comfort. Your doctor will place a contact lens on your eye. The laser (usually green or yellow) is applied to the peripheral retina (the sides), creating hundreds of tiny, patterned burns. These burns reduce the retina's demand for oxygen, which signals the abnormal vessels to regress. Treatment is typically spread over two or more sessions, each lasting 10-20 minutes, as your doctor plans. You will see bright flashes of light and may feel a dull ache or tapping sensation.

Retinal PDT

PDT is a two-step treatment primarily used for certain types of wet age-related macular degeneration (AMD). First, a light-activated drug called verteporfin is infused into a vein in your arm over about 10 minutes. Second, about 15 minutes after the infusion starts, your doctor will shine a non-thermal ("cold") red laser directly onto the leaky blood vessels in your macula for some seconds. The laser activates the drug only in that precise area, causing the abnormal vessels to seal without damaging the overlying retina. The laser itself is not hot and is not felt by the patient.

Retinal BL

A Barrier Laser is used to treat retinal tears, holes, or areas of significant thinning to prevent retinal detachment. After dilating and numbing your eye, your doctor will place a contact lens. The laser is applied in a pattern of small burns that surround the tear or weak area. These burns create gentle scar tissue that "spot-welds" or "fences off" the problem area, sealing it to the back wall of the eye and preventing fluid from getting underneath to cause a detachment. The procedure typically takes 5-15 minutes. You will see bright flashes and may feel a slight pulsing sensation.

Silicone Oil Removal

Silicone oil is a substance injected into the eye at the end of certain complex vitrectomy surgeries (usually for difficult retinal detachments) to hold the retina in place for an extended period. After the retina has fully stabilized (typically several months to a year later), this oil must be removed in a second surgery because over time it can lead to complications such as glaucoma, cataract, or corneal opacity.

Ptosis Surgery

Ptosis refers to drooping of the upper eyelid, which can be congenital or acquired (e.g., due to aging, eyelid trauma, or neuromuscular disorders). In severe cases, this drooping can restrict the superior visual field, cause eye fatigue, or be cosmetically bothersome. Surgery aims to elevate the eyelid to an appropriate level and achieve symmetry with the contralateral eye.

Strabismus Surgery

This surgery is performed to correct strabismus (misalignment of the eyes). In strabismus, due to an imbalance in the function of the extraocular muscles, the visual axes of the two eyes are not aligned. This can cause diplopia (double vision), amblyopia (lazy eye), and cosmetic and social problems. The surgery aims to restore eye coordination and alignment by strengthening, weakening, or repositioning one or more of the eye muscles.

Phaco with PCIOL

This is the standard treatment method for cataract. In cataract, the eye's natural clear lens gradually becomes cloudy, like a fogged-up window, blurring vision, fading colors, and making night vision difficult. Phaco surgery involves making a small incision in the cornea, breaking up and removing the clouded lens using ultrasound waves, and replacing it with a clear artificial lens (IOL).