"Putting back of eyes to the Forefront "
Retina is the neurosensory layer of the eye which is present inside and at the back of the eye. It is on this layer that an image seen by the eye is formed, which is converted to nerve signals and transferred to the brain. Hence person with a normal eye but with a retina disease will have poor vision. The common disease affecting the retina are :-
Diabetic retinopathy (DR) is a common vascular retinal disease affecting about 40% of type 1 diabetics and 20% of type 2 diabetics. Duration of the diabetes is the most important risk factor for DR .
Treatment for DR includes Laser photocoagulation,Intra ocular injections (Avastin) and Surgical Treatment .Surgery is done with 25 Gauge Micro Incision Vitrectomy Surgery (MIVS) instruments and Alcon Constellation Vision System.
Instruments available include Topcon Digital fundus camera, Fundus flurosescein angiography (FFA-where a fluroscent dye is injected into the vein followed by taking a series of photographs of the retina), Optical Coherence Tomography (OCT), B-scan.
Retinal detachment (RD) is a disorder of the eye in which the retina peels away from its underlying layer of support tissue and can lead to vision loss and blindness. It is a medical emergency. RD can occur due to a hole, tear, or break in the retina or inflammation and trauma. At Drishti Eye Institute Hospital we perform advanced retinal surgeries (with 25 Gauge Micro Incision Vitrectomy Surgery (MIVS) instruments and Alcon Constellation Vision System.) to do achieve good postoperative results in patients.
Macular Degeneration Print
Age related Macular Degeneration (ARMD)
Age-related macular degeneration (ARMD) is the most common cause of irreversible vision loss in people over age of 60 years. Retina is the seeing tissue of the eye. When the focused light hits the retina, a picture is taken.
The retina has two parts: The peripheral retina and central part called macula. This is the only part of the retina capable of producing a sharp and crisp image, which enables us to read, write, watch television and drive. There are two main types of macular degeneration, "dry" and "wet".
Dry type of age related Macular Degeneration
This is the most common type of age related macular degeneration. The round deposits called drusen (degenerated material) appear beneath the retina. A few small drusen cause no decrease in vision. However, if any large drusen develop, vision may be decreased. The dry type of macular degeneration presents with a slow, progressive loss of vision. In this type the vision remains stable and good for a longer period of time. Unfortunately there is no treatment for dry age related macular degeneration.
Wet type of age related Macular Degeneration
In this type, abnormal blood vessels grow beneath the macula, they leak and bleed. The "wet" form of macular degeneration can cause more severe visual loss. Vision may suddenly become distorted or blurred.
Symptons of age related Macular Degeneration
Initially patient may complains of seeing wavy or crooked lines or images.
Later on patient may have loss of central part of vision (may be slow with dry type and sudden in wet type of Age related macular degeneration).
Difficulty in reading, writing, watching TV.
Causes of age related Macular Degeneration
Age, Genetic predisposition and Smoking may play a role.
Diagnosis of age related Macular Degeneration
ARMD is diagnosed by detailed check up by Eye surgeons and by doing a specialized tests called FFA & OCT.
Fundus Fluorescein Angiogram(FFA): a special dye is injected into the veins of the arm and when the dye is passing into the circulation of the eye, pictures are taken with the special camera.
By examining images captured by the cameras, the eye surgeon can determine the size and the location of the abnormal blood vessels.
Optical Coherance Tomography (OCT)
OCT can measure retinal thickness precisely and repeatedly. It can measure minute changes, making it ideal for follow ups in retinal diseases, such as diabetes.
Drishti Eye Institute & laser Center is equipped with most advance Optovue
Special Injections like Intravitreal Eylea, Avastin, Lucentis, Accentrix and Ozurdex Implant.
Photodynamic Therapy (PDT)
Tips for ARMD patients
Making a FEW simple lifestyle charges will have positive effect on the quality of vision
To make reading easier: Use bright light, e.g. Halogen light. Shine the light on your Wear your reading glasses or in extreme cases - low visual aids.
Incorporate green leafy vegetables in your diet
Monitor your vision daily with an AMSLER'S GRID. This is used to screen for macular degeneration.
How to perform Amsler's Test ?
Wear your reading glasses
Hold the chart approximately 14-16 inches in bright light
Cover one eye
Look at center dot
Note irregularities (wavy, size, gray, fuzzy)
Repeat the test with your other eye
Contact ophthalmologist if you see any irregularities or notice any changes.