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First Author: S.Venkatarathinam INDIA
Co Author(s): D. Gadre
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To report a rare case of Congenital Stationary Night Blindness (CSNB) and Juvenile Open Angle Glaucoma (JOAG) in a 33 year old male.
Presenting an observational case report, from a tertiary eye care hospital in India.
Congenital Stationary Night Blindness refers to a group of non-progressive retinal disorders that are characterised predominantly by abnormal function of the rod system. CSNB is not a single disease but encompasses diverse disorders that share the common clinical feature of non-progressive early onset night blindness. None of the variants is currently treatable. CSNBs are divided into two groups- 1) Fundus with normal appearance. 2) Abnormal fundus. It may be inherited as autosomal dominant; autosomal recessive or X linked recessive. Primary Juvenile Open Angle Glaucoma is a rare disorder that may develop from 5yrs to 40 yrs of age. The gene for Juvenile Glaucoma has been identified on Chromosome 1(band 1q21-1q31). It is related to the mutations found in TIGR gene in these patients. It is inherited as autosomal dominant. To report a rare association of both the disorders in the same patient.
None of the variants of CSNB is currently treatable. JOAG for this patient is being treated medically. JOAG is known to be refractory to medication and if so observed, surgical treatment options have to be explored for Intra Ocular Pressure (IOP) control.
To the best of our knowledge, CSNB and Juvenile Glaucoma have not been reported together in literature. We would like to report this case due to the rarity of the coexistence of these two inherited ocular disorders in the same patient.