A Linden family is seeking the help of the public in securing funds for their three-year-old daughter who has been diagnosed with Retinoblastoma (cancer of the retina of the eye) and is in urgent need of treatment.Three-year-old Crystal John and her father, IvanCrystal John of Amelia’s Ward, Mackenzie, Linden, was diagnosed with the life-threatening disease when she was just eight months old, resulting in the removal of one of her eyes. It has since spread to her other eye and she is currently unable to see.In an effort to save her life and prevent further spread, her remaining eye has to be removed. As such, her parents, Ivan John and LaShawn Daniels, are seeking the assistance of the public in an effort to raise funds for her to travel to Cuba to receive urgent treatment.The family is presently seeking to secure US$10,000, which includes treatment, accommodation, transportation and other costs. A number of organisations, including the Giving Hope Foundation – Guyana and the Sar & B Nonprofit Foundation have since been on the quest to assist the family in raising the funds with the help of the public.Linden Nurse Colwyn Allen has also organised a telethon on his radio programme “Healthy Living with Nurse Allen” in an effort to assist. Donations can be made via Citizens Bank Account # 219-002-772 and GBTI Account # 001062730013. A GoFundMe account has also been set up at GoFundMe:https://www.gofundme.com/crystals-johns-treatment.Her parents can be contacted on phone numbers 690-0866, 670-4337 or 687-7171, or interested persons can contact the Giving Hope Foundation on phone numbers 227-6588 or 624-0531 to donate.