One possibility could be that in this fanfiction, Harry's glasses are some sort of magical anchor. Without them, he might accidentally slip into a different dimension. Maybe he was in the middle of a battle at Hogwarts, his glasses got knocked off, and suddenly he vanished. It could be that the glasses were enchanted by Dumbledore long ago to keep Harry in the 'right' magical space, and without them, he's lost in a sort of limbo.
In fanfiction, without his glasses, Harry Potter might be seen as more vulnerable. His glasses are like a part of his identity, and without them, he may struggle more with seeing clearly, which could add an interesting layer to his character, like when he's in a dangerous situation and his blurry vision could lead to some unexpected plot twists.
A fanfiction idea could be that without his glasses, Harry's world becomes a bit of a blur. He starts to rely more on his other senses. In the Forbidden Forest, this could be both dangerous and enlightening. He might be more attuned to the sounds and smells of the forest, but at the same time, he could easily walk into a dangerous area. His friends, Hermione and Ron, would have to be extra vigilant in protecting him. This new dynamic could change the relationships between them and lead to new adventures.
Perhaps in the fanfiction, Harry discovers a new spell or a magical item that can temporarily enhance his vision without glasses. But there could be a catch, like it only works for a short time or has some side - effects. This would lead to a whole adventure of him trying to find a more permanent solution while also dealing with the normal challenges in the wizarding world.
A fanfiction like this could explore Harry's character in a new light. Usually, his glasses are a part of his iconic look. Without them, he's not only physically different but also psychologically. He might feel more exposed and less confident. This could change how he approaches situations with the Snatchers. For instance, he might be more hesitant in making decisions or using magic, which could have a big impact on the outcome of any encounters.
One idea could be that without his glasses, Harry has a hard time recognizing his friends at first. This leads to some comical misunderstandings. For example, he mistakes Ron for a first - year student and tries to give him advice. Another plot could be that his lack of glasses makes him more vulnerable in a duel because he can't see the spells coming clearly. It could add an extra layer of danger and suspense to the story.
His relationship with Hermione might change. Hermione would probably be more protective and try to help him find a solution to his 'without glasses disorder'. She might also be a bit more bossy as she tries to guide him around since he can't see well.
The plot could change significantly. For starters, his initial reaction to the portkey journey and arrival would be different. Instead of quickly taking in the scene, he'd be fumbling around. This could lead to him being left behind by his companions if they're in a hurry. Also, if there's a mystery to solve at the destination, his impaired vision might make him overlook crucial clues that are visible only to those with good eyesight.
His character could become more self - reliant. Without his glasses, he has to find new ways to navigate the world, which might make him more independent. He would learn to trust his other senses more.
In fanfiction, if Harry Potter is in a portkey situation without his glasses, it could lead to a whole new set of adventures. His lack of clear vision could make him more reliant on his other senses, like his sense of hearing or magic - sensing abilities. Maybe he stumbles upon a magical object or creature that he wouldn't have noticed if he had his glasses on because he's forced to explore his surroundings in a different way. It could also create an opportunity for character development as he has to overcome the obstacle of his poor vision in this new and often unpredictable situation.
He might end up in a place where he can't see clearly without his glasses and struggles to find his way. For example, he could be in a dark forest where he stumbles around, trying to figure out where he is and how to get back. Without his glasses, his magical abilities might also be affected in some way, like his spell - casting accuracy.