Enough, but not too much. It;s okay to have a plump guinea pig, but overfeeding can kill them. I'd give you guinea pig one handful of dry guinea pig food every day as the main food, and make sure that they have a constant supply of both hay and fresh water.
For these and other reasons, scleral contact lenses can cost significantly more than standard contacts; in fact, it is not uncommon for scleral contacts to cost three or four times more. While not typical, in cases when a complex, highly customized scleral lens is required, cost can be as high as $4,000 per eye or more.Most insurance programs do not automatically cover the full cost of scleral contact lenses. In some cases, vision insurance may reduce the cost of your lenses and/or fitting fee.n comparison, most conventional GP contact lenses are 9.0 to 9.5 mm in diameter and cover only 75 to 80 percent of the cornea. Another category of gas permeable lenses bridges the size gap between conventional GP lenses and mini-sclerals.
Many different types of contact lenses are available today. Your optometrist will be able to determine the type of lenses that would be most beneficial to you. Typical prices of contact lenses vary depending on the type of lens and the prescription required. To give you an idea of the range out there, here are some average contact lens prices taken from commercial opticals, online contact lens retailers and private doctors' offices. 1  Daily Disposables: $55-95 per box (8 boxes/annual supply)â.  Two-week Disposables: $25-$55 per box (8 boxes/annual supply)