“Open-angle” means that the angle where the iris meets the cornea is as wide and open as it should be. It is also called chronic glaucoma and is the most common form, accounting for at least 90% of all glaucoma cases. The most general type of glaucoma is primary open angle glaucoma (POAG), disturbing over 33 million persons wide-reaching Quigley, 1996. It is produced by the slow impediment of the drainage channels, causing in improved eye pressure. Primary open-angle glaucoma (POAG), in which the iridocorneal angle and frontal eye organizations emerge ordinary in gonioscopy inspection. It is the supreme ordinary form analyzed in all populaces investigated and is particularly predominant (~4.2%) in individuals with African lineage. Genetic line of attack make to know that primary open angle glaucoma may be innate either as a general, multifaceted trait with fully developed onset or, fewer commonly, as a conventional Mendelian or monogenic sickness that inclines to have an premature onset Wiggs, 2007. Hereditary link studies of complex relations, frequently of European lineage, have acknowledged at smallest amount twenty one loci (GLC) for Mendelian arrangements of POAG Fan and Wiggs, 2010.

Juvenile onset of open angle glaucoma (JOAG) is an alternative of primary open angle glaucoma (POAG). JOAG is diagnosed prior before the age of 40 and universally described as an artifact of autosomal dominant inheritance Alward et al., 1998. The manner of inheritance in POAG is inconclusive Nemesure et al., 2001. Furthermore, greater than 90 point alterations have been recognized universally in numerous racial groups. These kinds of mutations report for three to five percent of POAG cases and a higher percentage of Juvenile-onset of open angle glaucoma cases (just about six to thirty six %) Challa, 2008Gemenetzi et al., 2012. Primary open angle glaucoma (44.7 million cases wide-reaching) is measured more communal than primary angle closure glaucoma (15.7 million).

Primary congenital glaucoma (PCG) is the supreme recurrent babyhood glaucoma and can lead to sightlessness during neonatal or early infantile period. Primary congenital glaucoma is the common term used for a glaucoma diagnosed in infancy or early childhood and is caused by abnormal intra-ocular fluid drainage from the eye as a result of a blocked or defective trabecular meshwork (the mesh- like drainage canals in the eye) Ghate and Wang, 2015. It may also be due to a hereditary defect or abnormal development during pregnancy. In other cases, an abnormal drainage system may be the result of some other disease in the eye which results in secondary glaucoma. In these cases, the glaucoma may be associated with recognizable iris (the colored part of the eye), corneal, or other eye problems.

Molecular genetic studies conducted during the last numerous years have established that PCG is an autosomal recessive trait. At present, four chromosomal loci have been concerned in PCG on GLC3A harboring the cytochrome P4501B1 (CYP1B1) gene Stoilov et al., 1997. Congenital glaucoma is a type of blinding eye illness that ruthlessly affects the improvement of visual acuity amongst children, infants and teenagers. It is caused by the hindrance of the aqueous outflow by the mal-development of the frontal chamber angle and the trabecular meshwork of the eye for the period of the embryonic development phase Maul et al., 1980. PC Glaucoma is autosomal recessive eye disarray observed in intermittent and familial cases. The Primary Congenital Glaucoma is universal in North Africa and at hand in a more harsh form than in the western world Helmy, 2016. The pervasiveness of pediatric glaucoma in the Middle East is 1:2500, while in consanguineous Slovakian children, it is 1out of 1250. The incidence ranges between 1out of 10,000 to 1out of 12,500 in western countries Helmy, 2016.

The popularity of Primary congenital glaucoma differs permitting to the topographical position and civilization. The occurrence is 1/10,000 in Western motherlands, 1 out of 2,500 in Arabic people, and uppermost in the Gypsy inhabitants of Slovakia, wherever its prevalence is 1 in every 1,250 living births outstanding to an elevation speed of cousin marriages in these republics Bejjani et al., 2000Sarfarazi et al., 2003. The predominance of Primary congenital glaucoma in south Indian is estimated to be 1 in 3,300 and result 4.2 percent of infancy loss of sight Dandona et al., 1998. 3 loci have been recognized: the GLC3A (2p21) Sarfarazi et al., 1995, the GLC3B (1p36) Akarsu et al., 1996 and GLC3C (14q24.3) Stoilov et al., 2002.

It is caused by clogged drainage channels, causing in a sudden increase in intra-ocular pressure 12-21. It is also called acute glaucoma or narrow-angle glaucoma. Unlike open-angle glaucoma, angle-closure glaucoma is a result of the angle between the iris and cornea closing. It is relatively a less common form of glaucoma. Primary angle closure glaucoma (PACG) is the supreme widespread type of glaucoma universally Kuehn et al., 2011. Nevertheless, primary angle closure glaucoma (PACG) is thought to be the most familiar reason of bilateral glaucoma sightlessness cosmopolitantly Quigley et al., 2001. This is a sub kind of glaucoma, and can be defined as an anatomic disarray of the frontal cavity, through which the drainage position is obstructed by the frontal development of the iris Lin et al., 1997. Primary angle closure glaucoma leftovers a main reason of unalterable blindness, predominantly in Asian countries such as China Foster et al., 2000, Mongolia Foster et al., 1996, Singapore Foster et al., 2000, and India Dandona et al., 2000 with up to 80% of the predictable 15 million citizens afflicted with PACG inhabitant in Asia Quigley and Broman, 2006. The figure of patients with PACG is probable to rise by roughly 5 million people from 16 million over the next decade Quigley and Broman, 2006. Quite a lot of anatomic hazard issues for the improvement of Primary angle closure glaucoma has been famous together with a narrow frontal chamber deepness and petite axial distance. Pretended replica organizations have providing the facts that the occurrence of equally amplified lens curving and a undersized zonule-iris space add to a pupil block in angle closure glaucoma Huang and Barocas, 2004. PACG patients have been found to have exacting anatomic biometric skin tone together with shallow anterior chambers Lin et al., 1997, lens breadth and position Foster et al., 1996, constricted iridio-trabecular drainage angles, dumpy axial lengths Abu-Amero et al., 2007, and hyperopic refractive fault Congdon et al., 1996. The infection is accompanying with grownup stage, womanly masculinity and rivalry (anterior compartment angle is thinner in Eskimos and Asians Salmon, 1999.

Numerous studies have exposed that genetic factors take part in an chief role in the development of PACG Alsbirk, 1975Amerasinghe et al., 2011. Although a sum of susceptible loci and genetic factor have been investigated for PACG, the accurate genes underlying PACG have not been recognized Cong et al., 2009.

In tonometry, eye drops are used to emotionless the eye. Afterward a physician or technician uses a stratagem called a tonometer to measure the inner stress of the eye.A small aggregate of pressure is pertained to the eye by a minute device. The normal range for eye pressure is 12–22 mm Hg. The level of eye pressure by which glaucoma progresses is not the same for everybody and some individuals can get glaucoma even if their pressures are in the normal range.

This investigative route aids the doctor scrutinize optic nerve for glaucoma impairment. Eye drops are used to expand the pupil so that the physician sees throughout eye with a particular lens in direction to observe the form and color of the optic nerve.

Perimetry (or a ophthalmic field assessment) creates a map of field of visualization. This analysis helps a specialist to regulate whether a individual vision has been disturbed by glaucoma.

This is a investigative exam that supports to regulate whether the position wherever the iris gathers the cornea is open, thin, or closed. Through the examination, eye droplets are used to distress the eye and a distinct hand-held contact lens is smoothly positioned on the eye for a few minutes.

It measures the wideness of the cornea, the well-defined opening at the anterior of the eye. Corneal thickness has likely to effect eye pressure interpretations.

Uncertainty a cornea is thicker than normal, pressure evaluations with a tonometer may be sophisticated. This contributes your eye physician surplus evidence for glaucoma analysis.

These innovative methodologies to glaucoma operation show potential for improved protection. As with all novel practices, time and continuation conclusions are compulsory to see which medical measures will persist advantageous for relieving glaucoma patients durable.

Based on latest information gotten from research on the pathology of neuronal apoptosis, there are numerous practices of new treatments that can be helpful for diagnosis of glaucoma in Pakistani population. Some of them are discussed here.

In this technique, contrasting conventional glaucoma operation, there is minimum maneuvering of the sclera and the conjunctiva. Whilst these practices lessen the frequency of hitches, some quantity of efficacy is also transacted for the better protection.

• Miniaturized forms of trabeculectomy; operating tiny, microscopic sized ducts that can be injected into the eye and trench fluid from the internal of the eye to beneath the conjunctiva, these innovative procedures are aimed to create the trabeculectomy process securer.

• Complete internal or suprachoroidal shunts; by Using teeny tubes with very slight internal openings, the front of the eye is connected to the suprachoroidal space between the retina and the wall of the eye to intensify the drainage of fluid from the eye.

• Trabecular Operation; the trabecular meshwork can be detached or evaded.

Subsequently resistance to elevated intra ocular Pressure is immune related, T-cell provoked neuro-protection may immunize the retinal ganglion cells from apoptosis. For instance, copolymer-1 could be used as a vaccine as it is an antigen that cross responds with a widespread array of T-cells, and can provoke a defensive immune reaction to shield retinal ganglion cells from cell mortality initiated by toxins or improved Intra ocular Pressure Bakalash et al., 2003. A fundamental concern for planning neuro-defensive vaccines is the position of protection. Some recommended that the focus should be in the retinal ganglion cells and not in the optical nerves because in the initial glaucomatous phase cell fatality stimulated by higher intra ocular pressure that arises in the retinal ganglion cells, not in the optical nerve Bakalash et al., 2003. R16, a peptide derivative from the retinal ganglion cell, is one paradigm of a neuro-protecting vaccine. Though R16 can instigate slight retinal ganglion cell death for those deprived of glaucoma, the advantage from this treatment extremely surpassed the mutilation from untreated glaucoma situations Bakalash et al., 2003.

Memantine is a NMDA receptor opponent that chunks unnecessary NMDA receptor action. This medication has been accepted for medical use in Europe for the healing of Alzheimer’s disease and vascular dementia, although its efficiency in preventing glaucomatous retinal ganglion cell disintegration is still undetermined Lipton, 2003.

Subsequently the up regulation of iNOS-2 is injurious to neurons, its inhibition could have a neuro-defensive outcome. An inhibitor like amino guanidine can inhibit the mortality of around 75% of retinal ganglion cells during six months of provoked higher intra ocular pressure and help to prevent additional damage of retinal ganglion cells Neufeld, 2004.

A thought-provoking alternate to amino guanidine is Ginkgo biloba extract (EGb 761). Ginkgo biloba is used as a nourishing complement for the decline of platelet accumulation, vasodilation and lessening of blood viscidness Bartlett and Eperjesi, 2004. This comprises 24 percent flavonoid glycosides and 6 percent terpenoids, which might prevent toxicity and NO free radical accretion by impeding iNOS Hirooka et al., 2004. In experimentations when intra ocular pressure is raised in rats by cautery of episcleral vessels, nurturing the rats 30 mg of EGb 761/day for about five months reduced retinal ganglion cell damage from 29.9% to 4.6% Hirooka et al., 2004. Additional research scrutinizing the alteration of NO in reaction to EGb 761 treatment might deliver insight into its neuro-defensive method.

Utmost apoptotic means comprise increasing intracellular calcium stages. Flunarizine, a calcium network blocker, has been indicated to expressively increase retinal ganglion cells existence in rat and rabbit mockups by decreasing intra ocular pressure Osborne et al., 2002. Nevertheless, the accurate method of this and further calcium channel blockers desires to be explained.

Alternative objective is the signal transducers and activators of transcription protein 3 (STAT-3). They play an significant role in cell development and discrimination and are of significance due to the messenger RNA of this protein is upbeat regulated in rats with glaucoma Thanos and Naskar, 2004. The initiation of STAT-3 passageway could impede apoptosis by suppressing caspase-3. One molecule that has been examined is ciliary neurotropic factor (CNTF), which is an interleukin-6 cytokine. The insertion of CNTF into rat eyes with enlarged intra ocular pressure decreases apoptosis, phosphorylates STAT-3, and downgrades the action of caspase-3 Adamus et al., 2003. Interleukin-10 also has neuro protecting action through the STAT-3 passageway Boyd et al., 2003.

Inhibitors of apoptosis protein (IAP) can correspondingly decrease apoptosis by impeding Caspase. Baculoviral IAP repeat-containing protein-4 (BIRC-4) is a direct inhibitor of Caspase 3, 7 and 9. BIRC-4, transducted into the eye, can obstruct apoptosis of optical nerve axons McKinnon et al., 2002. A pharmacological methodology for apoptosis inhibition is the usage of minocycline, which could inhibit caspase-3-induced apoptosis Baptiste et al., 2004. It proliferate the persistence rate of retinal ganglion cells visible to the damaging results of glutamate. Moreover, it can act synergistically with MK-801, an opponent to NMDA receptors, to escalate retinal ganglion cells existence percentage.

Geranylgeranylacetone (GGA) is an acyclic polyisoprenoid presently used in Japan as an anti-ulcer remedy. The neuro defensive effects of the medication are accelerated through the use of heat shock proteins. Specifically, Heat Shock Protein 72 looks to act as an opposing apoptotic chaperone protein that inhibits with various phases in the apoptotic passageway. Systematically, the drug is assumed to stimulate Heat Shock Factor 1 (HSF-1), a transcription element for heat shock protein, which oligomerizes in the cytosol and transfer into the nucleus once visible to stressors Sohn et al., 2013.