Indian Journal of Ophthalmology

: 1984  |  Volume : 32  |  Issue : 5  |  Page : 333--334

Genetic counselling in prevention of blindness

VB Pratap, HB Lal, Jitendra Agrawal 
 Children Eye Care Centre, Department of Ophthalmology, KG Medical College, Lucknow, India

Correspondence Address:
V B Pratap
Children Eye Care Centre, Department of Ophthalmology, KG. Medical College, Lucknow 226 003

How to cite this article:
Pratap V B, Lal H B, Agrawal J. Genetic counselling in prevention of blindness.Indian J Ophthalmol 1984;32:333-334

How to cite this URL:
Pratap V B, Lal H B, Agrawal J. Genetic counselling in prevention of blindness. Indian J Ophthalmol [serial online] 1984 [cited 2022 Jul 4 ];32:333-334
Available from:

Full Text

Though the exact data of prevelance and incidence of blindness due to heritable eye diseases in the country are not available, but according to our observation in Children Eye Care Centre's OPD the incidence is quite high. While most of the cases the proper family history was not available.


In this study total 3490 children, those who attended the OPD of Children Eye Care Cen­tre in last 18 months were studied. Their ocular and systemic examination was done in detail and maximum possible of the pedigree was traced.





The above table shows that the incidence of the heritable ocular is quite high i.e. 41.49%, while in this so many types of cases are not included as they did not attend the O.P.D. during this study, or the symptoms developed quite late like retinitis pigmentosa, macular degeneration etc. Tracing of the pedigree is also very difficult in our society due to ignorance and illiteracy. Due these reasons we also do not get correct incidence and pattern of heritable problems.

Keeping in view the above data it is impor­tant to establish the genetic clinic to have a proper study of genetic problems and to cater the counselling to patients of heritable dis­ease. They should be told in detail the conse­quences of their disease on their off springs, if they marry or produce the children. This may help, in reducing the incidence. Con­sanguanity is quite common in some com­munity. In blind school it is quite common practice that blind marry among themselves it may further inhance the tragedy. This should be discouraged or marriage should be after proper medical checkup to rule out any type of genetic problem. Genetic counselling clinic may help a lot in this field.


In this study 3490 children were examined to study the incidence and pattern of heritable ocular diseases to establish the role of genetic counselling in reducing the incidence. In this study 41.49% cases were suffering with herit­able ocular diseases it means the incidence is quite high. Genetic counselling may play a great role in reducing the incidence of these diseases.