To take the project beyond prototype status, they searched for a partner who would fund further development. The Hasbro toy company agreed to invest $7 million in exchange for the video game rights to the technology.

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The Control-Vision (codenamed NEMO)[1] is an unreleased video game console developed by Tom Zito. It is notable for using VHS tapes rather than ROM cartridges, prompting the creation of game content which survived on into much more advanced CD-ROM platforms.

In the plus cylinder form, the cylinder value represents the additional power required to correct astigmatism on top of the spherical power. Conversely, in the minus cylinder form, the cylinder value reflects the subtraction needed from the spherical power to correct astigmatism. Optometrists may prefer one format over the other based on their training or geographic location.

Three short trial games were finished by the middle of 1986: Scene of the Crime, a four-minute interactive mystery; Bottom of the Ninth Inning, a baseball game; and an interactive music video for the song "You Might Think" by The Cars. The next step was the interactive movie Night Trap, inspired by Scene of the Crime, and filmed in December 1986 in Pawtucket, Rhode Island, the hometown of Hasbro. In 1987, Zito created the second full-size game named Sewer Shark, in one month's filming time and at a cost of $3 million.[3]

Astigmatism, a common refractive error, is typically corrected with cylindrical lenses. These lenses have power in only one meridian and are used to correct the uneven focusing of light caused by the irregular shape of the cornea or lens in the eye. In an eyeglass prescription, astigmatism is represented by three values: sphere (Sph), cylinder (Cyl), and axis. The sphere indicates the degree of nearsightedness or farsightedness, the cylinder denotes the amount of astigmatism, and the axis defines the orientation of the astigmatism.

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It was not until the early 1990s that the CD-ROM became an affordable mass storage medium for video game consoles, enabling full-motion video (FMV) games at home. Sega was looking for content for the 1992 introduction of the Sega CD accessory for the Genesis console.[5] They contacted Zito, who created versions of Sewer Shark and Night Trap for Sega CD through his Digital Pictures company. Ports to other systems would soon follow.

Depending on the equipment used by the doctor, a prescription may be in plus or minus cylinder form. For surfacing, the optical lab uses the minus form, meaning if a prescription is written in a plus cylinder form it must be transposed before processing.

Transposing a prescription involves a few mathematical steps. First, the cylinder power is changed from plus to minus or vice versa. This change in cylinder sign necessitates an adjustment to the sphere power. Specifically, the original cylinder power is algebraically added to the sphere power. Finally, the axis is adjusted by 90 degrees to account for the change in the orientation of the cylinder power. This axis adjustment is crucial because the axis in a cylindrical lens prescription defines the meridian that is 90 degrees away from the meridian of the lens's power.

Footage of a presentation of a NEMO prototype to Hasbro executives can be found in the Sega CD version of Night Trap when entering a cheat code. Lawrence H. Bernstein, working for Milton Bradley Company at that time, plays Scene of the Crime, the prototype of Night Trap. A playable version of Scene of the Crime can be found in Night Trap: 25th Anniversary Edition.

1. Add the sphere and cylinder powers to determine the new sphere power.2. Change the sign of the cylinder.3. Change the axis by 90 degrees.

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After filming for Sewer Shark was completed, and two months prior to the 1989 release, Hasbro abandoned the project because the projected US$299 (equivalent to $730 in 2023) price was deemed uncompetitive against the well established and much cheaper Nintendo Entertainment System.[3] Zito purchased the rights to the games and stored everything in a Rhode Island warehouse. In the late 1980s, Zito hired Mark Turmell, who go on to create NBA Jam and Smash T.V., to develop two more interactive games, Citizen X, and a licensed tie-in game of Police Academy.[4]

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Transposing eyeglass prescriptions is a fundamental skill in the field of optometry and opticianry, particularly when dealing with prescriptions for astigmatism. This process involves converting a prescription written in one format to another format without changing its optical power. The need for transposition arises primarily due to the two different notations used for prescribing astigmatic corrections: the plus cylinder form and the minus cylinder form.

Originally codenamed "NEMO", initial development began in 1985 and was supported by Nolan Bushnell's company Axlon. The team, which included Apple Computer co-founder Steve Wozniak,[2] created a prototype using a modified ColecoVision console to combine interactive images with a video stream transmitted through a cable. As a storage medium, NEMO employs VHS tapes that contain computer data alongside a grid of multiple tracks of video and audio that can be toggled.[3]

It's important to transpose prescriptions accurately, as errors can lead to incorrect lens fabrication, resulting in poor visual correction and discomfort for the patient. While modern lens manufacturing and electronic prescribing have reduced the frequency of manual transpositions, understanding this process remains essential for eye care professionals. It ensures proper communication between optometrists, ophthalmologists, and opticians, and is crucial when verifying lens specifications or troubleshooting lens issues.

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Objective lenses are roughly classified basically according to the intended purpose, microscopy method, magnification, and performance (aberration correction).