A gritty, sand-like feeling in the eyes without much itching is most often due to dryness rather than active allergy, especially if you spend long hours on screens. While Cromal Forte helps prevent allergic reactions, your current symptoms sound more like dry eye, which can come and go and often returns when treatment is stopped. It is not a good idea to switch to FML Forte on your own, because it is a steroid and repeated use without supervision can lead to side effects like increased eye pressure or infection. The safest long-term approach is to continue lubricating drops regularly (preferably preservative-free), use them more frequently if needed, and make small changes like taking breaks from screens (every 20 minutes, look away for 20 seconds), blinking consciously, and keeping your eyes well hydrated. You can also use a humidifier or avoid direct air from fans or AC. If symptoms still persist, an eye specialist may suggest other options like thicker gels at night or treatment to improve tear quality. With consistent care, dry eye symptoms can be controlled effectively.