This article on Epainassist.com has been review by a medical professional , as well as gibe for facts , to promise the readers the best potential accuracy .
We follow a strict editorial insurance policy and we have a zero - tolerance policy regarding any point of plagiarism . Our articles are resourced from reputable online pages . This article may contains scientific reference . The numbers in the parentheses ( 1 , 2 , 3 ) are clickable golf links to equal - reviewed scientific papers .
The feedback liaison “ Was this Article Helpful ” on this page can be used to report content that is not accurate , up - to - date or questionable in any fashion .
This article does not provide medical advice .
Glaucoma is an eye term that damages optic nerve due to increase intraocular pressure . This damage to optical nerve leads to progressive going of imaginativeness and if it is left untreated then it will leave to lasting blindness . Glaucoma is the second leading cause of blindness around the universe after cataract .
Advanced glaucoma is defined as so much loss of visual modality as to show pregnant symptom with enough harm / impairment of eye function . The opthalmic nerve is creditworthy for carrying all the ocular function from the retina to the brain and play an of import role in ocular perceptual experience . In modern glaucoma , the affected role loses about 80 to 90 % of one ’s opthalmic mettle fibre and the loving cup - to - disc proportion is around 0.8 or 0.9 , thus visual perceptual experience in ripe glaucoma patient role is severely afflicted . Generally , the ocular nerve is susceptible to high intraocular pressure , but in ripe glaucoma patients , the optic nerve also becomes more prone to terms / wound at normal / lower middle pressures too .
patient role move on to innovative glaucoma stage because they do not claver an eye doctor for regular eye checkup or they neglect significant eye symptoms for a long time . Some patient do progress to advanced glaucoma stage despite being under the aid of a doctor , but this is ordinarily rare in patients diagnosed too soon in the disease state .
What are the Symptoms of Advanced Glaucoma?
The symptoms of advanced glaucoma often vary from person to person . The patient might comprehend trouble with dissimilar visual functions such as reading , outdoor activities , drive , see at nighttime and usually his / her eyes tire well with dissimilar visual purpose . affected role have difficulty seeing in low weak environments as well as have difficulty seeing in bright light surroundings too and experience glare and radiosensitivity / photophobia / sparkle sensitiveness . Amber / yellow eyeglasses seem to help with limelight and direct contrast in the vision ; also drab tinted glasses helper with light sensitiveness .
In forward-looking glaucoma patients , all visual functions such as color , acuity , and contrast sensitivity are affected due to 80 - 90 % harm to the optic nerve , which plays a meaning role in sight . The usual pattern of vision loss is from superiorly as well as inferiorly and from fringe to center and as it pass on visual acuity ( sharpness of vision ) is lose and vision becomes narrow or patient experience tunnel vision . patient role also get severe defect in visual field that encroaches nub of fixing guide to split up fixing optical field deprivation . These patient have very poor prognosis , though ocular field tests change from person to person . bailiwick also show that glaucoma more often than not affects chickenhearted - down perception than red - green perception of light , but the overall visual sense is affected due to optic nerve impairment . Generally , affected role with glaucoma have symmetric optical field mar in both the eyes , but one eye defect can be risky than the other eye .
The patient might gift with foggy orblurred visual sensation , halos around lustrous lights , wicked heart and head pain , sickness , vomiting , sudden visual modality loss , easy tiring of eyes . The symptom differ from patient role to patient and in the same patient from day to day , as patient ’s report that they have some forged Day accompanied with good twenty-four hour period with their vision .
Treatment of Advanced Glaucoma
The patient who are at a risk of vision deprivation and those that are not managed with medications such as eye drops or even optical maser may benefit from surgery . The decision on surgical interference depends on the extent of ocular spunk equipment casualty , aim intraocular insistency , elevate intraocular press despite conservative management . Laser can be used in which a focused light beam is used to release intraocular pressure sensation by treating trabeculate net . Various laser surgeries used to handle glaucoma are selective optical maser trabeculoplasty ( SLT ) , argon laser trabeculoplasty ( ALT ) , optical maser peripheral iridotomy ( LPI ) and optical maser cyclophotocoagulation . If laser is not efficacious then incisional surgery ( filtering surgery ) can be opted in which an contrived drain hole is created in sclera with procedures such as trabeculectomy or sclerostomy to release intraocular insistence . In addition , ExPRESS bypass and glaucoma drain implants such as Ahmed and Baerveldt implant can be used to drain the fluid and release IOP .
reference :
Also Read :
