A laser device and method for treating ophthalmic diseases is enclosed. The laser device and method for treating a variety of ophthalmic diseases comprises a system for irradiating the eye with electromagnetic irradiation with a wavelength in the range of 654-681 nm from at least one high power laser diode. The optical system of the present invention being able to focus the radiation onto a spot sized of about 100 μm. The system preferably comprises a laser source and ancillary equipment to direct and regulate the radiation. The use of this wavelength range makes the present invention effective for a wide variety of ophthalmic indications. It is capable of providing photocoagulation treatments for diseases such as glaucoma, diabetic retinopathy and age-related macular degeneration.
