Expert Article: Warning Signs Of Glaucoma In Children And How To Prevent It

Glaucoma is an irreversible cause of blindness in children. The prevalence of primary congenital glaucoma (PCG)is one in 3,300 live births, and PCG accounts for 4.2% of all childhood blindness in the Indian population. This has a very major impact on the quality of life, and also, since life expectancy is more, one has to endure more years of suffering.

PCG can occur in newborns (that is true congenital seen at birth or intrauterine), infantile (less than 3 years) or Juvenile glaucoma (10-35 years). Secondary glaucoma can be due to other ocular anomalies like trauma, infection, inflammation, steroid use, small eyes (nanophthalmos), or systemic problems like Sturge-Weber's syndrome. The genetic pattern of PCG is 10% autosomal recessive and 90% sporadic. Mostly seen in boys and is usually bilateral.

PCG presents with a triad of symptoms:

• Epiphora or excessive watering of eyes.
• Photophobia or inability to see in the light.
• Blepharospasm or closure of eyes tightly. Parents may give a history of eye rubbing.

The presentation also can be with a Bull's eye or buphthalmos is when the cornea is enlarged and become hazy due to raised pressure in the eye. A good ocular examination by a trained ophthalmologist should be sought at the earliest in case of any of these symptoms.

As most say prevention is better than cure, it can be prevented to a certain degree by mother's getting fully vaccinated, especially rubella prior to pregnancy. Also, avoid teratogenic drugs and drug abuse during pregnancy.

Most of these children have to be examined under general anaesthesia for intraocular pressure, corneal diameter, retinoscopy, ophthalmoscopy and gonioscopy. Depending upon the severity of involvement, the management varies, which is mostly surgical. Initially, medical treatment is used to lower intraocular pressure by using hyperosmotic agents, beta-blockers, carbonic anhydrase inhibitors. At the same time, miotics and alpha agonists are contraindicated in PCG.

Surgery can be:

(1) Incisional surgery such as Goniotomy (possible only if the cornea is clear and

(2) Filtration surgeries are Trabeculectomy with adjunctive antimetabolites. The best standard surgical procedure is primary combined Trabeculotomy and Trabeculectomy with antimetabolites in PCG.

(3) Glaucoma drainage devices are the last resort. It can be a Baerveldt, AADI or Ahmed glaucoma valve.